int pthread_mutex_trylock(pthread_mutex_t *m)
{
int r = mutex_ref(m);
if(r) return r;
return mutex_unref(m,_mutex_trylock(m));
}
int pthread_mutex_timedlock(pthread_mutex_t *m, const struct timespec *ts)
{
unsigned long long t, ct;
int r;
mutex_t *_m;
if (!ts)
return pthread_mutex_lock(m);
r = mutex_ref(m);
if (r)
return r;
/* Try to lock it without waiting */
r = _mutex_trylock (m);
if (r != EBUSY)
return mutex_unref(m,r);
_m = (mutex_t *)*m;
if (_m->type != PTHREAD_MUTEX_NORMAL && COND_LOCKED(_m) && COND_OWNER(_m))
return mutex_unref(m,EDEADLK);
ct = _pthread_time_in_ms();
t = _pthread_time_in_ms_from_timespec(ts);
mutex_unref(m,r);
r = pthread_mutex_lock_intern(m, (ct > t ? 0 : (t - ct)));
return r;
}
int pthread_mutex_timedlock(pthread_mutex_t *m, const struct timespec *ts)
{
unsigned long long t, ct;
#ifndef USE_MUTEX_Mutex
int i = 0;
#endif
int r;
if (!ts) return pthread_mutex_lock(m);
r = mutex_ref(m);
if (r) return r;
/* Try to lock it without waiting */
r=_mutex_trylock(m);
if (r != EBUSY) return mutex_unref(m,r);
mutex_t *_m = (mutex_t *)*m;
if (_m->type != PTHREAD_MUTEX_NORMAL && COND_LOCKED(_m) && COND_OWNER(_m))
return mutex_unref(m,EDEADLK);
ct = _pthread_time_in_ms();
t = _pthread_time_in_ms_from_timespec(ts);
#ifdef USE_MUTEX_Mutex
mutex_unref(m,r);
r = pthread_mutex_lock_intern(m, (ct > t ? 0 : (t - ct)));
#else
mutex_unref(m,EDEADLK);
while (1)
{
/* Have we waited long enough? A high count means we busy-waited probably.*/
if (ct >= t) {
printf("%d: Timeout after %d times\n",(int)GetCurrentThreadId(), i);
return ETIMEDOUT;
}
if ((i & 1) == 0)
Sleep(0); /* waiter that owner gets released. */
/* Try to grab lock */
r = pthread_mutex_trylock(m);
if (r != EBUSY) break;
/* Get current time */
ct = _pthread_time_in_ms();
i ++;
}
#endif
return r;
}
