llvm/libc/src/__support/threads/linux/raw_mutex.h

//===--- Implementation of a Linux RawMutex class ---------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_SRC___SUPPORT_THREADS_LINUX_RAW_MUTEX_H
#define LLVM_LIBC_SRC___SUPPORT_THREADS_LINUX_RAW_MUTEX_H

#include "src/__support/CPP/optional.h"
#include "src/__support/common.h"
#include "src/__support/libc_assert.h"
#include "src/__support/macros/attributes.h"
#include "src/__support/macros/config.h"
#include "src/__support/macros/optimization.h"
#include "src/__support/threads/linux/futex_utils.h"
#include "src/__support/threads/linux/futex_word.h"
#include "src/__support/threads/sleep.h"
#include "src/__support/time/linux/abs_timeout.h"

#ifndef LIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY
#define LIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY …
#endif

#if LIBC_COPT_TIMEOUT_ENSURE_MONOTONICITY
#include "src/__support/time/linux/monotonicity.h"
#endif

#ifndef LIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT
#define LIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT …
#endif

namespace LIBC_NAMESPACE_DECL {
// Lock is a simple timable lock for internal usage.
// This is separated from Mutex because this one does not need to consider
// robustness and reentrancy. Also, this one has spin optimization for shorter
// critical sections.
class RawMutex { … };
} // namespace LIBC_NAMESPACE_DECL

#endif // LLVM_LIBC_SRC___SUPPORT_THREADS_LINUX_RAW_MUTEX_H