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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_PlatformRWLock_h
#define mozilla_PlatformRWLock_h
#include "mozilla/Types.h"
#ifndef XP_WIN
# include <pthread.h>
#endif
namespace mozilla::detail {
class RWLockImpl {
public:
explicit MFBT_API RWLockImpl();
MFBT_API ~RWLockImpl();
protected:
[[nodiscard]] MFBT_API bool tryReadLock();
MFBT_API void readLock();
MFBT_API void readUnlock();
[[nodiscard]] MFBT_API bool tryWriteLock();
MFBT_API void writeLock();
MFBT_API void writeUnlock();
private:
RWLockImpl(const RWLockImpl&) = delete;
void operator=(const RWLockImpl&) = delete;
RWLockImpl(RWLockImpl&&) = delete;
void operator=(RWLockImpl&&) = delete;
bool operator==(const RWLockImpl& rhs) = delete;
#ifndef XP_WIN
pthread_rwlock_t mRWLock;
#else
// SRWLock is pointer-sized. We declare it in such a fashion here to avoid
// pulling in windows.h wherever this header is used.
void* mRWLock;
#endif
};
} // namespace mozilla::detail
#endif // mozilla_PlatformRWLock_h
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