C++ (Cpp) bufferevent_get_underlying Examples

Example #1

File: bufferevent.c Project: Richard-Ni/libevent

int
bufferevent_enable_locking(struct bufferevent *bufev, void *lock)
{
#ifdef _EVENT_DISABLE_THREAD_SUPPORT
	return -1;
#else
	struct bufferevent *underlying;

	if (BEV_UPCAST(bufev)->lock)
		return -1;
	underlying = bufferevent_get_underlying(bufev);

	if (!lock && underlying && BEV_UPCAST(underlying)->lock) {
		lock = BEV_UPCAST(underlying)->lock;
		BEV_UPCAST(bufev)->lock = lock;
		BEV_UPCAST(bufev)->own_lock = 0;
	} else if (!lock) {
		EVTHREAD_ALLOC_LOCK(lock, EVTHREAD_LOCKTYPE_RECURSIVE);
		if (!lock)
			return -1;
		BEV_UPCAST(bufev)->lock = lock;
		BEV_UPCAST(bufev)->own_lock = 1;
	} else {
		BEV_UPCAST(bufev)->lock = lock;
		BEV_UPCAST(bufev)->own_lock = 0;
	}
	evbuffer_enable_locking(bufev->input, lock);
	evbuffer_enable_locking(bufev->output, lock);

	if (underlying && !BEV_UPCAST(underlying)->lock)
		bufferevent_enable_locking(underlying, lock);

	return 0;
#endif
}

Example #2

File: compat_libevent.c Project: chenglong7997/Tor

static struct bufferevent *
tor_get_root_bufferevent(struct bufferevent *bev)
{
  struct bufferevent *u;
  while ((u = bufferevent_get_underlying(bev)) != NULL)
    bev = u;
  return bev;
}

Example #3

File: bufferevent.c Project: andyk/load_gen

void
_bufferevent_decref_and_unlock(struct bufferevent *bufev)
{
	struct bufferevent_private *bufev_private =
	    EVUTIL_UPCAST(bufev, struct bufferevent_private, bev);
	struct bufferevent *underlying;

	if (--bufev_private->refcnt) {
		BEV_UNLOCK(bufev);
		return;
	}

	underlying = bufferevent_get_underlying(bufev);

	/* Clean up the shared info */
	if (bufev->be_ops->destruct)
		bufev->be_ops->destruct(bufev);

	/* XXX what happens if refcnt for these buffers is > 1?
	 * The buffers can share a lock with this bufferevent object,
	 * but the lock might be destroyed below. */
	/* evbuffer will free the callbacks */
	evbuffer_free(bufev->input);
	evbuffer_free(bufev->output);

	if (bufev_private->rate_limiting) {
		if (bufev_private->rate_limiting->group)
			bufferevent_remove_from_rate_limit_group(bufev);
		if (event_initialized(&bufev_private->rate_limiting->refill_bucket_event))
			event_del(&bufev_private->rate_limiting->refill_bucket_event);
		event_debug_unassign(&bufev_private->rate_limiting->refill_bucket_event);
		mm_free(bufev_private->rate_limiting);
		bufev_private->rate_limiting = NULL;
	}

	event_debug_unassign(&bufev->ev_read);
	event_debug_unassign(&bufev->ev_write);

	BEV_UNLOCK(bufev);
	if (bufev_private->own_lock)
		EVTHREAD_FREE_LOCK(bufev_private->lock,
		    EVTHREAD_LOCKTYPE_RECURSIVE);

	/* Free the actual allocated memory. */
	mm_free(bufev - bufev->be_ops->mem_offset);

	/* release the reference to underlying now that we no longer need
	 * the reference to it.  This is mainly in case our lock is shared
	 * with underlying.
	 * XXX Should we/can we just refcount evbuffer/bufferevent locks?
	 * It would probably save us some headaches.
	 */
	if (underlying)
		bufferevent_decref(underlying);
}

Example #4

File: bufferevent.c Project: CauldronDevelopmentLLC/cbang

static void
bufferevent_finalize_cb_(struct event_callback *evcb, void *arg_)
{
	struct bufferevent *bufev = arg_;
	struct bufferevent *underlying;
	struct bufferevent_private *bufev_private =
	    EVUTIL_UPCAST(bufev, struct bufferevent_private, bev);

	BEV_LOCK(bufev);
	underlying = bufferevent_get_underlying(bufev);

	/* Clean up the shared info */
	if (bufev->be_ops->destruct)
		bufev->be_ops->destruct(bufev);

	/* XXX what happens if refcnt for these buffers is > 1?
	 * The buffers can share a lock with this bufferevent object,
	 * but the lock might be destroyed below. */
	/* evbuffer will free the callbacks */
	evbuffer_free(bufev->input);
	evbuffer_free(bufev->output);

	if (bufev_private->rate_limiting) {
		if (bufev_private->rate_limiting->group)
			bufferevent_remove_from_rate_limit_group_internal_(bufev,0);
		mm_free(bufev_private->rate_limiting);
		bufev_private->rate_limiting = NULL;
	}


	BEV_UNLOCK(bufev);

	if (bufev_private->own_lock)
		EVTHREAD_FREE_LOCK(bufev_private->lock,
		    EVTHREAD_LOCKTYPE_RECURSIVE);

	/* Free the actual allocated memory. */
	mm_free(((char*)bufev) - bufev->be_ops->mem_offset);

	/* Release the reference to underlying now that we no longer need the
	 * reference to it.  We wait this long mainly in case our lock is
	 * shared with underlying.
	 *
	 * The 'destruct' function will also drop a reference to underlying
	 * if BEV_OPT_CLOSE_ON_FREE is set.
	 *
	 * XXX Should we/can we just refcount evbuffer/bufferevent locks?
	 * It would probably save us some headaches.
	 */
	if (underlying)
		bufferevent_decref_(underlying);
}