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

Issue 1577853007: [heap] Parallel newspace evacuation, semispace copy, and compaction \o/ (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Disable concurrent sweeping for test expecting # of pages released Created 4 years, 11 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 9eeb00117b8509cd9082b2fdc9f61ee9692ad718..f5af09904d99aebac2d9ad3a9ec4ce0784c2e46e 100644
--- a/src/heap/store-buffer.h
+++ b/src/heap/store-buffer.h
@@ -33,10 +33,6 @@ class StoreBuffer {
// This is used to add addresses to the store buffer non-concurrently.
inline void Mark(Address addr);
- // This is used to add addresses to the store buffer when multiple threads
- // may operate on the store buffer.
- inline void MarkSynchronized(Address addr);
-
// This is used by the heap traversal to enter the addresses into the store
// buffer that should still be in the store buffer after GC. It enters
// addresses directly into the old buffer because the GC starts by wiping the
@@ -216,6 +212,39 @@ class DontMoveStoreBufferEntriesScope {
StoreBuffer* store_buffer_;
bool stored_state_;
};
+
+class LocalStoreBuffer BASE_EMBEDDED {
+ public:
+ LocalStoreBuffer() : top_(new Node(nullptr)) {}
+
+ ~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_;
+};
+
} // namespace internal
} // namespace v8
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