{
rtsBool saved_eager;
- if (tso->what_next == ThreadRelocated) {
- // the only way this can happen is if the old TSO was on the
- // mutable list. We might have other links to this defunct
- // TSO, so we must update its link field.
- evacuate((StgClosure**)&tso->_link);
- return;
- }
-
debugTrace(DEBUG_gc,"scavenging thread %d",(int)tso->id);
// update the pointer from the Task.
saved_eager = gct->eager_promotion;
gct->eager_promotion = rtsFalse;
-
evacuate((StgClosure **)&tso->blocked_exceptions);
evacuate((StgClosure **)&tso->bq);
// scavange current transaction record
evacuate((StgClosure **)&tso->trec);
-
- // scavenge this thread's stack
- scavenge_stack(tso->sp, &(tso->stack[tso->stack_size]));
- tso->dirty = gct->failed_to_evac;
+ evacuate((StgClosure **)&tso->stackobj);
evacuate((StgClosure **)&tso->_link);
if ( tso->why_blocked == BlockedOnMVar
}
#endif
- if (tso->dirty == 0 && gct->failed_to_evac) {
- tso->flags |= TSO_LINK_DIRTY;
- } else {
- tso->flags &= ~TSO_LINK_DIRTY;
- }
+ tso->dirty = gct->failed_to_evac;
gct->eager_promotion = saved_eager;
}
case TSO:
{
- StgTSO *tso = (StgTSO *)p;
- scavengeTSO(tso);
- p += tso_sizeW(tso);
+ scavengeTSO((StgTSO *)p);
+ p += sizeofW(StgTSO);
break;
}
+ case STACK:
+ {
+ StgStack *stack = (StgStack*)p;
+
+ gct->eager_promotion = rtsFalse;
+
+ scavenge_stack(stack->sp, stack->stack + stack->stack_size);
+ stack->dirty = gct->failed_to_evac;
+ p += stack_sizeW(stack);
+
+ gct->eager_promotion = saved_eager_promotion;
+ break;
+ }
+
case MUT_PRIM:
{
StgPtr end;
break;
}
+ case STACK:
+ {
+ StgStack *stack = (StgStack*)p;
+
+ gct->eager_promotion = rtsFalse;
+
+ scavenge_stack(stack->sp, stack->stack + stack->stack_size);
+ stack->dirty = gct->failed_to_evac;
+
+ gct->eager_promotion = saved_eager_promotion;
+ break;
+ }
+
case MUT_PRIM:
{
StgPtr end;
break;
}
+ case STACK:
+ {
+ StgStack *stack = (StgStack*)p;
+
+ gct->eager_promotion = rtsFalse;
+
+ scavenge_stack(stack->sp, stack->stack + stack->stack_size);
+ stack->dirty = gct->failed_to_evac;
+
+ gct->eager_promotion = saved_eager_promotion;
+ break;
+ }
+
case MUT_PRIM:
{
StgPtr end;
recordMutableGen_GC((StgClosure *)p,gen->no);
continue;
}
- case TSO: {
- StgTSO *tso = (StgTSO *)p;
- if (tso->dirty == 0) {
- // Should be on the mutable list because its link
- // field is dirty. However, in parallel GC we may
- // have a thread on multiple mutable lists, so
- // this assertion would be invalid:
- // ASSERT(tso->flags & TSO_LINK_DIRTY);
-
- evacuate((StgClosure **)&tso->_link);
- if ( tso->why_blocked == BlockedOnMVar
- || tso->why_blocked == BlockedOnBlackHole
- || tso->why_blocked == BlockedOnMsgThrowTo
- || tso->why_blocked == NotBlocked
- ) {
- evacuate((StgClosure **)&tso->block_info.prev);
- }
- if (gct->failed_to_evac) {
- recordMutableGen_GC((StgClosure *)p,gen->no);
- gct->failed_to_evac = rtsFalse;
- } else {
- tso->flags &= ~TSO_LINK_DIRTY;
- }
- continue;
- }
- }
- default:
+ default:
;
}
static void
scavenge_large_bitmap( StgPtr p, StgLargeBitmap *large_bitmap, nat size )
{
- nat i, b;
+ nat i, j, b;
StgWord bitmap;
b = 0;
- bitmap = large_bitmap->bitmap[b];
- for (i = 0; i < size; ) {
- if ((bitmap & 1) == 0) {
- evacuate((StgClosure **)p);
- }
- i++;
- p++;
- if (i % BITS_IN(W_) == 0) {
- b++;
- bitmap = large_bitmap->bitmap[b];
- } else {
+
+ for (i = 0; i < size; b++) {
+ bitmap = large_bitmap->bitmap[b];
+ j = stg_min(size-i, BITS_IN(W_));
+ i += j;
+ for (; j > 0; j--, p++) {
+ if ((bitmap & 1) == 0) {
+ evacuate((StgClosure **)p);
+ }
bitmap = bitmap >> 1;
- }
+ }
}
}
case CATCH_STM_FRAME:
case CATCH_RETRY_FRAME:
case ATOMICALLY_FRAME:
+ case UNDERFLOW_FRAME:
case STOP_FRAME:
case CATCH_FRAME:
case RET_SMALL: