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<h3>
David Eichmann pushed to branch wip/io_uring
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6dcdfa25d49632267bf9b768398b7101b294fe33">6dcdfa25</a></strong>
<div>
<span>by David Eichmann</span>
<i>at 2020-06-01T15:12:47+01:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Refactor Event Manager Backend to allow for arbitrty asynchronous IO
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2aef7332df56e88c0f0555f8ca54bc945fb833f1">2aef7332</a></strong>
<div>
<span>by David Eichmann</span>
<i>at 2020-06-02T15:46:33+01:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">WIP
</pre>
</li>
</ul>
<h4>6 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#84de3af4d08259dd20075cf981cf812181d2d24f">
libraries/base/GHC/Event.hs
</a>
</li>
<li class="file-stats">
<a href="#4d05726fbbe8b9ed4afd74bfa38945903c03dd38">
libraries/base/GHC/Event/EPoll.hsc
</a>
</li>
<li class="file-stats">
<a href="#c23bed179e65cee1485463017184f320e3184b8f">
libraries/base/GHC/Event/Internal.hs
</a>
</li>
<li class="file-stats">
<a href="#1eecd86195ac019a9e8590ee2035512138a7960f">
libraries/base/GHC/Event/Manager.hs
</a>
</li>
<li class="file-stats">
<a href="#b1e1421b2cc807278e3f984921929a2ba48b4f93">
libraries/base/GHC/Event/Poll.hsc
</a>
</li>
<li class="file-stats">
<a href="#85dbb068e8c0d396ef1a7bb58f2679e3d9e65317">
libraries/base/GHC/Event/TimerManager.hs
</a>
</li>
</ul>
<h4>Changes:</h4>
<li id="84de3af4d08259dd20075cf981cf812181d2d24f">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/576e092b4a506a9b8bbc7702b03dbf80adb478fe...2aef7332df56e88c0f0555f8ca54bc945fb833f1#84de3af4d08259dd20075cf981cf812181d2d24f"><strong>libraries/base/GHC/Event.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="23" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="23" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -23,7 +23,7 @@ module GHC.Event</td>
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<pre style="margin: 0;"> <span id="LC23" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Event</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC24" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">evtRead</span></span>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">evtWrite</span></span>
</pre>
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<td class="diff-line-num new_line old" data-linenumber="26" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC26" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">IO</span>Callback</span></span>
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<td class="diff-line-num new old_line" data-linenumber="27" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Event</span>Callback</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="27" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FdKey</span><span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">keyFd</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Lifetime</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span></span>
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<td class="diff-line-num old_line" data-linenumber="29" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC29" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">registerFd</span></span>
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<br>
</li>
<li id="4d05726fbbe8b9ed4afd74bfa38945903c03dd38">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/576e092b4a506a9b8bbc7702b03dbf80adb478fe...2aef7332df56e88c0f0555f8ca54bc945fb833f1#4d05726fbbe8b9ed4afd74bfa38945903c03dd38"><strong>libraries/base/GHC/Event/EPoll.hsc</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="71" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="71" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -71,7 +71,13 @@ new :: IO E.Backend</td>
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<pre style="margin: 0;"> <span id="LC71" class="line" lang="plaintext">new = do</span>
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<pre style="margin: 0;"> <span id="LC72" class="line" lang="plaintext">  epfd <- epollCreate</span>
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<pre style="margin: 0;"> <span id="LC73" class="line" lang="plaintext">  evts <- A.new 64</span>
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<pre style="margin: 0;">-<span id="LC74" class="line" lang="plaintext">  let !be = E.backend poll modifyFd modifyFdOnce delete (EPoll epfd evts)</span>
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<pre style="margin: 0;">+<span id="LC74" class="line" lang="plaintext">  let !be = E.backend</span>
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<pre style="margin: 0;">+<span id="LC75" class="line" lang="plaintext">                poll</span>
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<pre style="margin: 0;">+<span id="LC76" class="line" lang="plaintext">                modifyFd</span>
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<pre style="margin: 0;">+<span id="LC77" class="line" lang="plaintext">                modifyFdOnce</span>
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<pre style="margin: 0;">+<span id="LC78" class="line" lang="plaintext">                (\_ _ _ -> Nothing)</span>
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<pre style="margin: 0;">+<span id="LC79" class="line" lang="plaintext">                delete</span>
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<pre style="margin: 0;">+<span id="LC80" class="line" lang="plaintext">                (EPoll epfd evts)</span>
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<pre style="margin: 0;"> <span id="LC81" class="line" lang="plaintext">  return be</span>
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<pre style="margin: 0;"> <span id="LC82" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC83" class="line" lang="plaintext">delete :: EPoll -> IO ()</span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -109,7 +115,7 @@ modifyFdOnce ep fd evt =</td>
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<pre style="margin: 0;"> <span id="LC115" class="line" lang="plaintext">-- events that are ready.</span>
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<pre style="margin: 0;"> <span id="LC116" class="line" lang="plaintext">poll :: EPoll                     -- ^ state</span>
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<pre style="margin: 0;"> <span id="LC117" class="line" lang="plaintext">     -> Maybe Timeout             -- ^ timeout in milliseconds</span>
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<pre style="margin: 0;">-<span id="LC112" class="line" lang="plaintext">     -> (<span class="idiff left right">Fd -> E.Event -> IO ())</span>  -- ^ I/O callback</span>
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<pre style="margin: 0;">+<span id="LC118" class="line" lang="plaintext">     -> (<span class="idiff left right">E.IOResult -> IO ())   </span>  -- ^ I/O callback</span>
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<pre style="margin: 0;"> <span id="LC119" class="line" lang="plaintext">     -> IO Int</span>
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<pre style="margin: 0;"> <span id="LC120" class="line" lang="plaintext">poll ep mtimeout f = do</span>
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<pre style="margin: 0;"> <span id="LC121" class="line" lang="plaintext">  let events = epollEvents ep</span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="128" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -122,7 +128,7 @@ poll ep mtimeout f = do</td>
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<pre style="margin: 0;"> <span id="LC128" class="line" lang="plaintext">    Nothing      -> epollWaitNonBlock fd es cap</span>
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<pre style="margin: 0;"> <span id="LC129" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC130" class="line" lang="plaintext">  when (n > 0) $ do</span>
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<pre style="margin: 0;">-<span id="LC125" class="line" lang="plaintext">    A.forM_ events $ \e -> f (<span class="idiff left right">eventFd e) (toEvent (eventTypes e</span>))</span>
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<pre style="margin: 0;">+<span id="LC131" class="line" lang="plaintext">    A.forM_ events $ \e -> f (<span class="idiff left right">E.IOResult_Event (eventFd e) (toEvent (eventTypes e)</span>))</span>
</pre>
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<pre style="margin: 0;"> <span id="LC132" class="line" lang="plaintext">    cap <- A.capacity events</span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="127" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC133" class="line" lang="plaintext">    when (cap == n) $ A.ensureCapacity events (2 * cap)</span>
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<td class="diff-line-num old_line" data-linenumber="128" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="134" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC134" class="line" lang="plaintext">  return n</span>
</pre>
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<br>
</li>
<li id="c23bed179e65cee1485463017184f320e3184b8f">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/576e092b4a506a9b8bbc7702b03dbf80adb478fe...2aef7332df56e88c0f0555f8ca54bc945fb833f1#c23bed179e65cee1485463017184f320e3184b8f"><strong>libraries/base/GHC/Event/Internal.hs</strong></a>
<hr>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -6,7 +6,10 @@ module GHC.Event.Internal</td>
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<pre style="margin: 0;"> <span id="LC6" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- * Event back end</span></span>
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<pre style="margin: 0;"> <span id="LC7" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">Backend</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC8" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">backend</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">IOOperation</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">IOResult</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC11" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">delete</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">doIOOperation</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC13" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">poll</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">modifyFd</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">modifyFdOnce</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="33" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="36" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -33,11 +36,23 @@ import Data.OldList (foldl', filter, intercalate, null)</td>
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Foreign.C.Error</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">eINTR</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">getErrno</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">throwErrno</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">System.Posix.Types</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Fd</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Base</span></span>
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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Event.Unique</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span><span class="p">)</span></span>
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<td class="diff-line-num old_line" data-linenumber="36" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
36
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<td class="diff-line-num new_line" data-linenumber="40" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
40
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<pre style="margin: 0;"> <span id="LC40" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Word</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Word64</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="37" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
37
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<td class="diff-line-num new_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
41
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<pre style="margin: 0;"> <span id="LC41" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Num</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Num</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="38" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
38
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<td class="diff-line-num new_line" data-linenumber="42" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
42
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<pre style="margin: 0;"> <span id="LC42" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Show</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Show</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="39" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
39
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<td class="diff-line-num new_line" data-linenumber="43" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
43
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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Semigroup.Internal</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">stimesMonoid</span><span class="p">)</span></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="40" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
40
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<td class="diff-line-num new_line" data-linenumber="44" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
44
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="45" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
45
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC45" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">IOOperation</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="46" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
46
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC46" class="line" lang="haskell">    <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IOOperation_Read</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="47" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
47
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- IOOperation_Write IOOperationID ...</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="48" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
48
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC48" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- ...</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="49" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
49
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC49" class="line" lang="haskell"></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="50" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
50
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">IOResult</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="51" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
51
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC51" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- | An event has occurred for a file handle.</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="52" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
52
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC52" class="line" lang="haskell">    <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IOResult_Event</span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="kt" style="color: #458; font-weight: 600;">Event</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="53" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
53
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC53" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- | An IOOperation has completed.</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="54" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
54
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<pre style="margin: 0;">+<span id="LC54" class="line" lang="haskell">    <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">IOResult_IOComplete</span> <span class="kt" style="color: #458; font-weight: 600;">Unique</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="55" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
55
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC55" class="line" lang="haskell"></span>
</pre>
</td>
</tr>
<tr class="line_holder" id="" style="line-height: 1.6;">
<td class="diff-line-num old_line" data-linenumber="41" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
41
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<td class="diff-line-num new_line" data-linenumber="56" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
56
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<pre style="margin: 0;"> <span id="LC56" class="line" lang="haskell"><span class="cd">-- | An I\/O event.</span></span>
</pre>
</td>
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<tr class="line_holder" id="" style="line-height: 1.6;">
<td class="diff-line-num old_line" data-linenumber="42" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
42
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<td class="diff-line-num new_line" data-linenumber="57" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
57
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="43" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
43
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<td class="diff-line-num new_line" data-linenumber="58" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
58
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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">deriving</span> <span class="kt" style="color: #458; font-weight: 600;">Eq</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ @since 4.4.0.0</span></span>
</pre>
</td>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -161,10 +176,11 @@ data Backend = forall a. Backend {</td>
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<pre style="margin: 0;"> <span id="LC176" class="line" lang="haskell"></span>
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<td class="diff-line-num old_line" data-linenumber="162" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC177" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- | Poll backend for new events.  The provided callback is called</span></span>
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<pre style="margin: 0;"> <span id="LC178" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- once per file descriptor with new events.</span></span>
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<pre style="margin: 0;">-<span id="LC164" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">_bePoll</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">a</span>                          <span class="c1" style="color: #998; font-style: italic;">-- backend state</span></span>
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<pre style="margin: 0;">-<span id="LC165" class="line" lang="haskell">              <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Timeout</span>              <span class="c1" style="color: #998; font-style: italic;">-- timeout in milliseconds ('Nothing' for non-blocking poll)</span></span>
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<pre style="margin: 0;">-<span id="LC166" class="line" lang="haskell">              <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span><span class="p">)</span>     <span class="c1" style="color: #998; font-style: italic;">-- I/O callback</span></span>
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<pre style="margin: 0;">-<span id="LC167" class="line" lang="haskell">              <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">+<span id="LC179" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">_bePoll</span></span>
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<pre style="margin: 0;">+<span id="LC180" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">a</span>                    <span class="c1" style="color: #998; font-style: italic;">-- backend state</span></span>
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<pre style="margin: 0;">+<span id="LC181" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Timeout</span>        <span class="c1" style="color: #998; font-style: italic;">-- timeout in milliseconds ('Nothing' for non-blocking poll)</span></span>
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<pre style="margin: 0;">+<span id="LC182" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IOResult</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span><span class="p">)</span>  <span class="c1" style="color: #998; font-style: italic;">-- I/O callback</span></span>
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<pre style="margin: 0;">+<span id="LC183" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span>               <span class="c1" style="color: #998; font-style: italic;">-- ???? negative is error, 0 is success but no IOResults found, positive is success with IO Results. ???</span></span>
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<pre style="margin: 0;"> <span id="LC184" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC185" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- | Register, modify, or unregister interest in the given events</span></span>
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<pre style="margin: 0;"> <span id="LC186" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- on the given file descriptor.</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -172,48 +188,64 @@ data Backend = forall a. Backend {</td>
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<pre style="margin: 0;"> <span id="LC188" class="line" lang="haskell">                  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span>       <span class="c1" style="color: #998; font-style: italic;">-- file descriptor</span></span>
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<pre style="margin: 0;"> <span id="LC189" class="line" lang="haskell">                  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span>    <span class="c1" style="color: #998; font-style: italic;">-- old events to watch for ('mempty' for new)</span></span>
</pre>
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174
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<td class="diff-line-num new_line" data-linenumber="190" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
190
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<pre style="margin: 0;"> <span id="LC190" class="line" lang="haskell">                  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span>    <span class="c1" style="color: #998; font-style: italic;">-- new events to watch for ('mempty' to delete)</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="175" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
175
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<td class="diff-line-num new_line old" data-linenumber="191" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC175" class="line" lang="haskell">                  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="191" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
191
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<pre style="margin: 0;">+<span id="LC191" class="line" lang="haskell">                  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span>  <span class="c1" style="color: #998; font-style: italic;">-- The Bool indicates True for success,</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
192
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<pre style="margin: 0;">+<span id="LC192" class="line" lang="haskell">                              <span class="c1" style="color: #998; font-style: italic;">-- False for a known failure, else this may throw</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="193" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
193
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<pre style="margin: 0;">+<span id="LC193" class="line" lang="haskell">                              <span class="c1" style="color: #998; font-style: italic;">-- with `throwErrno`.</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
176
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<td class="diff-line-num new_line" data-linenumber="194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
194
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<pre style="margin: 0;"> <span id="LC194" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="177" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
177
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<td class="diff-line-num new_line" data-linenumber="195" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
195
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<pre style="margin: 0;"> <span id="LC195" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- | Register interest in new events on a given file descriptor, set</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="178" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
178
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<td class="diff-line-num new_line" data-linenumber="196" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
196
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<pre style="margin: 0;"> <span id="LC196" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- to be deactivated after the first event.</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="179" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
179
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197
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<pre style="margin: 0;"> <span id="LC197" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">_beModifyFdOnce</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">a</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="180" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
180
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<td class="diff-line-num new_line" data-linenumber="198" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
198
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<pre style="margin: 0;"> <span id="LC198" class="line" lang="haskell">                         <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span>    <span class="c1" style="color: #998; font-style: italic;">-- file descriptor</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="181" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
181
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<td class="diff-line-num new_line" data-linenumber="199" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
199
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<pre style="margin: 0;"> <span id="LC199" class="line" lang="haskell">                         <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="c1" style="color: #998; font-style: italic;">-- new events to watch</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="182" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
182
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<td class="diff-line-num new_line old" data-linenumber="200" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC182" class="line" lang="haskell">                         <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="200" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
200
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<pre style="margin: 0;">+<span id="LC200" class="line" lang="haskell">                         <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="c1" style="color: #998; font-style: italic;">-- Bool indicates success (see _beModifyFd)</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="201" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC201" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="202" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
202
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<pre style="margin: 0;">+<span id="LC202" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- | Perform some IO action (non-blocking).</span></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="203" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
203
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<pre style="margin: 0;">+<span id="LC203" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">_beDoIOOperation</span></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
204
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<pre style="margin: 0;">+<span id="LC204" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">a</span></span>
</pre>
</td>
</tr>
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<td class="diff-line-num new old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="205" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC205" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Unique</span>            <span class="c1" style="color: #998; font-style: italic;">-- Operation id.</span></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="206" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC206" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IOOperation</span>       <span class="c1" style="color: #998; font-style: italic;">-- action to perform</span></span>
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<td class="diff-line-num new new_line" data-linenumber="207" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC207" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span>   <span class="c1" style="color: #998; font-style: italic;">-- Nothing if the io action is not supported, and</span></span>
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<td class="diff-line-num new new_line" data-linenumber="208" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC208" class="line" lang="haskell">                             <span class="c1" style="color: #998; font-style: italic;">-- the caller should use Fd Events instead. Else</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="209" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC209" class="line" lang="haskell">                             <span class="c1" style="color: #998; font-style: italic;">-- Just the action to do the (non-blocking) IO</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="210" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC210" class="line" lang="haskell">                             <span class="c1" style="color: #998; font-style: italic;">-- action. Bool indicates success (see _beModifyFd).</span></span>
</pre>
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211
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<pre style="margin: 0;"> <span id="LC211" class="line" lang="haskell"></span>
</pre>
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<pre style="margin: 0;"> <span id="LC212" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">_beDelete</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC213" class="line" lang="haskell">    <span class="p">}</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC214" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="187" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="diff-line-num new_line old" data-linenumber="215" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC187" class="line" lang="haskell"><span class="n" style="color: #333;">backend</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Timeout</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Fd</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Even</span>t</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC215" class="line" lang="haskell"><span class="n" style="color: #333;">backend</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Timeout</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">IOResul</span>t</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new_line" data-linenumber="216" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC216" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC217" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="190" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+<span id="LC218" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Unique</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IOOperation</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">))</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC219" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span><span class="p">)</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC220" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span></span>
</pre>
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221
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<pre style="margin: 0;"> <span id="LC221" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Backend</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="193" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
193
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<td class="diff-line-num new_line old" data-linenumber="222" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC193" class="line" lang="haskell"><span class="n" style="color: #333;">backend</span> <span class="n" style="color: #333;">bPoll</span> <span class="n" style="color: #333;">bModifyFd</span> <span class="n" style="color: #333;">bModifyFdOnce</span> <span class="n" style="color: #333;">bDelete</span> <span class="n" style="color: #333;">state</span> <span class="o" style="font-weight: 600;">=</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
194
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<td class="diff-line-num new_line old" data-linenumber="222" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC194" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">state</span> <span class="n" style="color: #333;">bPoll</span> <span class="n" style="color: #333;">bModifyFd</span> <span class="n" style="color: #333;">bModifyFdOnce</span> <span class="n" style="color: #333;">bDelete</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="195" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="222" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC222" class="line" lang="haskell"><span class="n" style="color: #333;">backend</span> <span class="n" style="color: #333;">bPoll</span> <span class="n" style="color: #333;">bModifyFd</span> <span class="n" style="color: #333;">bModifyFdOnce</span> <span class="n" style="color: #333;">bD<span class="idiff left">oIOOperation</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">bD</span>elete</span> <span class="n" style="color: #333;">state</span> <span class="o" style="font-weight: 600;">=</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="195" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="223" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC223" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">state</span> <span class="n" style="color: #333;">bPoll</span> <span class="n" style="color: #333;">bModifyFd</span> <span class="n" style="color: #333;">bModifyFdOnce</span> <span class="n" style="color: #333;">bD<span class="idiff left">oIOOperation</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">bD</span>elete</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="195" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
195
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<td class="diff-line-num new_line" data-linenumber="224" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
224
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<pre style="margin: 0;"> <span id="LC224" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE backend #-}</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="196" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="225" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
225
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<pre style="margin: 0;"> <span id="LC225" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
197
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<td class="diff-line-num new_line old" data-linenumber="226" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC197" class="line" lang="haskell"><span class="n" style="color: #333;">poll</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Timeout</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Fd</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Even</span>t</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="198" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="diff-line-num new_line old" data-linenumber="226" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC198" class="line" lang="haskell"><span class="n" style="color: #333;">poll</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">bState</span> <span class="n" style="color: #333;">bPoll</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bPoll</span> <span class="n" style="color: #333;">bState</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="199" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="226" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC226" class="line" lang="haskell"><span class="n" style="color: #333;">poll</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Timeout</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">IOResul</span>t</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="199" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="227" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC227" class="line" lang="haskell"><span class="n" style="color: #333;">poll</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">bState</span> <span class="n" style="color: #333;">bPoll</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="idiff left"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">_</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bPoll</span> <span class="n" style="color: #333;">bState</span></span>
</pre>
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<td class="diff-line-num new_line" data-linenumber="228" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC228" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE poll #-}</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="200" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
200
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<td class="diff-line-num new_line" data-linenumber="229" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC229" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="201" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
201
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<td class="diff-line-num new_line" data-linenumber="230" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC230" class="line" lang="haskell"><span class="cd">-- | Returns 'True' if the modification succeeded.</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="202" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
202
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<td class="diff-line-num new_line" data-linenumber="231" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC231" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Returns 'False' if this backend does not support</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="203" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="232" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC232" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- event notifications on this type of file.</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC233" class="line" lang="haskell"><span class="n" style="color: #333;">modifyFd</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
</pre>
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<td class="diff-line-num new_line old" data-linenumber="234" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC205" class="line" lang="haskell"><span class="n" style="color: #333;">modifyFd</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">bState</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">bModifyFd</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bModifyFd</span> <span class="n" style="color: #333;">bState</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC234" class="line" lang="haskell"><span class="n" style="color: #333;">modifyFd</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">bState</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">bModifyFd</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="idiff left"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">_</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bModifyFd</span> <span class="n" style="color: #333;">bState</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC235" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE modifyFd #-}</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="207" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC236" class="line" lang="haskell"></span>
</pre>
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<pre style="margin: 0;"> <span id="LC237" class="line" lang="haskell"><span class="cd">-- | Returns 'True' if the modification succeeded.</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC238" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Returns 'False' if this backend does not support</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC239" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- event notifications on this type of file.</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC240" class="line" lang="haskell"><span class="n" style="color: #333;">modifyFdOnce</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
</pre>
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<pre style="margin: 0;">-<span id="LC212" class="line" lang="haskell"><span class="n" style="color: #333;">modifyFdOnce</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">bState</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">bModifyFdOnce</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bModifyFdOnce</span> <span class="n" style="color: #333;">bState</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC241" class="line" lang="haskell"><span class="n" style="color: #333;">modifyFdOnce</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">bState</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">bModifyFdOnce</span> <span class="kr" style="font-weight: 600;">_</span><span class="idiff left"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">_</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bModifyFdOnce</span> <span class="n" style="color: #333;">bState</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC242" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE modifyFdOnce #-}</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC243" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="215" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+<span id="LC244" class="line" lang="haskell"><span class="n" style="color: #333;">doIOOperation</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Unique</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IOOperation</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC245" class="line" lang="haskell"><span class="n" style="color: #333;">doIOOperation</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">bState</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">bDoIOOperation</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bDoIOOperation</span> <span class="n" style="color: #333;">bState</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC246" class="line" lang="haskell"></span>
</pre>
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<pre style="margin: 0;"> <span id="LC247" class="line" lang="haskell"><span class="n" style="color: #333;">delete</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
</pre>
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<td class="diff-line-num new_line old" data-linenumber="248" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC216" class="line" lang="haskell"><span class="n" style="color: #333;">delete</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">bState</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">bDelete</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bDelete</span> <span class="n" style="color: #333;">bState</span></span>
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<td class="diff-line-num new old_line" data-linenumber="217" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="248" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC248" class="line" lang="haskell"><span class="n" style="color: #333;">delete</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="n" style="color: #333;">bState</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">_</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">bDelete</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bDelete</span> <span class="n" style="color: #333;">bState</span></span>
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<pre style="margin: 0;"> <span id="LC249" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE delete #-}</span></span>
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<pre style="margin: 0;"> <span id="LC250" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC251" class="line" lang="haskell"><span class="cd">-- | Throw an 'Prelude.IOError' corresponding to the current value of</span></span>
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</table>
<br>
</li>
<li id="1eecd86195ac019a9e8590ee2035512138a7960f">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/576e092b4a506a9b8bbc7702b03dbf80adb478fe...2aef7332df56e88c0f0555f8ca54bc945fb833f1#1eecd86195ac019a9e8590ee2035512138a7960f"><strong>libraries/base/GHC/Event/Manager.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="45" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="45" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -45,6 +45,7 @@ module GHC.Event.Manager</td>
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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Event</span></span>
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<pre style="margin: 0;"> <span id="LC46" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">evtRead</span></span>
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<pre style="margin: 0;"> <span id="LC47" class="line" lang="haskell">    <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">evtWrite</span></span>
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<td class="diff-line-num new old_line" data-linenumber="48" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+<span id="LC48" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">EventCallback</span></span>
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<pre style="margin: 0;"> <span id="LC49" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">IOCallback</span></span>
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<pre style="margin: 0;"> <span id="LC50" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FdKey</span><span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">keyFd</span><span class="p">)</span></span>
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<td class="diff-line-num new_line" data-linenumber="51" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC51" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FdData</span></span>
</pre>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="81" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="82" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -81,7 +82,7 @@ import GHC.Event.Control</td>
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<pre style="margin: 0;"> <span id="LC82" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Event.IntTable</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IntTable</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC83" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Event.Internal</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Event</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">evtClose</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">evtRead</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">evtWrite</span><span class="p">,</span></span>
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<td class="diff-line-num new_line" data-linenumber="84" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC84" class="line" lang="haskell">                           <span class="kt" style="color: #458; font-weight: 600;">Lifetime</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">EventLifetime</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Timeout</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC84" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Event.Unique</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">UniqueSource</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">newSource</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">newUnique</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC85" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Event.Unique</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">UniqueSource</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;"><span class="idiff left">asInt</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="nf" style="color: #900; font-weight: 600;">newSource</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">newUnique</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC86" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">System.Posix.Types</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Fd</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC87" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC88" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">GHC.Event.IntTable</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">IT</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="104" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -103,7 +104,7 @@ import qualified GHC.Event.Poll   as Poll</td>
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<pre style="margin: 0;"> <span id="LC104" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">FdData</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FdData</span> <span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC105" class="line" lang="haskell">      <span class="n" style="color: #333;">fdKey</span>       <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">FdKey</span></span>
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<pre style="margin: 0;"> <span id="LC106" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">fdEvents</span>    <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">EventLifetime</span></span>
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<pre style="margin: 0;">-<span id="LC106" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">_fdCallback</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">IO</span>Callback</span></span>
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<pre style="margin: 0;">+<span id="LC107" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">_fdCallback</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Event</span>Callback</span></span>
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<pre style="margin: 0;"> <span id="LC108" class="line" lang="haskell">    <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC109" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC110" class="line" lang="haskell"><span class="cd">-- | A file descriptor registration cookie.</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="116" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -115,7 +116,10 @@ data FdKey = FdKey {</td>
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<pre style="margin: 0;"> <span id="LC116" class="line" lang="haskell">               <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC117" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC118" class="line" lang="haskell"><span class="cd">-- | Callback invoked on I/O events.</span></span>
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<pre style="margin: 0;">-<span id="LC118" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">IOCallback</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FdKey</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">EventCallback</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FdKey</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC120" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC121" class="line" lang="haskell"><span class="cd">-- | Callback invoked on completion of I/O operations.</span></span>
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<pre style="margin: 0;">+<span id="LC122" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">IOCallback</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC123" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC124" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">State</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Created</span></span>
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<pre style="margin: 0;"> <span id="LC125" class="line" lang="haskell">           <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Running</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -130,6 +134,22 @@ data State = Created</td>
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<pre style="margin: 0;"> <span id="LC134" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span></span>
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<pre style="margin: 0;"> <span id="LC135" class="line" lang="haskell">    <span class="p">{</span> <span class="n" style="color: #333;">emBackend</span>      <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span></span>
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<pre style="margin: 0;"> <span id="LC136" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">emFds</span>          <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span> <span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Array</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MVar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IntTable</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">FdData</span><span class="p">])))</span></span>
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<pre style="margin: 0;">+<span id="LC137" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- ^ The FdData for events. Array index is the Fd hash. IntTable index</span></span>
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<pre style="margin: 0;">+<span id="LC138" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- is the Fd. To get all FdDatas for an Fd:</span></span>
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<pre style="margin: 0;">+<span id="LC139" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">+<span id="LC140" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--     lookup (fromIntegral fd) (emFds ! hashFd someFd)</span></span>
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<pre style="margin: 0;">+<span id="LC141" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">+<span id="LC142" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- The reason for the Array is to reduce contention between threads. See</span></span>
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<pre style="margin: 0;">+<span id="LC143" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- "stripping" from the ??????? paper.</span></span>
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<pre style="margin: 0;">+<span id="LC144" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">emOps</span>          <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span> <span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Array</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MVar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IntTable</span> <span class="kt" style="color: #458; font-weight: 600;">IOCallback</span><span class="p">)))</span></span>
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<pre style="margin: 0;">+<span id="LC145" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- ^ The callbackd for IO operations. Array index is the operation's</span></span>
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<pre style="margin: 0;">+<span id="LC146" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- Unique hash. IntTable index is the operations Unique. To get the call</span></span>
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<pre style="margin: 0;">+<span id="LC147" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- back for an operation:</span></span>
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<pre style="margin: 0;">+<span id="LC148" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">+<span id="LC149" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--     lookup (asInt opUnique) (emOps ! hashUnique opUnique)</span></span>
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<pre style="margin: 0;">+<span id="LC150" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">+<span id="LC151" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- The reason for the Array is to reduce contention between threads. See</span></span>
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<pre style="margin: 0;">+<span id="LC152" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- "stripping" from the ??????? paper.</span></span>
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<pre style="margin: 0;"> <span id="LC153" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">emState</span>        <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span> <span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IORef</span> <span class="kt" style="color: #458; font-weight: 600;">State</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC154" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">emUniqueSource</span> <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">UniqueSource</span></span>
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<pre style="margin: 0;"> <span id="LC155" class="line" lang="haskell">    <span class="p">,</span> <span class="n" style="color: #333;">emControl</span>      <span class="o" style="font-weight: 600;">::</span> <span class="cp" style="color: #999; font-weight: 600;">{-# UNPACK #-}</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Control</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -141,13 +161,25 @@ callbackArraySize :: Int</td>
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<pre style="margin: 0;"> <span id="LC161" class="line" lang="haskell"><span class="n" style="color: #333;">callbackArraySize</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">32</span></span>
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<pre style="margin: 0;"> <span id="LC162" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC163" class="line" lang="haskell"><span class="n" style="color: #333;">hashFd</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">-<span id="LC144" class="line" lang="haskell"><span class="n" style="color: #333;">hashFd</span> <span class="n" style="color: #333;">fd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left">fromIntegral</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fd</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">.&.</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">callbackArraySize</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-</span></span><span class="idiff"> </span><span class="mi" style="color: #099;"><span class="idiff right">1</span></span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="164" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC164" class="line" lang="haskell"><span class="n" style="color: #333;">hashFd</span> <span class="n" style="color: #333;">fd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left">hashInt</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">fromIntegral</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">fd</span></span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="145" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
145
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<td class="diff-line-num new_line" data-linenumber="165" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
165
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<pre style="margin: 0;"> <span id="LC165" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE hashFd #-}</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="146" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
146
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<td class="diff-line-num new_line" data-linenumber="166" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
166
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<pre style="margin: 0;"> <span id="LC166" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="147" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="167" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
167
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<pre style="margin: 0;">+<span id="LC167" class="line" lang="haskell"><span class="n" style="color: #333;">hashUnique</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Unique</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="147" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="168" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
168
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<pre style="margin: 0;">+<span id="LC168" class="line" lang="haskell"><span class="n" style="color: #333;">hashUnique</span> <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hashInt</span> <span class="p">(</span><span class="n" style="color: #333;">asInt</span> <span class="n" style="color: #333;">u</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="147" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="169" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
169
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<pre style="margin: 0;">+<span id="LC169" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE hashUnique #-}</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="147" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="170" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
170
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<pre style="margin: 0;">+<span id="LC170" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="147" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="171" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
171
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<pre style="margin: 0;">+<span id="LC171" class="line" lang="haskell"><span class="n" style="color: #333;">hashInt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="147" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="172" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
172
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<pre style="margin: 0;">+<span id="LC172" class="line" lang="haskell"><span class="n" style="color: #333;">hashInt</span> <span class="n" style="color: #333;">int</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">int</span> <span class="o" style="font-weight: 600;">.&.</span> <span class="p">(</span><span class="n" style="color: #333;">callbackArraySize</span> <span class="o" style="font-weight: 600;">-</span> <span class="mi" style="color: #099;">1</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="147" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="173" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC173" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE hashInt #-}</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="147" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="174" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
174
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<pre style="margin: 0;">+<span id="LC174" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="147" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
147
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<td class="diff-line-num new_line" data-linenumber="175" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
175
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<pre style="margin: 0;"> <span id="LC175" class="line" lang="haskell"><span class="n" style="color: #333;">callbackTableVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MVar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IntTable</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">FdData</span><span class="p">])</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="148" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
176
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<pre style="margin: 0;"> <span id="LC176" class="line" lang="haskell"><span class="n" style="color: #333;">callbackTableVar</span> <span class="n" style="color: #333;">mgr</span> <span class="n" style="color: #333;">fd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">emFds</span> <span class="n" style="color: #333;">mgr</span> <span class="o" style="font-weight: 600;">!</span> <span class="n" style="color: #333;">hashFd</span> <span class="n" style="color: #333;">fd</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="149" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
149
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<td class="diff-line-num new_line" data-linenumber="177" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
177
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<pre style="margin: 0;"> <span id="LC177" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE callbackTableVar #-}</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="150" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
150
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<td class="diff-line-num new_line" data-linenumber="178" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
178
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<pre style="margin: 0;"> <span id="LC178" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="151" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="179" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
179
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<pre style="margin: 0;">+<span id="LC179" class="line" lang="haskell"><span class="n" style="color: #333;">opCallbackTableVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Unique</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MVar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IntTable</span> <span class="kt" style="color: #458; font-weight: 600;">IOCallback</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="151" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="180" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
180
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<pre style="margin: 0;">+<span id="LC180" class="line" lang="haskell"><span class="n" style="color: #333;">opCallbackTableVar</span> <span class="n" style="color: #333;">mgr</span> <span class="n" style="color: #333;">unique</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">emOps</span> <span class="n" style="color: #333;">mgr</span> <span class="o" style="font-weight: 600;">!</span> <span class="n" style="color: #333;">hashUnique</span> <span class="n" style="color: #333;">unique</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="151" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+<span id="LC181" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE opCallbackTableVar #-}</span></span>
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<pre style="margin: 0;">+<span id="LC182" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC183" class="line" lang="haskell"><span class="n" style="color: #333;">haveOneShot</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;"> <span id="LC184" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE haveOneShot #-}</span></span>
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<pre style="margin: 0;"> <span id="LC185" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">defined</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HAVE_EPOLL</span><span class="p">)</span> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">defined</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HAVE_KQUEUE</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -184,8 +216,11 @@ new = newWith =<< newDefaultBackend</td>
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<pre style="margin: 0;"> <span id="LC216" class="line" lang="haskell"><span class="cd">-- | Create a new 'EventManager' with the given polling backend.</span></span>
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<pre style="margin: 0;"> <span id="LC217" class="line" lang="haskell"><span class="n" style="color: #333;">newWith</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Backend</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span></span>
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<pre style="margin: 0;"> <span id="LC218" class="line" lang="haskell"><span class="n" style="color: #333;">newWith</span> <span class="n" style="color: #333;">be</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC219" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">intTableInitSize</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">8</span></span>
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<pre style="margin: 0;"> <span id="LC220" class="line" lang="haskell">  <span class="n" style="color: #333;">iofds</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">listArray</span> <span class="p">(</span><span class="mi" style="color: #099;">0</span><span class="p">,</span> <span class="n" style="color: #333;">callbackArraySize</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">))</span> <span class="o" style="font-weight: 600;">$</span></span>
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<td class="diff-line-num new_line old" data-linenumber="221" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC188" class="line" lang="haskell">           <span class="n" style="color: #333;">replicateM</span> <span class="n" style="color: #333;">callbackArraySize</span> <span class="p">(</span><span class="n" style="color: #333;">newMVar</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="kt" style="color: #458; font-weight: 600;">IT</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">new</span> <span class="mi" style="color: #099;">8</span><span class="p">)</span></span>
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<td class="diff-line-num new old_line" data-linenumber="189" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+<span id="LC221" class="line" lang="haskell">           <span class="n" style="color: #333;">replicateM</span> <span class="n" style="color: #333;">callbackArraySize</span> <span class="p">(</span><span class="n" style="color: #333;">newMVar</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="kt" style="color: #458; font-weight: 600;">IT</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">new</span> <span class="n" style="color: #333;">intTableInitSize</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC222" class="line" lang="haskell">  <span class="n" style="color: #333;">ioops</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="n" style="color: #333;">listArray</span> <span class="p">(</span><span class="mi" style="color: #099;">0</span><span class="p">,</span> <span class="n" style="color: #333;">callbackArraySize</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">))</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC223" class="line" lang="haskell">           <span class="n" style="color: #333;">replicateM</span> <span class="n" style="color: #333;">callbackArraySize</span> <span class="p">(</span><span class="n" style="color: #333;">newMVar</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="kt" style="color: #458; font-weight: 600;">IT</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">new</span> <span class="n" style="color: #333;">intTableInitSize</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC224" class="line" lang="haskell">  <span class="n" style="color: #333;">ctrl</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newControl</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;"> <span id="LC225" class="line" lang="haskell">  <span class="n" style="color: #333;">state</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newIORef</span> <span class="kt" style="color: #458; font-weight: 600;">Created</span></span>
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<pre style="margin: 0;"> <span id="LC226" class="line" lang="haskell">  <span class="n" style="color: #333;">us</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newSource</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="232" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -197,6 +232,7 @@ newWith be = do</td>
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<pre style="margin: 0;"> <span id="LC232" class="line" lang="haskell">  <span class="n" style="color: #333;">lockVar</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newMVar</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC233" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">mgr</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="p">{</span> <span class="n" style="color: #333;">emBackend</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">be</span></span>
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<pre style="margin: 0;"> <span id="LC234" class="line" lang="haskell">                         <span class="p">,</span> <span class="n" style="color: #333;">emFds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">iofds</span></span>
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<pre style="margin: 0;">+<span id="LC235" class="line" lang="haskell">                         <span class="p">,</span> <span class="n" style="color: #333;">emOps</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ioops</span></span>
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<pre style="margin: 0;"> <span id="LC236" class="line" lang="haskell">                         <span class="p">,</span> <span class="n" style="color: #333;">emState</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">state</span></span>
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<pre style="margin: 0;"> <span id="LC237" class="line" lang="haskell">                         <span class="p">,</span> <span class="n" style="color: #333;">emUniqueSource</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">us</span></span>
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<pre style="margin: 0;"> <span id="LC238" class="line" lang="haskell">                         <span class="p">,</span> <span class="n" style="color: #333;">emControl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctrl</span></span>
</pre>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="293" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="329" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -293,12 +329,12 @@ step mgr@EventManager{..} = do</td>
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<td class="diff-line-num old_line" data-linenumber="293" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC329" class="line" lang="haskell">  <span class="n" style="color: #333;">state</span> <span class="p">`</span><span class="n" style="color: #333;">seq</span><span class="p">`</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">state</span></span>
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<pre style="margin: 0;"> <span id="LC330" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num old_line" data-linenumber="295" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC331" class="line" lang="haskell">    <span class="n" style="color: #333;">waitForIO</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="296" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="diff-line-num new_line old" data-linenumber="332" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC296" class="line" lang="haskell">      <span class="n" style="color: #333;">n1</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">poll</span> <span class="n" style="color: #333;">emBackend</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="p">(</span><span class="n" style="color: #333;">on<span class="idiff left right">FdEven</span>t</span> <span class="n" style="color: #333;">mgr</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="297" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+<span id="LC332" class="line" lang="haskell">      <span class="n" style="color: #333;">n1</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">poll</span> <span class="n" style="color: #333;">emBackend</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="p">(</span><span class="n" style="color: #333;">on<span class="idiff left right">IOResul</span>t</span> <span class="n" style="color: #333;">mgr</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="297" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC333" class="line" lang="haskell">      <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">n1</span> <span class="o" style="font-weight: 600;"><=</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="298" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC334" class="line" lang="haskell">        <span class="n" style="color: #333;">yield</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="299" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="diff-line-num new_line old" data-linenumber="335" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC299" class="line" lang="haskell">        <span class="n" style="color: #333;">n2</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">poll</span> <span class="n" style="color: #333;">emBackend</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="p">(</span><span class="n" style="color: #333;">on<span class="idiff left right">FdEven</span>t</span> <span class="n" style="color: #333;">mgr</span><span class="p">)</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC335" class="line" lang="haskell">        <span class="n" style="color: #333;">n2</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">poll</span> <span class="n" style="color: #333;">emBackend</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="p">(</span><span class="n" style="color: #333;">on<span class="idiff left right">IOResul</span>t</span> <span class="n" style="color: #333;">mgr</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC336" class="line" lang="haskell">        <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">n2</span> <span class="o" style="font-weight: 600;"><=</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC301" class="line" lang="haskell">          <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">poll</span> <span class="n" style="color: #333;">emBackend</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="kt" style="color: #458; font-weight: 600;">Forever</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">on<span class="idiff left right">FdEven</span>t</span> <span class="n" style="color: #333;">mgr</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC337" class="line" lang="haskell">          <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">poll</span> <span class="n" style="color: #333;">emBackend</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="kt" style="color: #458; font-weight: 600;">Forever</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">on<span class="idiff left right">IOResul</span>t</span> <span class="n" style="color: #333;">mgr</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC338" class="line" lang="haskell">          <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC339" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC340" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">------------------------------------------------------------------------</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -312,7 +348,7 @@ step mgr@EventManager{..} = do</td>
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<pre style="margin: 0;"> <span id="LC348" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- platform's @select@ or @epoll@ system call, which tend to vary in</span></span>
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<pre style="margin: 0;"> <span id="LC349" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- what sort of fds are permitted. For instance, waiting on regular files</span></span>
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<pre style="margin: 0;"> <span id="LC350" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- is not allowed on many platforms.</span></span>
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<pre style="margin: 0;">-<span id="LC315" class="line" lang="haskell"><span class="n" style="color: #333;">registerFd_</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">IO</span>Callback</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Lifetime</span></span>
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<pre style="margin: 0;">+<span id="LC351" class="line" lang="haskell"><span class="n" style="color: #333;">registerFd_</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Event</span>Callback</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Lifetime</span></span>
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<pre style="margin: 0;"> <span id="LC352" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FdKey</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC353" class="line" lang="haskell"><span class="n" style="color: #333;">registerFd_</span> <span class="n" style="color: #333;">mgr</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EventManager</span><span class="p">{</span><span class="o" style="font-weight: 600;">..</span><span class="p">})</span> <span class="n" style="color: #333;">cb</span> <span class="n" style="color: #333;">fd</span> <span class="n" style="color: #333;">evs</span> <span class="n" style="color: #333;">lt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;"> <span id="LC354" class="line" lang="haskell">  <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newUnique</span> <span class="n" style="color: #333;">emUniqueSource</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -356,13 +392,62 @@ registerFd_ mgr@(EventManager{..}) cb fd evs lt = do</td>
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<pre style="margin: 0;"> <span id="LC392" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- on the file descriptor @fd@ for lifetime @lt@. @cb@ is called for</span></span>
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<pre style="margin: 0;"> <span id="LC393" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- each event that occurs.  Returns a cookie that can be handed to</span></span>
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<pre style="margin: 0;"> <span id="LC394" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'unregisterFd'.</span></span>
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<pre style="margin: 0;">-<span id="LC359" class="line" lang="haskell"><span class="n" style="color: #333;">registerFd</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">IO</span>Callback</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Lifetime</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">FdKey</span></span>
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<pre style="margin: 0;">+<span id="LC395" class="line" lang="haskell"><span class="n" style="color: #333;">registerFd</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Event</span>Callback</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Lifetime</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">FdKey</span></span>
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<pre style="margin: 0;"> <span id="LC396" class="line" lang="haskell"><span class="n" style="color: #333;">registerFd</span> <span class="n" style="color: #333;">mgr</span> <span class="n" style="color: #333;">cb</span> <span class="n" style="color: #333;">fd</span> <span class="n" style="color: #333;">evs</span> <span class="n" style="color: #333;">lt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;"> <span id="LC397" class="line" lang="haskell">  <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span> <span class="n" style="color: #333;">wake</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">registerFd_</span> <span class="n" style="color: #333;">mgr</span> <span class="n" style="color: #333;">cb</span> <span class="n" style="color: #333;">fd</span> <span class="n" style="color: #333;">evs</span> <span class="n" style="color: #333;">lt</span></span>
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<pre style="margin: 0;"> <span id="LC398" class="line" lang="haskell">  <span class="n" style="color: #333;">when</span> <span class="n" style="color: #333;">wake</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">wakeManager</span> <span class="n" style="color: #333;">mgr</span></span>
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<pre style="margin: 0;"> <span id="LC399" class="line" lang="haskell">  <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">r</span></span>
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<pre style="margin: 0;"> <span id="LC400" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE registerFd #-}</span></span>
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<pre style="margin: 0;"> <span id="LC401" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC402" class="line" lang="haskell"><span class="cd">-- | @registerOp mgr cb op@ registers the IO operation @op@. This returns</span></span>
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<pre style="margin: 0;">+<span id="LC403" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- immediately and the operation is done asynchronously. @cb@ is called when the</span></span>
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<pre style="margin: 0;">+<span id="LC404" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- operation completes.</span></span>
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<pre style="margin: 0;">+<span id="LC405" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">+<span id="LC406" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO</span></span>
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<pre style="margin: 0;">+<span id="LC407" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--  * what if the operation fails?</span></span>
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<td class="diff-line-num new new_line" data-linenumber="408" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
408
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<pre style="margin: 0;">+<span id="LC408" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--  * Should we support cancellation (return some cookie as `registerFd` does)?</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="409" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
409
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<pre style="margin: 0;">+<span id="LC409" class="line" lang="haskell"><span class="n" style="color: #333;">registerOp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IOCallback</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IOOperation</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="410" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
410
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<pre style="margin: 0;">+<span id="LC410" class="line" lang="haskell"><span class="n" style="color: #333;">registerOp</span> <span class="n" style="color: #333;">mgr</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EventManager</span><span class="p">{</span><span class="o" style="font-weight: 600;">..</span><span class="p">})</span> <span class="n" style="color: #333;">cb</span> <span class="n" style="color: #333;">op</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="411" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
411
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<pre style="margin: 0;">+<span id="LC411" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- registerFd_ mgr cb fd evs lt</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="412" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
412
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<pre style="margin: 0;">+<span id="LC412" class="line" lang="haskell">  <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newUnique</span> <span class="n" style="color: #333;">emUniqueSource</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
413
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<pre style="margin: 0;">+<span id="LC413" class="line" lang="haskell">  <span class="n" style="color: #333;">ok</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">withMVar</span> <span class="p">(</span><span class="n" style="color: #333;">opCallbackTableVar</span> <span class="n" style="color: #333;">mgr</span> <span class="n" style="color: #333;">u</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">tbl</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="414" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
414
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<pre style="margin: 0;">+<span id="LC414" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="415" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
415
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<pre style="margin: 0;">+<span id="LC415" class="line" lang="haskell">    <span class="n" style="color: #333;">ok</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kr" style="font-weight: 600;">case</span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">doIOOperation</span> <span class="n" style="color: #333;">emBackend</span> <span class="n" style="color: #333;">u</span> <span class="n" style="color: #333;">op</span> <span class="kr" style="font-weight: 600;">of</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="416" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
416
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<pre style="margin: 0;">+<span id="LC416" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">defaultRegisterOp_</span> <span class="n" style="color: #333;">mgr</span> <span class="n" style="color: #333;">cb</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">u</span> <span class="n" style="color: #333;">tbl</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="417" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
417
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<pre style="margin: 0;">+<span id="LC417" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">register</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">register</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="418" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
418
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<pre style="margin: 0;">+<span id="LC418" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="419" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
419
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<pre style="margin: 0;">+<span id="LC419" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">ok</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="420" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
420
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<pre style="margin: 0;">+<span id="LC420" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">then</span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="421" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
421
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<pre style="margin: 0;">+<span id="LC421" class="line" lang="haskell">        <span class="n" style="color: #333;">_nothing</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">IT</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insertWith</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="422" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
422
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<pre style="margin: 0;">+<span id="LC422" class="line" lang="haskell">          <span class="p">(</span><span class="n" style="color: #333;">error</span> <span class="s" style="color: #d14;">"Impossible! IO Operation Unique already exists"</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="423" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
423
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<pre style="margin: 0;">+<span id="LC423" class="line" lang="haskell">          <span class="p">(</span><span class="n" style="color: #333;">asInt</span> <span class="n" style="color: #333;">u</span><span class="p">)</span> <span class="n" style="color: #333;">cb</span> <span class="n" style="color: #333;">tbl</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="424" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
424
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<pre style="margin: 0;">+<span id="LC424" class="line" lang="haskell">        <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
</pre>
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425
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<pre style="margin: 0;">+<span id="LC425" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
</pre>
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426
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<pre style="margin: 0;">+<span id="LC426" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="427" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
427
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<pre style="margin: 0;">+<span id="LC427" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">ok</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="428" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
428
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<pre style="margin: 0;">+<span id="LC428" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- We've added an operation and need to wake the manager to check if the</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="429" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
429
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<pre style="margin: 0;">+<span id="LC429" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- operation is completed</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="430" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
430
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<pre style="margin: 0;">+<span id="LC430" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">wakeManager</span> <span class="n" style="color: #333;">mgr</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="431" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
431
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<pre style="margin: 0;">+<span id="LC431" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Adding the operation failed. As with `registerFd`, we immediately call</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="432" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
432
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<pre style="margin: 0;">+<span id="LC432" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- the callback.</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="433" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
433
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<pre style="margin: 0;">+<span id="LC433" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">cb</span></span>
</pre>
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434
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<pre style="margin: 0;">+<span id="LC434" class="line" lang="haskell">  <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="435" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
435
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<pre style="margin: 0;">+<span id="LC435" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE registerOp #-}</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="436" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
436
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<pre style="margin: 0;">+<span id="LC436" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="437" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
437
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<pre style="margin: 0;">+<span id="LC437" class="line" lang="haskell"><span class="cd">-- | Provides a default implementation for registering an operation implemented</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="438" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
438
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<pre style="margin: 0;">+<span id="LC438" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- in terms of Events. It is assumed that the caller has obtained the</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="439" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
439
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<pre style="margin: 0;">+<span id="LC439" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- `opCallbackTableVar` MVar.</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="440" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
440
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<pre style="margin: 0;">+<span id="LC440" class="line" lang="haskell"><span class="n" style="color: #333;">defaultRegisterOp_</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="441" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
441
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<pre style="margin: 0;">+<span id="LC441" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="442" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
442
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<pre style="margin: 0;">+<span id="LC442" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IOCallback</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="443" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
443
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<pre style="margin: 0;">+<span id="LC443" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IOOperation</span></span>
</pre>
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444
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<pre style="margin: 0;">+<span id="LC444" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Unique</span></span>
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<pre style="margin: 0;">+<span id="LC445" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IntTable</span> <span class="kt" style="color: #458; font-weight: 600;">IOCallback</span></span>
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<pre style="margin: 0;">+<span id="LC446" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">+<span id="LC447" class="line" lang="haskell"><span class="n" style="color: #333;">defaultRegisterOp_</span> <span class="n" style="color: #333;">mgr</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EventManager</span><span class="p">{</span><span class="o" style="font-weight: 600;">..</span><span class="p">})</span> <span class="n" style="color: #333;">cb</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">u</span> <span class="n" style="color: #333;">tbl</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">op</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC448" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">IOOperation_Read</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">_</span></span>
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<pre style="margin: 0;">+<span id="LC449" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE defaultRegisterOp_ #-}</span></span>
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<pre style="margin: 0;">+<span id="LC450" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC451" class="line" lang="haskell"><span class="cd">-- | Wake up the event manager.</span></span>
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<pre style="margin: 0;"> <span id="LC452" class="line" lang="haskell"><span class="n" style="color: #333;">wakeManager</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC453" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">defined</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HAVE_EPOLL</span><span class="p">)</span> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">defined</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HAVE_KQUEUE</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -444,6 +529,17 @@ closeFd_ mgr tbl fd = do</td>
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<pre style="margin: 0;"> <span id="LC529" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;"> <span id="LC530" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Utilities</span></span>
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<pre style="margin: 0;"> <span id="LC531" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC532" class="line" lang="haskell"><span class="cd">-- | Call the callbacks corresponding ot the given IOResult.</span></span>
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<pre style="margin: 0;">+<span id="LC533" class="line" lang="haskell"><span class="n" style="color: #333;">onIOResult</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IOResult</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC534" class="line" lang="haskell"><span class="n" style="color: #333;">onIOResult</span> <span class="n" style="color: #333;">em</span> <span class="n" style="color: #333;">ioResult</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">ioResult</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC535" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IOResult_Event</span> <span class="n" style="color: #333;">fd</span> <span class="n" style="color: #333;">events</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">onFdEvent</span> <span class="n" style="color: #333;">em</span> <span class="n" style="color: #333;">fd</span> <span class="n" style="color: #333;">events</span></span>
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<td class="diff-line-num new new_line" data-linenumber="536" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
536
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<pre style="margin: 0;">+<span id="LC536" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IOResult_IOComplete</span> <span class="n" style="color: #333;">unique</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="537" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
537
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<pre style="margin: 0;">+<span id="LC537" class="line" lang="haskell">    <span class="n" style="color: #333;">withMVar</span> <span class="p">(</span><span class="n" style="color: #333;">opCallbackTableVar</span> <span class="n" style="color: #333;">em</span> <span class="n" style="color: #333;">unique</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">tbl</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="447" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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538
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<pre style="margin: 0;">+<span id="LC538" class="line" lang="haskell">      <span class="n" style="color: #333;">callbackMay</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">IT</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">delete</span> <span class="p">(</span><span class="n" style="color: #333;">asInt</span> <span class="n" style="color: #333;">unique</span><span class="p">)</span> <span class="n" style="color: #333;">tbl</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="539" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
539
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<pre style="margin: 0;">+<span id="LC539" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">callbackMay</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<td class="diff-line-num new new_line" data-linenumber="540" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
540
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<pre style="margin: 0;">+<span id="LC540" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<td class="diff-line-num new new_line" data-linenumber="541" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
541
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<pre style="margin: 0;">+<span id="LC541" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">callback</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">callback</span></span>
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542
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<pre style="margin: 0;">+<span id="LC542" class="line" lang="haskell"></span>
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447
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543
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<pre style="margin: 0;"> <span id="LC543" class="line" lang="haskell"><span class="cd">-- | Call the callbacks corresponding to the given file descriptor.</span></span>
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448
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<pre style="margin: 0;"> <span id="LC544" class="line" lang="haskell"><span class="n" style="color: #333;">onFdEvent</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EventManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Fd</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Event</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
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449
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<pre style="margin: 0;"> <span id="LC545" class="line" lang="haskell"><span class="n" style="color: #333;">onFdEvent</span> <span class="n" style="color: #333;">mgr</span> <span class="n" style="color: #333;">fd</span> <span class="n" style="color: #333;">evs</span></span>
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<br>
</li>
<li id="b1e1421b2cc807278e3f984921929a2ba48b4f93">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/576e092b4a506a9b8bbc7702b03dbf80adb478fe...2aef7332df56e88c0f0555f8ca54bc945fb833f1#b1e1421b2cc807278e3f984921929a2ba48b4f93"><strong>libraries/base/GHC/Event/Poll.hsc</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -51,7 +51,7 @@ data Poll = Poll {</td>
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51
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<pre style="margin: 0;"> <span id="LC51" class="line" lang="plaintext">    }</span>
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<pre style="margin: 0;"> <span id="LC52" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC53" class="line" lang="plaintext">new :: IO E.Backend</span>
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<td class="diff-line-num new_line old" data-linenumber="54" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC54" class="line" lang="plaintext">new = E.backend poll modifyFd modifyFdOnce (\_ -> return ()) `liftM`</span>
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<pre style="margin: 0;">+<span id="LC54" class="line" lang="plaintext">new = E.backend poll modifyFd modifyFdOnce (\_ <span class="idiff left right">_ _ -> Nothing) (\_ </span>-> return ()) `liftM`</span>
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<pre style="margin: 0;"> <span id="LC55" class="line" lang="plaintext">      liftM2 Poll (newMVar =<< A.empty) A.empty</span>
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<pre style="margin: 0;"> <span id="LC56" class="line" lang="plaintext"></span>
</pre>
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="plaintext">modifyFd :: Poll -> Fd -> E.Event -> E.Event -> IO Bool</span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="78" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -78,7 +78,7 @@ reworkFd p (PollFd fd npevt opevt) = do</td>
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<pre style="margin: 0;"> <span id="LC78" class="line" lang="plaintext"></span>
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<td class="diff-line-num old_line" data-linenumber="79" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC79" class="line" lang="plaintext">poll :: Poll</span>
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<pre style="margin: 0;"> <span id="LC80" class="line" lang="plaintext">     -> Maybe E.Timeout</span>
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<pre style="margin: 0;">-<span id="LC81" class="line" lang="plaintext">     -> (<span class="idiff left right">Fd -> E.Even</span>t -> IO ())</span>
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<pre style="margin: 0;">+<span id="LC81" class="line" lang="plaintext">     -> (<span class="idiff left right">E.IOResul</span>t -> IO ())</span>
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<pre style="margin: 0;"> <span id="LC82" class="line" lang="plaintext">     -> IO Int</span>
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<pre style="margin: 0;"> <span id="LC83" class="line" lang="plaintext">poll p mtout f = do</span>
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<td class="diff-line-num old_line" data-linenumber="84" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC84" class="line" lang="plaintext">  let a = pollFd p</span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="95" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="95" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -95,7 +95,7 @@ poll p mtout f = do</td>
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<pre style="margin: 0;"> <span id="LC95" class="line" lang="plaintext">    A.loop a 0 $ \i e -> do</span>
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<pre style="margin: 0;"> <span id="LC96" class="line" lang="plaintext">      let r = pfdRevents e</span>
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<pre style="margin: 0;"> <span id="LC97" class="line" lang="plaintext">      if r /= 0</span>
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<pre style="margin: 0;">-<span id="LC98" class="line" lang="plaintext">        then do f (<span class="idiff left right">pfdFd e) (toEvent r</span>)</span>
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<pre style="margin: 0;">+<span id="LC98" class="line" lang="plaintext">        then do f (<span class="idiff left right">E.IOResult_Event (pfdFd e) (toEvent r)</span>)</span>
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<pre style="margin: 0;"> <span id="LC99" class="line" lang="plaintext">                let i' = i + 1</span>
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<pre style="margin: 0;"> <span id="LC100" class="line" lang="plaintext">                return (i', i' == n)</span>
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<pre style="margin: 0;"> <span id="LC101" class="line" lang="plaintext">        else return (i, True)</span>
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<br>
</li>
<li id="85dbb068e8c0d396ef1a7bb58f2679e3d9e65317">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/576e092b4a506a9b8bbc7702b03dbf80adb478fe...2aef7332df56e88c0f0555f8ca54bc945fb833f1#85dbb068e8c0d396ef1a7bb58f2679e3d9e65317"><strong>libraries/base/GHC/Event/TimerManager.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -50,9 +50,8 @@ import GHC.Num (Num(..))</td>
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<pre style="margin: 0;"> <span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Real</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">quot</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">fromIntegral</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC51" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Show</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Show</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC52" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Event.Control</span></span>
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<pre style="margin: 0;">-<span id="LC53" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Event.Internal</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Event</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="nf" style="color: #900; font-weight: 600;">evtRead</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Timeout</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC53" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Event.Internal</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Backend</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">evtRead</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Timeout</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC54" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Event.Unique</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">UniqueSource</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">newSource</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">newUnique</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC55" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">System.Posix.Types</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Fd</span><span class="p">)</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC55" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC56" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">GHC.Event.Internal</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">I</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">GHC.Event.PSQ</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">Q</span></span>
</pre>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="99" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -99,13 +98,15 @@ data TimerManager = TimerManager</td>
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<pre style="margin: 0;"> <span id="LC98" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;"> <span id="LC99" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Creation</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC100" class="line" lang="haskell"></span>
</pre>
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<pre style="margin: 0;">-<span id="LC102" class="line" lang="haskell"><span class="n" style="color: #333;">handleControlEvent</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TimerManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Fd</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Even</span>t</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
</pre>
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<pre style="margin: 0;">-<span id="LC103" class="line" lang="haskell"><span class="n" style="color: #333;">handleControlEvent</span> <span class="n" style="color: #333;">mgr</span> <span class="n" style="color: #333;"><span class="idiff left">fd</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">_evt</span></span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC101" class="line" lang="haskell"><span class="n" style="color: #333;">handleControlEvent</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TimerManager</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">I</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">IOResul</span>t</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC102" class="line" lang="haskell"><span class="n" style="color: #333;">handleControlEvent</span> <span class="n" style="color: #333;">mgr</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">I</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">IOResult_Event</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fd</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">_evt</span></span><span class="p"><span class="idiff right">)</span></span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<td class="diff-line-num old_line" data-linenumber="104" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
104
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103
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<pre style="margin: 0;"> <span id="LC103" class="line" lang="haskell">  <span class="n" style="color: #333;">msg</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">readControlMessage</span> <span class="p">(</span><span class="n" style="color: #333;">emControl</span> <span class="n" style="color: #333;">mgr</span><span class="p">)</span> <span class="n" style="color: #333;">fd</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="105" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
105
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<td class="diff-line-num new_line" data-linenumber="104" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
104
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<pre style="margin: 0;"> <span id="LC104" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">msg</span> <span class="kr" style="font-weight: 600;">of</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="106" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
106
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105
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<pre style="margin: 0;"> <span id="LC105" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">CMsgWakeup</span>      <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="107" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
107
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<td class="diff-line-num new_line" data-linenumber="106" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
106
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<pre style="margin: 0;"> <span id="LC106" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">CMsgDie</span>         <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">writeIORef</span> <span class="p">(</span><span class="n" style="color: #333;">emState</span> <span class="n" style="color: #333;">mgr</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">Finished</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="108" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
108
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107
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<pre style="margin: 0;"> <span id="LC107" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">CMsgSignal</span> <span class="n" style="color: #333;">fp</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">runHandlers</span> <span class="n" style="color: #333;">fp</span> <span class="n" style="color: #333;">s</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="109" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="108" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC108" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TimerManager should only use the event api of the backend to wait on timers.</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="109" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
109
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<pre style="margin: 0;">+<span id="LC109" class="line" lang="haskell"><span class="n" style="color: #333;">handleControlEvent</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">errorWithoutStackTrace</span> <span class="s" style="color: #d14;">"unexpected non-event IO result"</span></span>
</pre>
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109
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<td class="diff-line-num new_line" data-linenumber="110" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
110
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<pre style="margin: 0;"> <span id="LC110" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="110" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
110
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<td class="diff-line-num new_line" data-linenumber="111" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
111
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<pre style="margin: 0;"> <span id="LC111" class="line" lang="haskell"><span class="n" style="color: #333;">newDefaultBackend</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Backend</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="111" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
111
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<td class="diff-line-num new_line" data-linenumber="112" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
112
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<pre style="margin: 0;"> <span id="LC112" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">defined</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HAVE_POLL</span><span class="p">)</span></span>
</pre>
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