Reviewers: ulan,
Description:
Read object pointer atomically while updating slots
BUG=425003
[email protected]
LOG=n
Please review this at https://codereview.chromium.org/663023002/
Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+2, -1 lines):
M src/heap/mark-compact.cc
Index: src/heap/mark-compact.cc
diff --git a/src/heap/mark-compact.cc b/src/heap/mark-compact.cc
index
f53fb6c177c675e4e74c685f9633d011398220f6..088e894d3b3272466c5fa8f753ee6c728a656e2a
100644
--- a/src/heap/mark-compact.cc
+++ b/src/heap/mark-compact.cc
@@ -2924,7 +2924,8 @@ class PointersUpdatingVisitor : public ObjectVisitor {
}
static inline void UpdateSlot(Heap* heap, Object** slot) {
- Object* obj = *slot;
+ Object* obj = reinterpret_cast<Object*>(
+ base::NoBarrier_Load(reinterpret_cast<base::AtomicWord*>(slot)));
if (!obj->IsHeapObject()) return;
--
--
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