[project @ 2005-01-21 19:58:51 by sof]

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

diff --git a/ghc/rts/Schedule.c b/ghc/rts/Schedule.c
index 95e9ba4..76fec45 100644 (file)
--- a/ghc/rts/Schedule.c
+++ b/ghc/rts/Schedule.c
@@ -542,7 +542,10 @@ schedule( StgMainThread *mainThread USED_WHEN_RTS_SUPPORTS_THREADS,
     // ToDo: add deadlock detection in GUM (similar to SMP) -- HWL
 #endif
 
-#if defined(RTS_SUPPORTS_THREADS)
+#if defined(RTS_SUPPORTS_THREADS) || defined(mingw32_TARGET_OS)
+    /* win32: might be back here due to awaitEvent() being abandoned
+     * as a result of a console event having been delivered.
+     */
     if ( EMPTY_RUN_QUEUE() ) {
        continue; // nothing to do
     }
@@ -1334,7 +1337,7 @@ run_thread:
        * When next scheduled they will try to commit, this commit will fail and
        * they will retry. */
       for (t = all_threads; t != END_TSO_QUEUE; t = t -> link) {
-        if (t -> trec != NO_TREC && t -> why_blocked == NotBlocked) {
+        if (t -> what_next != ThreadRelocated && t -> trec != NO_TREC && t -> why_blocked == NotBlocked) {
           if (!stmValidateTransaction (t -> trec)) {
             IF_DEBUG(stm, sched_belch("trec %p found wasting its time", t));
 
@@ -1343,7 +1346,9 @@ run_thread:
            // partially-evaluated thunks on the heap.
            raiseAsync_(t, NULL, rtsTrue);
             
+#ifdef REG_R1
            ASSERT(get_itbl((StgClosure *)t->sp)->type == ATOMICALLY_FRAME);
+#endif
           }
         }
       }
@@ -3110,7 +3115,17 @@ raiseAsync_(StgTSO *tso, StgClosure *exception, rtsBool stop_at_atomically)
            ASSERT(stop_at_atomically);
            ASSERT(stmGetEnclosingTRec(tso->trec) == NO_TREC);
            stmCondemnTransaction(tso -> trec);
+#ifdef REG_R1
            tso->sp = frame;
+#else
+           // R1 is not a register: the return convention for IO in
+           // this case puts the return value on the stack, so we
+           // need to set up the stack to return to the atomically
+           // frame properly...
+           tso->sp = frame - 2;
+           tso->sp[1] = (StgWord) &stg_NO_FINALIZER_closure; // why not?
+           tso->sp[0] = (StgWord) &stg_ut_1_0_unreg_info;
+#endif
            tso->what_next = ThreadRunGHC;
            return;
 
@@ -3352,7 +3367,7 @@ findRetryFrameHelper (StgTSO *tso)
     }
   }
 }
-   
+
 /* -----------------------------------------------------------------------------
    resurrectThreads is called after garbage collection on the list of
    threads found to be garbage.  Each of these threads will be woken