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use safe FFI imports

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This avoids blocking all threads when calling waitchange_kqueue,
which blocks.
This commit is contained in:
Joey Hess 2012-07-20 15:03:24 -04:00
parent 833bd24a33
commit da4c506d61
1 changed files with 3 additions and 3 deletions
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6
Utility/Kqueue.hs
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@ -142,11 +142,11 @@ findDirContents dirmap dir = concatMap absolutecontents $ search
search = map snd $ M.toList $
M.filter (\i -> dirName i == dir) dirmap
foreign import ccall unsafe "libkqueue.h init_kqueue" c_init_kqueue
foreign import ccall safe "libkqueue.h init_kqueue" c_init_kqueue
:: IO Fd
foreign import ccall unsafe "libkqueue.h addfds_kqueue" c_addfds_kqueue
foreign import ccall safe "libkqueue.h addfds_kqueue" c_addfds_kqueue
:: Fd -> CInt -> Ptr Fd -> IO ()
foreign import ccall unsafe "libkqueue.h waitchange_kqueue" c_waitchange_kqueue
foreign import ccall safe "libkqueue.h waitchange_kqueue" c_waitchange_kqueue
:: Fd -> IO Fd
{- Initializes a Kqueue to watch a directory, and all its subdirectories. -}