--verify-predictable mode added for ensuring that GC behaves deterministically.

src/spaces-inl.h

Index: src/spaces-inl.h
diff --git a/src/spaces-inl.h b/src/spaces-inl.h
index e863b519a99c0c06f93471d96428caa703dceb7a..450f300e44f7e2f5a24fcb54dbfc45682c874ee1 100644
--- a/src/spaces-inl.h
+++ b/src/spaces-inl.h
@@ -253,30 +253,26 @@ HeapObject* PagedSpace::AllocateLinearly(int size_in_bytes) {
 // Raw allocation.
 AllocationResult PagedSpace::AllocateRaw(int size_in_bytes) {
   HeapObject* object = AllocateLinearly(size_in_bytes);
-  if (object != NULL) {
-    if (identity() == CODE_SPACE) {
-      SkipList::Update(object->address(), size_in_bytes);
-    }
-    return object;
-  }
 
-  ASSERT(!heap()->linear_allocation() ||
+  ASSERT((object == NULL) ||
+         !heap()->linear_allocation() ||
          (anchor_.next_chunk() == &anchor_ &&
           anchor_.prev_chunk() == &anchor_));
 
-  object = free_list_.Allocate(size_in_bytes);
-  if (object != NULL) {
-    if (identity() == CODE_SPACE) {
-      SkipList::Update(object->address(), size_in_bytes);
+  if (object == NULL) {
+    object = free_list_.Allocate(size_in_bytes);
+    if (object == NULL) {
+      object = SlowAllocateRaw(size_in_bytes);
     }
-    return object;
   }
 
-  object = SlowAllocateRaw(size_in_bytes);
   if (object != NULL) {
     if (identity() == CODE_SPACE) {
       SkipList::Update(object->address(), size_in_bytes);
     }
+    if (FLAG_allocations_digest) {
+      heap()->OnAllocationEvent(object, size_in_bytes);

[Hannes Payer (out of office), 2014/06/09 15:23:51]

See my comment about  Heap::AllocateRaw.

[Igor Sheludko, 2014/06/10 08:22:54]

Replied.

+    }
     return object;
   }
 
@@ -299,6 +295,9 @@ AllocationResult NewSpace::AllocateRaw(int size_in_bytes) {
   allocation_info_.set_top(allocation_info_.top() + size_in_bytes);
   ASSERT_SEMISPACE_ALLOCATION_INFO(allocation_info_, to_space_);
 
+  if (FLAG_allocations_digest) {
+    heap()->OnAllocationEvent(obj, size_in_bytes);

[Hannes Payer (out of office), 2014/06/09 15:23:51]

See my comment about  Heap::AllocateRaw.

[Igor Sheludko, 2014/06/10 08:22:54]

Replied.

+  }
   return obj;
 }