context.c

#endif
	int n;

	lwsl_info("%s: ctx %p\n", __func__, context);

	lws_context_lock(context, "context destroy 2"); /* ------ context { */

	context->being_destroyed2 = 1;

	if (context->pt[0].fds)
		lws_free_set_NULL(context->pt[0].fds);

	/*
	 * free all the per-vhost allocations
	 */

	vh = context->vhost_list;
	while (vh) {
		vh1 = vh->vhost_next;
		__lws_vhost_destroy2(vh);
		vh = vh1;
	}

	/* remove ourselves from the pending destruction list */

	while (context->vhost_pending_destruction_list)
		/* removes itself from list */
		__lws_vhost_destroy2(context->vhost_pending_destruction_list);


	lws_stats_log_dump(context);

	lws_ssl_context_destroy(context);
	lws_plat_context_late_destroy(context);

#if defined(LWS_WITH_PEER_LIMITS)
	for (nu = 0; nu < context->pl_hash_elements; nu++)	{
		lws_start_foreach_llp(struct lws_peer **, peer,
				      context->pl_hash_table[nu]) {
			struct lws_peer *df = *peer;
			*peer = df->next;
			lws_free(df);
			continue;
		} lws_end_foreach_llp(peer, next);
	}
	lws_free(context->pl_hash_table);
#endif

	if (context->external_baggage_free_on_destroy)
		free(context->external_baggage_free_on_destroy);

	lws_check_deferred_free(context, 0, 1);

#if LWS_MAX_SMP > 1
	lws_mutex_refcount_destroy(&context->mr);
#endif

	if (context->event_loop_ops->destroy_context2)
		if (context->event_loop_ops->destroy_context2(context)) {
			context->finalize_destroy_after_internal_loops_stopped = 1;
			return;
		}

	if (!context->pt[0].event_loop_foreign)
		for (n = 0; n < context->count_threads; n++)
			if (context->pt[n].inside_service)
				return;

	lws_context_unlock(context); /* } context ------------------- */

	lws_context_destroy3(context);
}

/*
 * Begin the context takedown
 */

LWS_VISIBLE void
lws_context_destroy(struct lws_context *context)
{
	volatile struct lws_foreign_thread_pollfd *ftp, *next;
	volatile struct lws_context_per_thread *vpt;
	struct lws_context_per_thread *pt;
	struct lws_vhost *vh = NULL;
	struct lws wsi;
	int n, m;

	if (!context)
		return;

	if (context->finalize_destroy_after_internal_loops_stopped) {
		if (context->event_loop_ops->destroy_context2)
			context->event_loop_ops->destroy_context2(context);

		lws_context_destroy3(context);

		return;
	}

	if (context->being_destroyed1) {
		if (!context->being_destroyed2) {
			lws_context_destroy2(context);

			return;
		}
		lwsl_info("%s: ctx %p: already being destroyed\n",
			    __func__, context);

		lws_context_destroy3(context);
		return;
	}

	lwsl_info("%s: ctx %p\n", __func__, context);

	m = context->count_threads;
	context->being_destroyed = 1;
	context->being_destroyed1 = 1;
	context->requested_kill = 1;

	memset(&wsi, 0, sizeof(wsi));
	wsi.context = context;

#ifdef LWS_LATENCY
	if (context->worst_latency_info[0])
		lwsl_notice("Worst latency: %s\n", context->worst_latency_info);
#endif

	while (m--) {
		pt = &context->pt[m];
		vpt = (volatile struct lws_context_per_thread *)pt;

		ftp = vpt->foreign_pfd_list;
		while (ftp) {
			next = ftp->next;
			lws_free((void *)ftp);
			ftp = next;
		}
		vpt->foreign_pfd_list = NULL;

		for (n = 0; (unsigned int)n < context->pt[m].fds_count; n++) {
			struct lws *wsi = wsi_from_fd(context, pt->fds[n].fd);
			if (!wsi)
				continue;

			if (wsi->event_pipe)
				lws_destroy_event_pipe(wsi);
			else
				lws_close_free_wsi(wsi,
					LWS_CLOSE_STATUS_NOSTATUS_CONTEXT_DESTROY,
					"ctx destroy"
					/* no protocol close */);
			n--;
		}
		lws_pt_mutex_destroy(pt);
	}

	/*
	 * inform all the protocols that they are done and will have no more
	 * callbacks.
	 *
	 * We can't free things until after the event loop shuts down.
	 */
	if (context->protocol_init_done)
		vh = context->vhost_list;
	while (vh) {
		struct lws_vhost *vhn = vh->vhost_next;
		lws_vhost_destroy1(vh);
		vh = vhn;
	}

	lws_plat_context_early_destroy(context);

	/*
	 * We face two different needs depending if foreign loop or not.
	 *
	 * 1) If foreign loop, we really want to advance the destroy_context()
	 *    past here, and block only for libuv-style async close completion.
	 *
	 * 2a) If poll, and we exited by ourselves and are calling a final
	 *     destroy_context() outside of any service already, we want to
	 *     advance all the way in one step.
	 *
	 * 2b) If poll, and we are reacting to a SIGINT, service thread(s) may
	 *     be in poll wait or servicing.  We can't advance the
	 *     destroy_context() to the point it's freeing things; we have to
	 *     leave that for the final destroy_context() after the service
	 *     thread(s) are finished calling for service.
	 */

	if (context->event_loop_ops->destroy_context1) {
		context->event_loop_ops->destroy_context1(context);

		return;
	}

	lws_context_destroy2(context);
}