735fa0c478
Currently attached references are only used for global proxy, source string and code stubs. Mid-term future we want to use attached references for arbitrary objects (in fixed order) provided from outside. This change renames BackReference to SerializerReference to include both back references and attached references. R=mtrofin@chromium.org, vogelheim@chromium.org Review-Url: https://codereview.chromium.org/1992723002 Cr-Commit-Position: refs/heads/master@{#36318}
50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_CONTEXT_MEASURE_H_
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#define V8_CONTEXT_MEASURE_H_
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#include "src/address-map.h"
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#include "src/assert-scope.h"
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#include "src/objects.h"
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namespace v8 {
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namespace internal {
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class ContextMeasure : public ObjectVisitor {
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public:
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explicit ContextMeasure(Context* context);
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int Size() { return size_; }
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int Count() { return count_; }
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void VisitPointers(Object** start, Object** end) override;
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private:
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void MeasureObject(HeapObject* object);
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void MeasureDeferredObjects();
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void MeasureAndRecurse(HeapObject* object);
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bool IsShared(HeapObject* object);
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Context* context_;
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SerializerReferenceMap reference_map_;
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RootIndexMap root_index_map_;
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static const int kMaxRecursion = 16;
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int recursion_depth_;
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List<HeapObject*> deferred_objects_;
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int count_;
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int size_;
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DisallowHeapAllocation no_gc_;
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DISALLOW_COPY_AND_ASSIGN(ContextMeasure);
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_CONTEXT_MEASURE_H_
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