diff options
| author | kr.angelov <kr.angelov@chalmers.se> | 2008-05-22 11:59:31 +0000 |
|---|---|---|
| committer | kr.angelov <kr.angelov@chalmers.se> | 2008-05-22 11:59:31 +0000 |
| commit | df0c4f81fa9c620d7c63af79c0b183a6beccf0bd (patch) | |
| tree | 0cdc80b29f8f5df0ad280f17be0ba9d46fbd948c /src-3.0/GF/System/UseSignal.hs | |
| parent | 6394f3ccfbb9d14017393b433a38a3921f1083e5 (diff) | |
remove all files that aren't used in GF-3.0
Diffstat (limited to 'src-3.0/GF/System/UseSignal.hs')
| -rw-r--r-- | src-3.0/GF/System/UseSignal.hs | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/src-3.0/GF/System/UseSignal.hs b/src-3.0/GF/System/UseSignal.hs deleted file mode 100644 index 5e6d81237..000000000 --- a/src-3.0/GF/System/UseSignal.hs +++ /dev/null @@ -1,58 +0,0 @@ ----------------------------------------------------------------------- --- | --- Module : GF.System.UseSignal --- Maintainer : Bjorn Bringert --- Stability : (stability) --- Portability : (portability) --- --- > CVS $Date: 2005/11/11 11:12:50 $ --- > CVS $Author: bringert $ --- > CVS $Revision: 1.1 $ --- --- Allows SIGINT (Ctrl-C) to interrupt computations. ------------------------------------------------------------------------------ - -module GF.System.UseSignal where - -import Control.Concurrent (myThreadId, killThread) -import Control.Exception (Exception,catch) -import Prelude hiding (catch) -import System.IO -import System.Posix.Signals - -{-# NOINLINE runInterruptibly #-} - --- | Run an IO action, and allow it to be interrupted --- by a SIGINT to the current process. Returns --- an exception if the process did not complete --- normally. --- NOTES: --- * This will replace any existing SIGINT --- handler during the action. After the computation --- has completed the existing handler will be restored. --- * If the IO action is lazy (e.g. using readFile, --- unsafeInterleaveIO etc.) the lazy computation will --- not be interruptible, as it will be performed --- after the signal handler has been removed. -runInterruptibly :: IO a -> IO (Either Exception a) -runInterruptibly a = - do t <- myThreadId - oldH <- installHandler sigINT (Catch (killThread t)) Nothing - x <- p `catch` h - installHandler sigINT oldH Nothing - return x - where p = a >>= \x -> return $! Right $! x - h e = return $ Left e - --- | Like 'runInterruptibly', but always returns (), whether --- the computation fails or not. -runInterruptibly_ :: IO () -> IO () -runInterruptibly_ = fmap (either (const ()) id) . runInterruptibly - --- | Run an action with SIGINT blocked. -blockInterrupt :: IO a -> IO a -blockInterrupt a = - do oldH <- installHandler sigINT Ignore Nothing - x <- a - installHandler sigINT oldH Nothing - return x |
