Expose gc(true) to JavaScript, which triggers a scavenger GC.

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index 0d2cc42402f4b3457b1d28340984069d452dbd7d..9458ab0065faecfe3a677b8723a248da02ebd542 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -671,9 +671,9 @@ bool Heap::CollectGarbage(AllocationSpace space,
 }
 
 
-void Heap::PerformScavenge() {
+void Heap::PerformScavenge(bool force_scavenge) {

[Michael Starzinger, 2012/10/25 11:47:29]

This change becomes obsolete then.

[haraken, 2012/10/25 11:54:49]

Done.

   GCTracer tracer(this, NULL, NULL);
-  if (incremental_marking()->IsStopped()) {
+  if (force_scavenge || incremental_marking()->IsStopped()) {
     PerformGarbageCollection(SCAVENGER, &tracer);
   } else {
     PerformGarbageCollection(MARK_COMPACTOR, &tracer);
@@ -852,6 +852,10 @@ void Heap::UpdateSurvivalRateTrend(int start_new_space_size) {
 
 bool Heap::PerformGarbageCollection(GarbageCollector collector,
                                     GCTracer* tracer) {
+  if (collector == SCAVENGER)

[Michael Starzinger, 2012/10/25 11:47:29]

Looks like leftover debugging code.

[haraken, 2012/10/25 11:54:49]

Done.

+    fprintf(stderr, "SCAVENGER\n");
+  else
+    fprintf(stderr, "MARK_AND_COMPACT\n");
   bool next_gc_likely_to_collect_more = false;
 
   if (collector != SCAVENGER) {