1 //===-- mutex.h -------------------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef GWP_ASAN_MUTEX_H_ 10 #define GWP_ASAN_MUTEX_H_ 11 12 #include "gwp_asan/platform_specific/mutex_fuchsia.h" // IWYU pragma: keep 13 #include "gwp_asan/platform_specific/mutex_posix.h" // IWYU pragma: keep 14 15 namespace gwp_asan { 16 class Mutex final : PlatformMutex { 17 public: 18 constexpr Mutex() = default; 19 ~Mutex() = default; 20 Mutex(const Mutex &) = delete; 21 Mutex &operator=(const Mutex &) = delete; 22 // Lock the mutex. 23 void lock(); 24 // Nonblocking trylock of the mutex. Returns true if the lock was acquired. 25 bool tryLock(); 26 // Unlock the mutex. 27 void unlock(); 28 }; 29 30 class ScopedLock { 31 public: 32 explicit ScopedLock(Mutex &Mx) : Mu(Mx) { Mu.lock(); } 33 ~ScopedLock() { Mu.unlock(); } 34 ScopedLock(const ScopedLock &) = delete; 35 ScopedLock &operator=(const ScopedLock &) = delete; 36 37 private: 38 Mutex Μ 39 }; 40 } // namespace gwp_asan 41 42 #endif // GWP_ASAN_MUTEX_H_ 43