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//===-- mutex.h -------------------------------------------------*- 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 GWP_ASAN_MUTEX_H_
#define GWP_ASAN_MUTEX_H_
#ifdef __unix__
#include <pthread.h>
#else
#error "GWP-ASan is not supported on this platform."
#endif
namespace gwp_asan {
class Mutex {
public:
constexpr Mutex() = default;
~Mutex() = default;
Mutex(const Mutex &) = delete;
Mutex &operator=(const Mutex &) = delete;
// Lock the mutex.
void lock();
// Nonblocking trylock of the mutex. Returns true if the lock was acquired.
bool tryLock();
// Unlock the mutex.
void unlock();
private:
#ifdef __unix__
pthread_mutex_t Mu = PTHREAD_MUTEX_INITIALIZER;
#endif // defined(__unix__)
};
class ScopedLock {
public:
explicit ScopedLock(Mutex &Mx) : Mu(Mx) { Mu.lock(); }
~ScopedLock() { Mu.unlock(); }
ScopedLock(const ScopedLock &) = delete;
ScopedLock &operator=(const ScopedLock &) = delete;
private:
Mutex Μ
};
} // namespace gwp_asan
#endif // GWP_ASAN_MUTEX_H_
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