git-repair (1.20131122) unstable; urgency=low

  * Added test mode, which can be used to randomly corrupt test
    repositories, in reproducible ways, which allows easy
    corruption-driven-development.
  * Improve repair code in the case where the index file is corrupt,
    and this hides other problems.
  * Write a dummy .git/HEAD if the file is missing or corrupt, as
    git otherwise will not treat the repository as a git repo.
  * Improve fsck code to find badly corrupted objects that crash git fsck
    before it can complain about them.
  * Fixed crashes on bad file encodings.
  * Can now run 10000 tests (git-repair --test -n 10000 --force)
    with 0 failures.

# imported from the archive

1 files changed, 69 insertions, 0 deletions

diff --git a/Utility/ThreadScheduler.hs b/Utility/ThreadScheduler.hs
new file mode 100644
index 0000000..c3e871c
--- /dev/null
+++ b/Utility/ThreadScheduler.hs
@@ -0,0 +1,69 @@
+{- thread scheduling
+ -
+ - Copyright 2012, 2013 Joey Hess <joey@kitenet.net>
+ - Copyright 2011 Bas van Dijk & Roel van Dijk
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+{-# LANGUAGE CPP #-}
+
+module Utility.ThreadScheduler where
+
+import Common
+
+import Control.Concurrent
+#ifndef mingw32_HOST_OS
+import System.Posix.Signals
+#ifndef __ANDROID__
+import System.Posix.Terminal
+#endif
+#endif
+
+newtype Seconds = Seconds { fromSeconds :: Int }
+	deriving (Eq, Ord, Show)
+
+type Microseconds = Integer
+
+{- Runs an action repeatedly forever, sleeping at least the specified number
+ - of seconds in between. -}
+runEvery :: Seconds -> IO a -> IO a
+runEvery n a = forever $ do
+	threadDelaySeconds n
+	a
+
+threadDelaySeconds :: Seconds -> IO ()
+threadDelaySeconds (Seconds n) = unboundDelay (fromIntegral n * oneSecond)
+
+{- Like threadDelay, but not bounded by an Int.
+ -
+ - There is no guarantee that the thread will be rescheduled promptly when the
+ - delay has expired, but the thread will never continue to run earlier than
+ - specified.
+ - 
+ - Taken from the unbounded-delay package to avoid a dependency for 4 lines
+ - of code.
+ -}
+unboundDelay :: Microseconds -> IO ()
+unboundDelay time = do
+	let maxWait = min time $ toInteger (maxBound :: Int)
+	threadDelay $ fromInteger maxWait
+	when (maxWait /= time) $ unboundDelay (time - maxWait)
+
+{- Pauses the main thread, letting children run until program termination. -}
+waitForTermination :: IO ()
+waitForTermination = do
+	lock <- newEmptyMVar
+#ifndef mingw32_HOST_OS
+	let check sig = void $
+		installHandler sig (CatchOnce $ putMVar lock ()) Nothing
+	check softwareTermination
+#ifndef __ANDROID__
+	whenM (queryTerminal stdInput) $
+		check keyboardSignal
+#endif
+#endif
+	takeMVar lock
+
+oneSecond :: Microseconds
+oneSecond = 1000000