module Panic
(
GhcException(..), ghcError, progName,
+ pgmError,
panic, panic#, assertPanic, trace,
showException, showGhcException, tryMost,
- installSignalHandlers,
+ installSignalHandlers,
catchJust, tryJust, ioErrors, throwTo,
) where
#include "HsVersions.h"
-#include "config.h"
import Config
import FastTypes
# else
import Posix ( Handler(Catch), installHandler, sigINT, sigQUIT )
# endif /* GHC > 504 */
-
-import CONCURRENT ( myThreadId )
#endif /* mingw32_HOST_OS */
+#if defined(mingw32_HOST_OS) && __GLASGOW_HASKELL__ >= 603
+import GHC.ConsoleHandler
+#endif
+
# if __GLASGOW_HASKELL__ < 500
import EXCEPTION ( raiseInThread )
# else
import EXCEPTION ( catchJust, tryJust, ioErrors )
#endif
+import CONCURRENT ( myThreadId )
import DYNAMIC
import qualified EXCEPTION as Exception
import TRACE ( trace )
Panics and asserts.
\begin{code}
-panic :: String -> a
-panic x = Exception.throwDyn (Panic x)
+panic, pgmError :: String -> a
+panic x = Exception.throwDyn (Panic x)
+pgmError x = Exception.throwDyn (ProgramError x)
-- #-versions because panic can't return an unboxed int, and that's
-- what TAG_ is with GHC at the moment. Ugh. (Simon)
\begin{code}
installSignalHandlers :: IO ()
installSignalHandlers = do
-#ifndef mingw32_HOST_OS
main_thread <- myThreadId
- let sig_handler = Catch (throwTo main_thread
- (Exception.DynException (toDyn Interrupted)))
- installHandler sigQUIT sig_handler Nothing
- installHandler sigINT sig_handler Nothing
-#endif
+ let
+ interrupt_exn = Exception.DynException (toDyn Interrupted)
+ interrupt = throwTo main_thread interrupt_exn
+ --
+#if !defined(mingw32_HOST_OS)
+ installHandler sigQUIT (Catch interrupt) Nothing
+ installHandler sigINT (Catch interrupt) Nothing
+ return ()
+#elif __GLASGOW_HASKELL__ >= 603
+ -- GHC 6.3+ has support for console events on Windows
+ -- NOTE: running GHCi under a bash shell for some reason requires
+ -- you to press Ctrl-Break rather than Ctrl-C to provoke
+ -- an interrupt. Ctrl-C is getting blocked somewhere, I don't know
+ -- why --SDM 17/12/2004
+ let sig_handler ControlC = interrupt
+ sig_handler Break = interrupt
+ sig_handler _ = return ()
+
+ installHandler (Catch sig_handler)
return ()
+#else
+ return () -- nothing
+#endif
\end{code}