[GHC] #14533: Make GHC more robust against PC crashes by using atomic writes
GHC
ghc-devs at haskell.org
Mon Nov 27 18:27:56 UTC 2017
#14533: Make GHC more robust against PC crashes by using atomic writes
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Reporter: nh2 | Owner: (none)
Type: bug | Status: new
Priority: normal | Milestone:
Component: Build System | Version: 8.2.1
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
Type of failure: Compile-time | Unknown/Multiple
crash or panic | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s):
Wiki Page: |
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Comment (by svenpanne):
I'm not sure if I understand "atomic writes" here correctly, but e.g. on
POSIX systems there is not really much "atomic" regarding I/O. One of the
few things is renaming a file, but even that is not atomic depending on
the underlying file system (e.g. NFS and/or SMB IIRC). So I think the best
a compiler can do is to write its file under a fresh name next to its
destination, and rename it when it completed writing it.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14533#comment:2>
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