blob: 87b19752ee0e4d2845a9e430ae2b60447c4533a4 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
#include "pthread_impl.h"
int pthread_mutex_lock(pthread_mutex_t *m)
{
int r;
if (m->_m_type == PTHREAD_MUTEX_NORMAL && !a_swap(&m->_m_lock, 1))
return 0;
while ((r=pthread_mutex_trylock(m)) == EBUSY) {
if (!(r=m->_m_lock) || (r&0x40000000)) continue;
if ((m->_m_type&3) == PTHREAD_MUTEX_ERRORCHECK
&& (r&0x1fffffff) == pthread_self()->tid)
return EDEADLK;
__wait(&m->_m_lock, &m->_m_waiters, r, 0);
}
return r;
}
|
