fix possible ^C problems

Calling prodAllCapabilities() from interruptStgRts() was wrong, for
the same reasons that we stopped doing it in handle_tick().  We now
use the same mechanism (send a byte down the pipe to the IO manager
thread), but abstract it in a wakeUpRts() function in the scheduler.

1 files changed, 1 insertions, 13 deletions

diff --git a/rts/Timer.c b/rts/Timer.c
index 4b13be4556..b4f5f8f130 100644
--- a/rts/Timer.c
+++ b/rts/Timer.c
@@ -72,20 +72,8 @@ handle_tick(int unused STG_UNUSED)
 	  blackholes_need_checking = rtsTrue;
 	  /* hack: re-use the blackholes_need_checking flag */
 	  
-#if !defined(mingw32_HOST_OS)
-	  // This forces the IO Manager thread to wakeup, which will
-	  // in turn ensure that some OS thread wakes up and runs the
-	  // scheduler loop, which will cause a GC and deadlock check.
-	  ioManagerWakeup();
-#else
-	  /* ToDo: this doesn't work.  Can't invoke
-	   * pthread_cond_signal from a signal handler.
-	   * Furthermore, we can't prod a capability that we
-	   * might be holding.  What can we do?
-	   */
-	  prodOneCapability();
-#endif
       }
+      wakeUpRts();
       break;
   default:
       break;