Beispiel #1
0
struct stasis_subscription *internal_stasis_subscribe(
	struct stasis_topic *topic,
	stasis_subscription_cb callback,
	void *data,
	int needs_mailbox,
	int use_thread_pool)
{
	RAII_VAR(struct stasis_subscription *, sub, NULL, ao2_cleanup);

	if (!topic) {
		return NULL;
	}

	/* The ao2 lock is used for join_cond. */
	sub = ao2_t_alloc(sizeof(*sub), subscription_dtor, stasis_topic_name(topic));
	if (!sub) {
		return NULL;
	}
	ast_uuid_generate_str(sub->uniqueid, sizeof(sub->uniqueid));

	if (needs_mailbox) {
		char tps_name[AST_TASKPROCESSOR_MAX_NAME + 1];

		/* Create name with seq number appended. */
		ast_taskprocessor_build_name(tps_name, sizeof(tps_name), "sub%c:%s",
			use_thread_pool ? 'p' : 'm',
			stasis_topic_name(topic));

		/*
		 * With a small number of subscribers, a thread-per-sub is
		 * acceptable. For a large number of subscribers, a thread
		 * pool should be used.
		 */
		if (use_thread_pool) {
			sub->mailbox = ast_threadpool_serializer(tps_name, pool);
		} else {
			sub->mailbox = ast_taskprocessor_get(tps_name, TPS_REF_DEFAULT);
		}
		if (!sub->mailbox) {
			return NULL;
		}
		ast_taskprocessor_set_local(sub->mailbox, sub);
		/* Taskprocessor has a reference */
		ao2_ref(sub, +1);
	}

	ao2_ref(topic, +1);
	sub->topic = topic;
	sub->callback = callback;
	sub->data = data;
	ast_cond_init(&sub->join_cond, NULL);

	if (topic_add_subscription(topic, sub) != 0) {
		return NULL;
	}
	send_subscription_subscribe(topic, sub);

	ao2_ref(sub, +1);
	return sub;
}
Beispiel #2
0
struct stasis_subscription *internal_stasis_subscribe(
	struct stasis_topic *topic,
	stasis_subscription_cb callback,
	void *data,
	int needs_mailbox,
	int use_thread_pool)
{
	RAII_VAR(struct stasis_subscription *, sub, NULL, ao2_cleanup);

	if (!topic) {
		return NULL;
	}

	/* The ao2 lock is used for join_cond. */
	sub = ao2_t_alloc(sizeof(*sub), subscription_dtor, topic->name);
	if (!sub) {
		return NULL;
	}
	ast_uuid_generate_str(sub->uniqueid, sizeof(sub->uniqueid));

	if (needs_mailbox) {
		/* With a small number of subscribers, a thread-per-sub is
		 * acceptable. For larger number of subscribers, a thread
		 * pool should be used.
		 */
		if (use_thread_pool) {
			sub->mailbox = ast_threadpool_serializer(sub->uniqueid, pool);
		} else {
			sub->mailbox = ast_taskprocessor_get(sub->uniqueid,
				TPS_REF_DEFAULT);
		}
		if (!sub->mailbox) {
			return NULL;
		}
		ast_taskprocessor_set_local(sub->mailbox, sub);
		/* Taskprocessor has a reference */
		ao2_ref(sub, +1);
	}

	ao2_ref(topic, +1);
	sub->topic = topic;
	sub->callback = callback;
	sub->data = data;
	ast_cond_init(&sub->join_cond, NULL);

	if (topic_add_subscription(topic, sub) != 0) {
		return NULL;
	}
	send_subscription_subscribe(topic, sub);

	ao2_ref(sub, +1);
	return sub;
}