nsz Git - musl/blob - src/thread/pthread_mutex_lock.c

   1 #include "pthread_impl.h"
   2
   3 int pthread_mutex_lock(pthread_mutex_t *m)
   4 {
   5         int r;
   6         while ((r=pthread_mutex_trylock(m)) == EBUSY) {
   7                 if (m->_m_type == PTHREAD_MUTEX_ERRORCHECK
   8                  && m->_m_owner == pthread_self()->tid)
   9                         return EDEADLK;
  10                 __wait(&m->_m_lock, &m->_m_waiters, 1, 0);
  11         }
  12         return r;
  13 }