Method add_close_callback

lib_acl_cpp/src/stream/aio_stream.cpp:169–206

}

void aio_stream::add_close_callback(aio_callback* callback)
{
	acl_assert(callback);

	// copy on write
	if (close_callbacks_ == NULL) {
		close_callbacks_ = NEW std::list<AIO_CALLBACK*>;
	}

	// �Ȳ�ѯ�ûص������Ѿ�����
	std::list<AIO_CALLBACK*>::iterator it = close_callbacks_->begin();
	for (; it != close_callbacks_->end(); ++it) {
		if ((*it)->callback == callback) {
			if ((*it)->enable == false) {
				(*it)->enable = true;
			}
			return;
		}
	}

	// ��һ����λ
	it = close_callbacks_->begin();
	for (; it != close_callbacks_->end(); ++it) {
		if ((*it)->callback == NULL) {
			(*it)->enable   = true;
			(*it)->callback = callback;
			return;
		}
	}

	// ����һ���µ�λ��
	AIO_CALLBACK* ac = (AIO_CALLBACK*) acl_mycalloc(1, sizeof(AIO_CALLBACK));
	ac->enable   = true;
	ac->callback = callback;

	// ���ӽ��ص����������
	close_callbacks_->push_back(ac);
}

void aio_stream::add_timeout_callback(aio_callback* callback)
{