dupreq_lock
pthread_mutex_t dupreq_lock = PTHREAD_MUTEX_INITIALIZER;
extern pthread_mutex_t dupreq_lock;
mutex_lock(&dupreq_lock);
mutex_unlock(&dupreq_lock);
mutex_unlock(&dupreq_lock);
mutex_unlock(&dupreq_lock);
mutex_unlock(&dupreq_lock);
mutex_unlock(&dupreq_lock);
mutex_lock(&dupreq_lock);
mutex_unlock(&dupreq_lock);
mutex_unlock(&dupreq_lock);
mutex_unlock(&dupreq_lock);
mutex_unlock(&dupreq_lock);
mutex_lock(&dupreq_lock);
mutex_unlock(&dupreq_lock);
mutex_unlock(&dupreq_lock);