5  * SPDX-License-Identifier: Apache-2.0
37  * We reserve the MSB to mark a pthread_mutex_t as initialized (from the
38  * perspective of the application). With a linear space, this means that
46 	return m - posix_mutex_pool;  in posix_mutex_to_offset()
56 	int actually_initialized;  in get_posix_mutex()
82 	int err;  in to_posix_mutex()
90 	/* Try and automatically associate a posix_mutex */  in to_posix_mutex()
108 static int acquire_mutex(pthread_mutex_t *mu, k_timeout_t timeout)  in acquire_mutex()
110 	int type = -1;  in acquire_mutex()
111 	size_t bit = -1;  in acquire_mutex()
112 	int ret = EINVAL;  in acquire_mutex()
113 	size_t lock_count = -1;  in acquire_mutex()
129 		owner = m->owner;  in acquire_mutex()
130 		lock_count = m->lock_count;  in acquire_mutex()
146 			LOG_DBG("Attempt to relock non-recursive mutex %p", m);  in acquire_mutex()
159 			LOG_DBG("Attempt to recursively lock non-recursive mutex %p", m);  in acquire_mutex()
171 		if (ret == -EAGAIN) {  in acquire_mutex()
174 			 * special quirk - k_mutex_lock() returns EAGAIN if a timeout occurs, but  in acquire_mutex()
184 		ret = -ret;  in acquire_mutex()
195  * @brief Lock POSIX mutex with non-blocking call.
199 int pthread_mutex_trylock(pthread_mutex_t *m)  in pthread_mutex_trylock()
210 int pthread_mutex_timedlock(pthread_mutex_t *m,  in pthread_mutex_timedlock()
222 int pthread_mutex_init(pthread_mutex_t *mu, const pthread_mutexattr_t *_attr)  in pthread_mutex_init()
239 		posix_mutex_type[bit] = attr->type;  in pthread_mutex_init()
253 int pthread_mutex_lock(pthread_mutex_t *m)  in pthread_mutex_lock()
263 int pthread_mutex_unlock(pthread_mutex_t *mu)  in pthread_mutex_unlock()
265 	int ret;  in pthread_mutex_unlock()
276 		return -ret;  in pthread_mutex_unlock()
290 int pthread_mutex_destroy(pthread_mutex_t *mu)  in pthread_mutex_destroy()
292 	int err;  in pthread_mutex_destroy()
315 int pthread_mutexattr_getprotocol(const pthread_mutexattr_t *attr,  in pthread_mutexattr_getprotocol()
316 				  int *protocol)  in pthread_mutexattr_getprotocol()
331 int pthread_mutexattr_setprotocol(pthread_mutexattr_t *attr, int protocol)  in pthread_mutexattr_setprotocol()
349 int pthread_mutexattr_init(pthread_mutexattr_t *attr)  in pthread_mutexattr_init()
351 	struct pthread_mutexattr *const a = (struct pthread_mutexattr *)attr;  in pthread_mutexattr_init()  local
353 	if (a == NULL) {  in pthread_mutexattr_init()
357 	a->type = PTHREAD_MUTEX_DEFAULT;  in pthread_mutexattr_init()
358 	a->initialized = true;  in pthread_mutexattr_init()
363 int pthread_mutexattr_destroy(pthread_mutexattr_t *attr)  in pthread_mutexattr_destroy()
365 	struct pthread_mutexattr *const a = (struct pthread_mutexattr *)attr;  in pthread_mutexattr_destroy()  local
367 	if (a == NULL || !a->initialized) {  in pthread_mutexattr_destroy()
371 	*a = (struct pthread_mutexattr){0};  in pthread_mutexattr_destroy()
381 int pthread_mutexattr_gettype(const pthread_mutexattr_t *attr, int *type)  in pthread_mutexattr_gettype()
383 	const struct pthread_mutexattr *a = (const struct pthread_mutexattr *)attr;  in pthread_mutexattr_gettype()  local
385 	if (a == NULL || type == NULL || !a->initialized) {  in pthread_mutexattr_gettype()
389 	*type = a->type;  in pthread_mutexattr_gettype()
399 int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type)  in pthread_mutexattr_settype()
401 	struct pthread_mutexattr *const a = (struct pthread_mutexattr *)attr;  in pthread_mutexattr_settype()  local
403 	if (a == NULL || !a->initialized) {  in pthread_mutexattr_settype()
411 		a->type = type;  in pthread_mutexattr_settype()
419 int pthread_mutex_getprioceiling(const pthread_mutex_t *mutex, int *prioceiling)  in pthread_mutex_getprioceiling()
427 int pthread_mutex_setprioceiling(pthread_mutex_t *mutex, int prioceiling, int *old_ceiling)  in pthread_mutex_setprioceiling()
436 int pthread_mutexattr_getprioceiling(const pthread_mutexattr_t *attr, int *prioceiling)  in pthread_mutexattr_getprioceiling()
444 int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *attr, int prioceiling)  in pthread_mutexattr_setprioceiling()
454 static int pthread_mutex_pool_init(void)  in pthread_mutex_pool_init()
456 	int err;  in pthread_mutex_pool_init()