1 #include "pthread_impl.h"
2 #include "atomic.h"
3 
pthread_mutex_consistent(pthread_mutex_t * m)4 int pthread_mutex_consistent(pthread_mutex_t *m)
5 {
6 	int old = m->_m_lock;
7 	int own = old & 0x3fffffff;
8 	if (!(m->_m_type & 4) || !own || !(old & 0x40000000))
9 		return EINVAL;
10 	if (own != __pthread_self()->tid)
11 		return EPERM;
12 	a_and(&m->_m_lock, ~0x40000000);
13 	return 0;
14 }
15