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| author |  Joey Hess <joeyh@joeyh.name> | 2016-12-27 16:26:26 -0400 |
|---|---|---|
| committer | Joey Hess <joeyh@joeyh.name> | 2016-12-27 16:26:26 -0400 |
| commit | 60aca47a1a87e50a779a39115c142c5acbc0207d (patch) | |
| tree | 333c902000a156bfd934334060c394f0f5cffeb2 /Utility/MagicWormhole.hs | |
| parent | fc5323ce2b17e86feefec668edc811d4ecbab726 (diff) | |
avoid leaving MVar empty
Something might want to observe the code multiple times.
Diffstat (limited to 'Utility/MagicWormhole.hs')
| -rw-r--r-- | Utility/MagicWormhole.hs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Utility/MagicWormhole.hs b/Utility/MagicWormhole.hs index e217dcdca..3743f352c 100644 --- a/Utility/MagicWormhole.hs +++ b/Utility/MagicWormhole.hs @@ -78,7 +78,7 @@ mkCodeProducer :: IO CodeProducer mkCodeProducer = CodeProducer <$> newEmptyMVar waitCode :: CodeObserver -> IO Code -waitCode (CodeObserver o) = takeMVar o +waitCode (CodeObserver o) = readMVar o sendCode :: CodeProducer -> Code -> IO () sendCode (CodeProducer p) = putMVar p @@ -119,7 +119,7 @@ sendFile f (CodeObserver observer) ps = do -- read from the CodeProducer, and fed to wormhole on stdin. receiveFile :: FilePath -> CodeProducer -> WormHoleParams -> IO Bool receiveFile f (CodeProducer producer) ps = runWormHoleProcess p $ \hin _hout -> do - Code c <- takeMVar producer + Code c <- readMVar producer hPutStrLn hin c hFlush hin return True |