44   pthread_rwlock_t* rwlock =  in RWMutexImpl()  local
49   bzero(rwlock, sizeof(pthread_rwlock_t));  in RWMutexImpl()
53   int errorcode = pthread_rwlock_init(rwlock, nullptr);  in RWMutexImpl()
58   data_ = rwlock;  in RWMutexImpl()
64   pthread_rwlock_t* rwlock = static_cast<pthread_rwlock_t*>(data_);  in ~RWMutexImpl()  local
65   assert(rwlock != nullptr);  in ~RWMutexImpl()
66   pthread_rwlock_destroy(rwlock);  in ~RWMutexImpl()
67   free(rwlock);  in ~RWMutexImpl()
73   pthread_rwlock_t* rwlock = static_cast<pthread_rwlock_t*>(data_);  in lock_shared()  local
74   assert(rwlock != nullptr);  in lock_shared()
76   int errorcode = pthread_rwlock_rdlock(rwlock);  in lock_shared()
83   pthread_rwlock_t* rwlock = static_cast<pthread_rwlock_t*>(data_);  in unlock_shared()  local
84   assert(rwlock != nullptr);  in unlock_shared()
86   int errorcode = pthread_rwlock_unlock(rwlock);  in unlock_shared()
93   pthread_rwlock_t* rwlock = static_cast<pthread_rwlock_t*>(data_);  in lock()  local
94   assert(rwlock != nullptr);  in lock()
96   int errorcode = pthread_rwlock_wrlock(rwlock);  in lock()
103   pthread_rwlock_t* rwlock = static_cast<pthread_rwlock_t*>(data_);  in unlock()  local
104   assert(rwlock != nullptr);  in unlock()
106   int errorcode = pthread_rwlock_unlock(rwlock);  in unlock()