chromium/v8/src/execution/futex-emulation.h

// Copyright 2015 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_EXECUTION_FUTEX_EMULATION_H_
#define V8_EXECUTION_FUTEX_EMULATION_H_

#include <stdint.h>

#include "include/v8-persistent-handle.h"
#include "src/base/atomicops.h"
#include "src/base/macros.h"
#include "src/base/platform/condition-variable.h"
#include "src/base/platform/time.h"
#include "src/tasks/cancelable-task.h"
#include "src/utils/allocation.h"

// Support for emulating futexes, a low-level synchronization primitive. They
// are natively supported by Linux, but must be emulated for other platforms.
// This library emulates them on all platforms using mutexes and condition
// variables for consistency.
//
// This is used by the Futex API defined in the SharedArrayBuffer draft spec,
// found here: https://github.com/tc39/ecmascript_sharedmem

namespace v8 {

class Promise;

namespace base {
class TimeDelta;
}  // namespace base

namespace internal {

class BackingStore;
class FutexWaitList;

class Isolate;
class JSArrayBuffer;

class AtomicsWaitWakeHandle { … };

class FutexWaitListNode { … };

class FutexEmulation : public AllStatic { … };
}  // namespace internal
}  // namespace v8

#endif  // V8_EXECUTION_FUTEX_EMULATION_H_