[heap] pause observers during mark-compact

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 46f62f001d4f2da005586b16de92b8191520458a..2e2953d77a65db233fc53b31c7334986dc8ee84e 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -1385,6 +1385,8 @@ void Heap::MarkCompact() {
   gc_state_ = MARK_COMPACT;
   LOG(isolate_, ResourceEvent("markcompact", "begin"));
 
+  new_space()->PauseInlineAllocationObservers();

[Hannes Payer (out of office), 2015/11/26 09:55:10]

A scope would be cleaner for pausing and resuming. WDYT?

[ofrobots, 2015/12/02 06:05:31]

Done.

+
   uint64_t size_of_objects_before_gc = SizeOfObjects();
 
   mark_compact_collector()->Prepare();
@@ -1402,6 +1404,8 @@ void Heap::MarkCompact() {
   if (FLAG_allocation_site_pretenuring) {
     EvaluateOldSpaceLocalPretenuring(size_of_objects_before_gc);
   }
+
+  new_space()->ResumeInlineAllocationObservers();
 }