chromium/third_party/angle/src/libANGLE/ContextMutex.h

//
// Copyright 2023 The ANGLE 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.
//
// ContextMutex.h: Classes for protecting Context access and EGLImage siblings.

#ifndef LIBANGLE_CONTEXT_MUTEX_H_
#define LIBANGLE_CONTEXT_MUTEX_H_

#include <atomic>

#include "common/debug.h"

namespace gl
{
class Context;
}

namespace egl
{
#if defined(ANGLE_ENABLE_CONTEXT_MUTEX)
constexpr bool kIsContextMutexEnabled = true;
#else
constexpr bool kIsContextMutexEnabled = …;
#endif

// Use standard mutex for now
ContextMutexType;

class ContextMutex final : angle::NonCopyable
{ … };

// Prevents destruction while locked, uses mMutex to protect addRef()/releaseAndUnlock() calls.
class [[nodiscard]] ScopedContextMutexAddRefLock final : angle::NonCopyable
{ … };

class [[nodiscard]] ScopedContextMutexLock final
{ … };

}  // namespace egl

#endif  // LIBANGLE_CONTEXT_MUTEX_H_