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| author |  Simon Marlow <marlowsd@gmail.com> | 2012-10-01 11:46:33 +0100 |
|---|---|---|
| committer | Simon Marlow <marlowsd@gmail.com> | 2013-01-25 20:54:39 +0000 |
| commit | af75e09945582b5e3b723f033216936121f3f65e (patch) | |
| tree | 19e46fce90c9d0edfb7b48ed0641cdd9187f2088 /System/Posix | |
| parent | 67c5131fb6c03cc4ec4a378b0f124bdeec71ed93 (diff) | |
Import waitpid() with interruptible
Diffstat (limited to 'System/Posix')
| -rw-r--r-- | System/Posix/Process/Common.hsc | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/System/Posix/Process/Common.hsc b/System/Posix/Process/Common.hsc index 5a1bed3..e11742a 100644 --- a/System/Posix/Process/Common.hsc +++ b/System/Posix/Process/Common.hsc @@ -1,4 +1,4 @@ -{-# LANGUAGE ForeignFunctionInterface #-} +{-# LANGUAGE ForeignFunctionInterface, InterruptibleFFI #-} #ifdef __GLASGOW_HASKELL__ {-# LANGUAGE Trustworthy #-} #endif @@ -313,8 +313,13 @@ getProcessStatus block stopped pid = _ -> do ps <- readWaitStatus wstatp return (Just ps) --- safe, because this call might block -foreign import ccall safe "waitpid" +#if __GLASGOW_HASKELL__ < 701 +-- not available prior to 7.1 +#define interruptible safe +#endif + +-- safe/interruptible, because this call might block +foreign import ccall interruptible "waitpid" c_waitpid :: CPid -> Ptr CInt -> CInt -> IO CPid -- | @'getGroupProcessStatus' blk stopped pgid@ calls @waitpid@, |