Fix #2992: don't create a named event

[ghc-hetmet.git] / rts / Schedule.c

diff --git a/rts/Schedule.c b/rts/Schedule.c
index 28e54f9..47636a3 100644 (file)
--- a/rts/Schedule.c
+++ b/rts/Schedule.c
@@ -1606,29 +1606,38 @@ delete_threads_and_gc:
     
     heap_census = scheduleNeedHeapProfile(rtsTrue);
 
+#if defined(THREADED_RTS)
+    debugTrace(DEBUG_sched, "doing GC");
+    // reset waiting_for_gc *before* GC, so that when the GC threads
+    // emerge they don't immediately re-enter the GC.
+    waiting_for_gc = 0;
+    GarbageCollect(force_major || heap_census, gc_type, cap);
+#else
+    GarbageCollect(force_major || heap_census, 0, cap);
+#endif
+
     if (recent_activity == ACTIVITY_INACTIVE && force_major)
     {
         // We are doing a GC because the system has been idle for a
         // timeslice and we need to check for deadlock.  Record the
         // fact that we've done a GC and turn off the timer signal;
         // it will get re-enabled if we run any threads after the GC.
-        //
-        // Note: this is done before GC, because after GC there might
-        // be threads already running (GarbageCollect() releases the
-        // GC threads when it completes), so we risk turning off the
-        // timer signal when it should really be on.
         recent_activity = ACTIVITY_DONE_GC;
         stopTimer();
     }
+    else
+    {
+        // the GC might have taken long enough for the timer to set
+        // recent_activity = ACTIVITY_INACTIVE, but we aren't
+        // necessarily deadlocked:
+        recent_activity = ACTIVITY_YES;
+    }
 
 #if defined(THREADED_RTS)
-    debugTrace(DEBUG_sched, "doing GC");
-    // reset waiting_for_gc *before* GC, so that when the GC threads
-    // emerge they don't immediately re-enter the GC.
-    waiting_for_gc = 0;
-    GarbageCollect(force_major || heap_census, gc_type, cap);
-#else
-    GarbageCollect(force_major || heap_census, 0, cap);
+    if (gc_type == PENDING_GC_PAR)
+    {
+        releaseGCThreads(cap);
+    }
 #endif
 
     if (heap_census) {