X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=rts%2FRaiseAsync.c;h=d562e33680c278c3eb44899db498409d3e2c88aa;hp=d892e9563866a39e3f13fcd40e0274b87876735f;hb=9d03becc597e5b1ab6c8466209a1263bf8ba6f29;hpb=178837a730c65349b32b29bd22356bacde110e18

diff --git a/rts/RaiseAsync.c b/rts/RaiseAsync.c
index d892e95..d562e33 100644
--- a/rts/RaiseAsync.c
+++ b/rts/RaiseAsync.c
@@ -17,6 +17,7 @@
 #include "Updates.h"
 #include "STM.h"
 #include "Sanity.h"
+#include "Profiling.h"
 #if defined(mingw32_HOST_OS)
 #include "win32/IOManager.h"
 #endif
@@ -282,7 +283,13 @@ check_target:
 
 	// ASSUMPTION: tso->block_info must always point to a
 	// closure.  In the threaded RTS it does.
-	if (get_itbl(mvar)->type != MVAR) goto retry;
+        switch (get_itbl(mvar)->type) {
+        case MVAR_CLEAN:
+        case MVAR_DIRTY:
+            break;
+        default:
+            goto retry;
+        }
 
 	info = lockClosure((StgClosure *)mvar);
 
@@ -708,7 +715,7 @@ removeFromQueues(Capability *cap, StgTSO *tso)
     }
 
   default:
-    barf("removeFromQueues");
+    barf("removeFromQueues: %d", tso->why_blocked);
   }
 
  done:
@@ -781,7 +788,7 @@ removeFromQueues(Capability *cap, StgTSO *tso)
 #endif
 
   default:
-      barf("removeFromQueues");
+      barf("removeFromQueues: %d", tso->why_blocked);
   }
 
  done:
@@ -846,6 +853,18 @@ raiseAsync(Capability *cap, StgTSO *tso, StgClosure *exception,
     debugTrace(DEBUG_sched,
 	       "raising exception in thread %ld.", (long)tso->id);
     
+#if defined(PROFILING)
+    /* 
+     * Debugging tool: on raising an  exception, show where we are.
+     * See also Exception.cmm:raisezh_fast.
+     * This wasn't done for asynchronous exceptions originally; see #1450 
+     */
+    if (RtsFlags.ProfFlags.showCCSOnException)
+    {
+        fprintCCS_stderr(tso->prof.CCCS);
+    }
+#endif
+
     // mark it dirty; we're about to change its stack.
     dirtyTSO(tso);
 
@@ -942,10 +961,12 @@ raiseAsync(Capability *cap, StgTSO *tso, StgClosure *exception,
 	}
 
 	case STOP_FRAME:
+	{
 	    // We've stripped the entire stack, the thread is now dead.
 	    tso->what_next = ThreadKilled;
 	    tso->sp = frame + sizeofW(StgStopFrame);
 	    return;
+	}
 
 	case CATCH_FRAME:
 	    // If we find a CATCH_FRAME, and we've got an exception to raise,
@@ -1017,15 +1038,17 @@ raiseAsync(Capability *cap, StgTSO *tso, StgClosure *exception,
 	    // whether the transaction is valid or not because its
 	    // possible validity cannot have caused the exception
 	    // and will not be visible after the abort.
-	    debugTrace(DEBUG_stm, 
-		       "found atomically block delivering async exception");
 
+		{
             StgTRecHeader *trec = tso -> trec;
             StgTRecHeader *outer = stmGetEnclosingTRec(trec);
+	    debugTrace(DEBUG_stm, 
+		       "found atomically block delivering async exception");
             stmAbortTransaction(cap, trec);
 	    stmFreeAbortedTRec(cap, trec);
             tso -> trec = outer;
 	    break;
+	    };
 	    
 	default:
 	    break;