diff --git a/mysys/my_thr_init.c b/mysys/my_thr_init.c index 83d35863eca..236b694726f 100644 --- a/mysys/my_thr_init.c +++ b/mysys/my_thr_init.c @@ -88,6 +88,30 @@ my_bool my_thread_basic_global_init(void) return 0; my_thread_basic_global_init_done= 1; +#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP + /* + Set mutex type to "fast" a.k.a "adaptive" + + In this case the thread may steal the mutex from some other thread + that is waiting for the same mutex. This will save us some + context switches but may cause a thread to 'starve forever' while + waiting for the mutex (not likely if the code within the mutex is + short). + */ + pthread_mutexattr_init(&my_fast_mutexattr); + pthread_mutexattr_settype(&my_fast_mutexattr, + PTHREAD_MUTEX_ADAPTIVE_NP); +#endif + +#ifdef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP + /* + Set mutex type to "errorcheck" + */ + pthread_mutexattr_init(&my_errorcheck_mutexattr); + pthread_mutexattr_settype(&my_errorcheck_mutexattr, + PTHREAD_MUTEX_ERRORCHECK); +#endif + mysql_mutex_init(key_THR_LOCK_malloc, &THR_LOCK_malloc, MY_MUTEX_INIT_FAST); mysql_mutex_init(key_THR_LOCK_open, &THR_LOCK_open, MY_MUTEX_INIT_FAST); mysql_mutex_init(key_THR_LOCK_charset, &THR_LOCK_charset, MY_MUTEX_INIT_FAST); @@ -190,29 +214,6 @@ my_bool my_thread_global_init(void) } #endif /* TARGET_OS_LINUX */ -#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP - /* - Set mutex type to "fast" a.k.a "adaptive" - - In this case the thread may steal the mutex from some other thread - that is waiting for the same mutex. This will save us some - context switches but may cause a thread to 'starve forever' while - waiting for the mutex (not likely if the code within the mutex is - short). - */ - pthread_mutexattr_init(&my_fast_mutexattr); - pthread_mutexattr_settype(&my_fast_mutexattr, - PTHREAD_MUTEX_ADAPTIVE_NP); -#endif -#ifdef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP - /* - Set mutex type to "errorcheck" - */ - pthread_mutexattr_init(&my_errorcheck_mutexattr); - pthread_mutexattr_settype(&my_errorcheck_mutexattr, - PTHREAD_MUTEX_ERRORCHECK); -#endif - mysql_mutex_init(key_THR_LOCK_lock, &THR_LOCK_lock, MY_MUTEX_INIT_FAST); mysql_mutex_init(key_THR_LOCK_isam, &THR_LOCK_isam, MY_MUTEX_INIT_SLOW); mysql_mutex_init(key_THR_LOCK_myisam, &THR_LOCK_myisam, MY_MUTEX_INIT_SLOW);