Upgrade V8 to version 4.9.385.28
https://chromium.googlesource.com/v8/v8/+/4.9.385.28
FPIIM-449
Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/src/heap/object-stats.h b/src/heap/object-stats.h
new file mode 100644
index 0000000..e2dcfaa
--- /dev/null
+++ b/src/heap/object-stats.h
@@ -0,0 +1,102 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_HEAP_OBJECT_STATS_H_
+#define V8_HEAP_OBJECT_STATS_H_
+
+#include "src/heap/heap.h"
+#include "src/heap/objects-visiting.h"
+#include "src/objects.h"
+
+namespace v8 {
+namespace internal {
+
+class ObjectStats {
+ public:
+ explicit ObjectStats(Heap* heap) : heap_(heap) {}
+
+ // ObjectStats are kept in two arrays, counts and sizes. Related stats are
+ // stored in a contiguous linear buffer. Stats groups are stored one after
+ // another.
+ enum {
+ FIRST_CODE_KIND_SUB_TYPE = LAST_TYPE + 1,
+ FIRST_FIXED_ARRAY_SUB_TYPE =
+ FIRST_CODE_KIND_SUB_TYPE + Code::NUMBER_OF_KINDS,
+ FIRST_CODE_AGE_SUB_TYPE =
+ FIRST_FIXED_ARRAY_SUB_TYPE + LAST_FIXED_ARRAY_SUB_TYPE + 1,
+ OBJECT_STATS_COUNT = FIRST_CODE_AGE_SUB_TYPE + Code::kCodeAgeCount + 1
+ };
+
+ void ClearObjectStats(bool clear_last_time_stats = false);
+
+ void TraceObjectStats();
+ void TraceObjectStat(const char* name, int count, int size, double time);
+ void CheckpointObjectStats();
+
+ void RecordObjectStats(InstanceType type, size_t size) {
+ DCHECK(type <= LAST_TYPE);
+ object_counts_[type]++;
+ object_sizes_[type] += size;
+ }
+
+ void RecordCodeSubTypeStats(int code_sub_type, int code_age, size_t size) {
+ int code_sub_type_index = FIRST_CODE_KIND_SUB_TYPE + code_sub_type;
+ int code_age_index =
+ FIRST_CODE_AGE_SUB_TYPE + code_age - Code::kFirstCodeAge;
+ DCHECK(code_sub_type_index >= FIRST_CODE_KIND_SUB_TYPE &&
+ code_sub_type_index < FIRST_CODE_AGE_SUB_TYPE);
+ DCHECK(code_age_index >= FIRST_CODE_AGE_SUB_TYPE &&
+ code_age_index < OBJECT_STATS_COUNT);
+ object_counts_[code_sub_type_index]++;
+ object_sizes_[code_sub_type_index] += size;
+ object_counts_[code_age_index]++;
+ object_sizes_[code_age_index] += size;
+ }
+
+ void RecordFixedArraySubTypeStats(int array_sub_type, size_t size) {
+ DCHECK(array_sub_type <= LAST_FIXED_ARRAY_SUB_TYPE);
+ object_counts_[FIRST_FIXED_ARRAY_SUB_TYPE + array_sub_type]++;
+ object_sizes_[FIRST_FIXED_ARRAY_SUB_TYPE + array_sub_type] += size;
+ }
+
+ size_t object_count_last_gc(size_t index) {
+ return object_counts_last_time_[index];
+ }
+
+ size_t object_size_last_gc(size_t index) {
+ return object_sizes_last_time_[index];
+ }
+
+ Isolate* isolate();
+ Heap* heap() { return heap_; }
+
+ private:
+ Heap* heap_;
+
+ // Object counts and used memory by InstanceType
+ size_t object_counts_[OBJECT_STATS_COUNT];
+ size_t object_counts_last_time_[OBJECT_STATS_COUNT];
+ size_t object_sizes_[OBJECT_STATS_COUNT];
+ size_t object_sizes_last_time_[OBJECT_STATS_COUNT];
+};
+
+
+class ObjectStatsVisitor : public StaticMarkingVisitor<ObjectStatsVisitor> {
+ public:
+ static void Initialize(VisitorDispatchTable<Callback>* original);
+
+ static void VisitBase(VisitorId id, Map* map, HeapObject* obj);
+
+ static void CountFixedArray(FixedArrayBase* fixed_array,
+ FixedArraySubInstanceType fast_type,
+ FixedArraySubInstanceType dictionary_type);
+
+ template <VisitorId id>
+ static inline void Visit(Map* map, HeapObject* obj);
+};
+
+} // namespace internal
+} // namespace v8
+
+#endif // V8_HEAP_OBJECT_STATS_H_