22f80fc176
This adds the following: 1) Heap object structure classes: RawHeap, BaseArena and BasePage. - freelist - linear allocation block 2) ObjectAllocator, a class responsible for object (and page) allocation. The design doc with UML design: https://bit.ly/2VVTcqc User defined arenas are followup. Bug: chromium:1056170 Change-Id: I69a82974bd08e3cf3da90041b1628297cc890891 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2167392 Commit-Queue: Anton Bikineev <bikineev@chromium.org> Reviewed-by: Omer Katz <omerkatz@chromium.org> Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#67425}
27 lines
711 B
C++
27 lines
711 B
C++
// Copyright 2020 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 INCLUDE_CPPGC_INTERNAL_ACCESSORS_H_
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#define INCLUDE_CPPGC_INTERNAL_ACCESSORS_H_
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#include "cppgc/internal/api-constants.h"
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namespace cppgc {
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class Heap;
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namespace internal {
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inline cppgc::Heap* GetHeapFromPayload(const void* payload) {
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return *reinterpret_cast<cppgc::Heap**>(
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((reinterpret_cast<uintptr_t>(payload) & api_constants::kPageBaseMask) +
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api_constants::kGuardPageSize) +
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api_constants::kHeapOffset);
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}
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} // namespace internal
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} // namespace cppgc
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#endif // INCLUDE_CPPGC_INTERNAL_ACCESSORS_H_
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