49   pthread_mutex_t* mutex =  in MutexImpl()  local
65   errorcode = pthread_mutex_init(mutex, &attr);  in MutexImpl()
73   data_ = mutex;  in MutexImpl()
79   pthread_mutex_t* mutex = static_cast<pthread_mutex_t*>(data_);  in ~MutexImpl()  local
80   assert(mutex != nullptr);  in ~MutexImpl()
81   pthread_mutex_destroy(mutex);  in ~MutexImpl()
82   free(mutex);  in ~MutexImpl()
88   pthread_mutex_t* mutex = static_cast<pthread_mutex_t*>(data_);  in acquire()  local
89   assert(mutex != nullptr);  in acquire()
91   int errorcode = pthread_mutex_lock(mutex);  in acquire()
98   pthread_mutex_t* mutex = static_cast<pthread_mutex_t*>(data_);  in release()  local
99   assert(mutex != nullptr);  in release()
101   int errorcode = pthread_mutex_unlock(mutex);  in release()
108   pthread_mutex_t* mutex = static_cast<pthread_mutex_t*>(data_);  in tryacquire()  local
109   assert(mutex != nullptr);  in tryacquire()
111   int errorcode = pthread_mutex_trylock(mutex);  in tryacquire()