#ifndef _LIBLOCKDEP_TEST_COMMON_H
  #define _LIBLOCKDEP_TEST_COMMON_H
  
  #define LOCK_UNLOCK_2(a, b)			\
  	do {					\
  		pthread_mutex_lock(&(a));	\
  		pthread_mutex_lock(&(b));	\
  		pthread_mutex_unlock(&(b));	\
  		pthread_mutex_unlock(&(a));	\
  	} while(0)
  
  #endif