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launcher: When terminated, ensure child processes are cleaned up
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-- | | ||
-- Copyright: © 2018-2019 IOHK | ||
-- License: MIT | ||
-- Portability: POSIX | ||
-- | ||
|
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module Cardano.Launcher.POSIX | ||
( installSignalHandlers | ||
) where | ||
|
||
import Prelude | ||
|
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import Control.Monad | ||
( void ) | ||
import Say | ||
( sayErr ) | ||
import System.Posix.Signals | ||
( Handler (..) | ||
, installHandler | ||
, keyboardSignal | ||
, raiseSignal | ||
, softwareTermination | ||
) | ||
|
||
-- | Convert any SIGTERM received to SIGINT, for which the runtime system has | ||
-- handlers that will correctly clean up sub-processes. | ||
installSignalHandlers :: IO () | ||
installSignalHandlers = void $ | ||
installHandler softwareTermination termHandler Nothing | ||
where | ||
termHandler = CatchOnce $ do | ||
sayErr "Terminated by signal." | ||
raiseSignal keyboardSignal |
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-- | | ||
-- Copyright: © 2018-2019 IOHK | ||
-- License: MIT | ||
-- Portability: Windows | ||
-- | ||
|
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module Cardano.Launcher.Windows | ||
( installSignalHandlers | ||
) where | ||
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import Prelude | ||
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-- | Stub function for windows. | ||
installSignalHandlers :: IO () | ||
installSignalHandlers = pure () |
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