62159ea316
The CL is a prerequisite for the shared cage. Instead of storing state variables (is_incremental_marking_in_progress, is_young_generation_enabled) in the cage metadata, the CL moves them to HeapHandle. The HeapHandle pointer is now retrieved from page-headers. To make sure that the write-barrier code is better optimized, the HeapHandle definition is moved to internal/ headers. The part of BasePage that contains HeapBase (i.e. HeapHandle) pointer is also extracted and moved to the headers. Bug: v8:12231 Change-Id: I44bf65d99a621d9548e4250386cf87476ca186ac Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3689730 Commit-Queue: Anton Bikineev <bikineev@chromium.org> Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/main@{#81005}
42 lines
1015 B
C++
42 lines
1015 B
C++
// Copyright 2022 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 INCLUDE_CPPGC_HEAP_HANDLE_H_
|
|
#define INCLUDE_CPPGC_HEAP_HANDLE_H_
|
|
|
|
#include "v8config.h" // NOLINT(build/include_directory)
|
|
|
|
namespace cppgc {
|
|
|
|
namespace internal {
|
|
class HeapBase;
|
|
class WriteBarrierTypeForCagedHeapPolicy;
|
|
} // namespace internal
|
|
|
|
/**
|
|
* Opaque handle used for additional heap APIs.
|
|
*/
|
|
class HeapHandle {
|
|
private:
|
|
HeapHandle() = default;
|
|
|
|
V8_INLINE bool is_incremental_marking_in_progress() const {
|
|
return is_incremental_marking_in_progress_;
|
|
}
|
|
|
|
V8_INLINE bool is_young_generation_enabled() const {
|
|
return is_young_generation_enabled_;
|
|
}
|
|
|
|
bool is_incremental_marking_in_progress_ = false;
|
|
bool is_young_generation_enabled_ = false;
|
|
|
|
friend class internal::HeapBase;
|
|
friend class internal::WriteBarrierTypeForCagedHeapPolicy;
|
|
};
|
|
|
|
} // namespace cppgc
|
|
|
|
#endif // INCLUDE_CPPGC_HEAP_HANDLE_H_
|