musl/src/thread/pthread_mutex_lock.c

#include "pthread_impl.h"

int pthread_mutex_lock(pthread_mutex_t *m)
{
	int r;
	while ((r=pthread_mutex_trylock(m)) == EBUSY) {
		if (m->_m_type == PTHREAD_MUTEX_ERRORCHECK
		 && m->_m_owner == pthread_self()->tid)
			return EDEADLK;
		__wait(&m->_m_lock, &m->_m_waiters, 1, 0);
	}
	return r;
}
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00			`#include "pthread_impl.h"`

			`int pthread_mutex_lock(pthread_mutex_t *m)`
			`{`
			`int r;`
correct error returns for error-checking mutexes 2011-03-16 16:25:00 -04:00			`while ((r=pthread_mutex_trylock(m)) == EBUSY) {`
			`if (m->_m_type == PTHREAD_MUTEX_ERRORCHECK`
			`&& m->_m_owner == pthread_self()->tid)`
			`return EDEADLK;`
reorganize pthread data structures and move the definitions to alltypes.h this allows sys/types.h to provide the pthread types, as required by POSIX. this design also facilitates forcing ABI-compatible sizes in the arch-specific alltypes.h, while eliminating the need for developers changing the internals of the pthread types to poke around with arch-specific headers they may not be able to test. 2011-02-17 17:16:20 -05:00			`__wait(&m->_m_lock, &m->_m_waiters, 1, 0);`
correct error returns for error-checking mutexes 2011-03-16 16:25:00 -04:00			`}`
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00			`return r;`
			`}`