Reviewers: ulan,
Description:
Don't scan on scavenge dead large objects.
BUG=
Please review this at https://codereview.chromium.org/994893002/
Base URL: https://chromium.googlesource.com/v8/v8.git@master
Affected files (+9, -0 lines):
M src/heap/store-buffer.cc
Index: src/heap/store-buffer.cc
diff --git a/src/heap/store-buffer.cc b/src/heap/store-buffer.cc
index
62ace0f891acafa31cad031dddfab7ce229a2b1a..7de8632b2ec71636f08ca6bb6470fbfd0c9f77e1
100644
--- a/src/heap/store-buffer.cc
+++ b/src/heap/store-buffer.cc
@@ -452,6 +452,15 @@ void StoreBuffer::ClearInvalidStoreBufferEntries() {
}
old_top_ = new_top;
ClearFilteringHashSets();
+
+ // Don't scan on scavenge dead large objects.
+ LargeObjectIterator it(heap_->lo_space());
+ for (HeapObject* object = it.Next(); object != NULL; object = it.Next())
{
+ MemoryChunk* chunk = MemoryChunk::FromAddress(object->address());
+ if (chunk->scan_on_scavenge() && !Marking::MarkBitFrom(object).Get()) {
+ chunk->set_scan_on_scavenge(false);
+ }
+ }
}
--
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