X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Futils%2FPanic.lhs;h=6251d1baf414bc81b0ca6bc8af5f478b10a1de88;hb=153b9cb9b11e05c4edb1b6bc0a7b972660e41f70;hp=ed6d7963a65d388a142f9d2353139019a0db3d43;hpb=cfd7a0d5daf0c2e2bc6526e941c1e0817432f3b5;p=ghc-hetmet.git

diff --git a/ghc/compiler/utils/Panic.lhs b/ghc/compiler/utils/Panic.lhs
index ed6d796..6251d1b 100644
--- a/ghc/compiler/utils/Panic.lhs
+++ b/ghc/compiler/utils/Panic.lhs
@@ -12,15 +12,15 @@ some unnecessary loops in the module dependency graph.
 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
@@ -31,10 +31,12 @@ import System.Posix.Signals
 # 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
@@ -45,6 +47,7 @@ import EXCEPTION	( throwTo )
 import EXCEPTION	( catchJust, tryJust, ioErrors )
 #endif
 
+import CONCURRENT	( myThreadId )
 import DYNAMIC
 import qualified EXCEPTION as Exception
 import TRACE		( trace )
@@ -121,7 +124,7 @@ showGhcException (Panic s)
 	         ++ "to glasgow-haskell-bugs@haskell.org,\n"
 		 ++ "or http://sourceforge.net/projects/ghc/.\n\n")
 
-#if __GLASGOW_HASKELL__ < 630
+#if __GLASGOW_HASKELL__ < 603
 myMkTyConApp = mkAppTy
 #else 
 myMkTyConApp = mkTyConApp
@@ -136,8 +139,9 @@ instance Typeable GhcException where
 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)
@@ -194,12 +198,28 @@ thread.
 \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}