Waiting on Sockets or File Descriptors
wolfgang.thaller at gmx.net
Thu Feb 3 23:40:37 EST 2005
> If I understood this right, then I can use forkIO to run a
> "safe" FFI function which blocks, but in the threaded RTS
> this will not block all other FFI calls.
> So what happens in the non-threaded RTS? Now the blocking
> yet "safe" FFI invocation _would_ block other FFI calls but
> not evaluation of "pure Haskell" code. Is that right?
No. All execution of Haskell code is blocked, as there is really only
one operating system thread in the whole system.
More information about the Glasgow-haskell-users