Start using store buffers. Handle store buffer overflow situation....

src/heap-inl.h

Index: src/heap-inl.h
===================================================================
--- src/heap-inl.h	(revision 6554)
+++ src/heap-inl.h	(working copy)
@@ -340,7 +340,8 @@
   for (int remaining = byte_size / kPointerSize;
        remaining > 0;
        remaining--) {
-    Memory::Object_at(dst) = Memory::Object_at(src);
+    Object* data = Memory::Object_at(src);
+    Memory::Object_at(dst) = data;

[Vyacheslav Egorov (Chromium), 2011/02/02 13:15:47]

revert please

[Erik Corry, 2011/02/03 13:21:17]

Done.

 
     if (Heap::InNewSpace(Memory::Object_at(dst))) {
       StoreBuffer::Mark(dst);
@@ -387,7 +388,12 @@
   // If the first word is a forwarding address, the object has already been
   // copied.
   if (first_word.IsForwardingAddress()) {
-    *p = first_word.ToForwardingAddress();
+    HeapObject* dest = first_word.ToForwardingAddress();
+    *p = dest;
+    Address cell = reinterpret_cast<Address>(p);

[Vyacheslav Egorov (Chromium), 2011/02/02 13:15:47]

cell is a bit confusing cause we have cell_space and cells.

I usually call them slots.

[Erik Corry, 2011/02/03 13:21:17]

Done.

+    if (Heap::InNewSpace(dest) && !Heap::InNewSpace(cell)) {
+      StoreBuffer::EnterDirectlyIntoStoreBuffer(cell);
+    }
     return;
   }