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Unified Diff: src/heap/store-buffer.h

Issue 1725073003: Revert of Replace slots buffer with remembered set. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 10 months ago
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Index: src/heap/store-buffer.h
diff --git a/src/heap/store-buffer.h b/src/heap/store-buffer.h
index 06a99a8dcc8e04673172cc8fe5565eb9c3ee3400..e7e9c985eb4c79c544033e722aed9d1f21eb4115 100644
--- a/src/heap/store-buffer.h
+++ b/src/heap/store-buffer.h
@@ -40,6 +40,41 @@
base::VirtualMemory* virtual_memory_;
};
+
+class LocalStoreBuffer BASE_EMBEDDED {
+ public:
+ explicit LocalStoreBuffer(Heap* heap)
+ : top_(new Node(nullptr)), heap_(heap) {}
+
+ ~LocalStoreBuffer() {
+ Node* current = top_;
+ while (current != nullptr) {
+ Node* tmp = current->next;
+ delete current;
+ current = tmp;
+ }
+ }
+
+ inline void Record(Address addr);
+ inline void Process(StoreBuffer* store_buffer);
+
+ private:
+ static const int kBufferSize = 16 * KB;
+
+ struct Node : Malloced {
+ explicit Node(Node* next_node) : next(next_node), count(0) {}
+
+ inline bool is_full() { return count == kBufferSize; }
+
+ Node* next;
+ Address buffer[kBufferSize];
+ int count;
+ };
+
+ Node* top_;
+ Heap* heap_;
+};
+
} // namespace internal
} // namespace v8
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