cb7aa79b12
We expect that the majority of malloc'd memory held by V8 is allocated in Zone objects. Introduce an Allocator class that is used by Zones to manage memory, and allows for querying the current usage. BUG=none R=titzer@chromium.org,bmeurer@chromium.org,jarin@chromium.org LOG=n TBR=rossberg@chromium.org Review URL: https://codereview.chromium.org/1847543002 Cr-Commit-Position: refs/heads/master@{#35196}
35 lines
805 B
C++
35 lines
805 B
C++
// Copyright 2016 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_BASE_ACCOUNTING_ALLOCATOR_H_
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#define V8_BASE_ACCOUNTING_ALLOCATOR_H_
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#include "src/base/atomicops.h"
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#include "src/base/macros.h"
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namespace v8 {
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namespace base {
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class AccountingAllocator final {
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public:
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AccountingAllocator() = default;
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~AccountingAllocator() = default;
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// Returns nullptr on failed allocation.
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void* Allocate(size_t bytes);
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void Free(void* memory, size_t bytes);
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size_t GetCurrentMemoryUsage() const;
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private:
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AtomicWord current_memory_usage_ = 0;
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DISALLOW_COPY_AND_ASSIGN(AccountingAllocator);
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};
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} // namespace base
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} // namespace v8
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#endif // V8_BASE_ACCOUNTING_ALLOCATOR_H_
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