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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_PlatformMutex_h
#define mozilla_PlatformMutex_h
#include <utility>
#include "mozilla/Attributes.h"
#include "mozilla/Types.h"
#if !defined(XP_WIN) && !defined(__wasi__)
# include <pthread.h>
#endif
namespace mozilla {
namespace detail {
class ConditionVariableImpl;
class MutexImpl {
public:
struct PlatformData;
explicit MFBT_API MutexImpl();
MFBT_API ~MutexImpl();
protected:
MFBT_API void lock();
MFBT_API void unlock();
// We have a separate, forwarding API so internal uses don't have to go
// through the PLT.
MFBT_API bool tryLock();
private:
MutexImpl(const MutexImpl&) = delete;
void operator=(const MutexImpl&) = delete;
MutexImpl(MutexImpl&&) = delete;
void operator=(MutexImpl&&) = delete;
bool operator==(const MutexImpl& rhs) = delete;
void mutexLock();
bool mutexTryLock();
PlatformData* platformData();
#if !defined(XP_WIN) && !defined(__wasi__)
void* platformData_[sizeof(pthread_mutex_t) / sizeof(void*)];
static_assert(sizeof(pthread_mutex_t) / sizeof(void*) != 0 &&
sizeof(pthread_mutex_t) % sizeof(void*) == 0,
"pthread_mutex_t must have pointer alignment");
#else
void* platformData_[6];
#endif
friend class mozilla::detail::ConditionVariableImpl;
};
} // namespace detail
} // namespace mozilla
#endif // mozilla_PlatformMutex_h