ERR("Error unlocking mutex. Error = %d \n", unlock_ret);\
} else {\
DBG("Mutex unlocked by thread [%d] \n", syscall(__NR_gettid));\
ERR("Error unlocking mutex. Error = %d \n", unlock_ret);\
} else {\
DBG("Mutex unlocked by thread [%d] \n", syscall(__NR_gettid));\