Esempio n. 1
0
int
dcethread_create(dcethread** _thread, dcethread_attr* attr, void *(*start_routine)(void *), void *arg)
{
    dcethread_start_args *start_args;
    dcethread* thread;
    int detachstate;

    start_args = (dcethread_start_args *) malloc(sizeof(*start_args));
    if (start_args == NULL)
    {
	return dcethread__set_errno(ENOMEM);
    }

    start_args->start = start_routine;
    start_args->data = arg;
    start_args->self = thread = dcethread__new();

    /* Record if this thread was created joinably */
    if (!attr || (pthread_attr_getdetachstate(attr, &detachstate), detachstate == PTHREAD_CREATE_JOINABLE))
    {
	thread->flag.joinable = 1;
    }

    /* If thread is joinable, give it an extra reference */
    if (thread->flag.joinable)
    {
	thread->refs++;
    }

    if (dcethread__set_errno(pthread_create((pthread_t*) &thread->pthread, attr, proxy_start, start_args)))
    {
	dcethread__delete(thread);
	free(start_args);
	return -1;
    }

    DCETHREAD_TRACE("Thread %p: created (pthread %lu)", thread, (unsigned long) thread->pthread);

    dcethread__lock(thread);
    while (thread->state == DCETHREAD_STATE_CREATED)
    {
	dcethread__wait(thread);
    }
    dcethread__unlock(thread);

    DCETHREAD_TRACE("Thread %p: started", thread);

    *_thread = thread;
    return dcethread__set_errno(0);
}
Esempio n. 2
0
void
dcethread__unlock(dcethread* thread)
{
    unsigned int refs;

    dcethread__sanity(thread);

    /* Access reference count while thread is still locked
       in order to avoid race conditions */
    refs = thread->refs;

    thread->flag.locked = 0;
    if (pthread_mutex_unlock((pthread_mutex_t*) &thread->lock))
        DCETHREAD_ERROR("Thread %p: failed to unlock mutex", thread);
    DCETHREAD_TRACE("Thread %p: unlocked", thread);

    if (refs == 0)
    {
	dcethread__delete(thread);
    }
}