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// Copyright 2021 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_CPPGC_WRITE_BARRIER_H_
#define V8_HEAP_CPPGC_WRITE_BARRIER_H_
#include "include/cppgc/internal/write-barrier.h"
#include "src/base/lazy-instance.h"
#include "src/base/platform/mutex.h"
namespace cppgc {
namespace internal {
class WriteBarrier::FlagUpdater final {
public:
static void Enter() { write_barrier_enabled_.Enter(); }
static void Exit() { write_barrier_enabled_.Exit(); }
private:
FlagUpdater() = delete;
};
#if defined(CPPGC_YOUNG_GENERATION)
class V8_EXPORT_PRIVATE YoungGenerationEnabler final {
public:
static void Enable();
static void Disable();
static bool IsEnabled();
private:
template <typename T>
friend class v8::base::LeakyObject;
static YoungGenerationEnabler& Instance();
YoungGenerationEnabler() = default;
size_t is_enabled_;
v8::base::Mutex mutex_;
};
#endif // defined(CPPGC_YOUNG_GENERATION)
} // namespace internal
} // namespace cppgc
#endif // V8_HEAP_CPPGC_WRITE_BARRIER_H_
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