C++ (Cpp) lws_plat_delete_socket_from_fds Examples

Example #1

File: pollfd.c Project: nkhorman/libwebsockets

int
remove_wsi_socket_from_fds(struct libwebsocket_context *context,
						      struct libwebsocket *wsi)
{
	int m;
	struct libwebsocket_pollargs pa = { wsi->sock, 0, 0 };

	lws_libev_io(context, wsi, LWS_EV_STOP | LWS_EV_READ | LWS_EV_WRITE);

	if (!--context->fds_count) {
		context->protocols[0].callback(context, wsi,
			LWS_CALLBACK_LOCK_POLL,
			wsi->user_space, (void *) &pa, 0);
		goto do_ext;
	}

	if (wsi->sock > context->max_fds) {
		lwsl_err("Socket fd %d too high (%d)\n",
						   wsi->sock, context->max_fds);
		return 1;
	}

	lwsl_info("%s: wsi=%p, sock=%d, fds pos=%d\n", __func__,
				    wsi, wsi->sock, wsi->position_in_fds_table);

	context->protocols[0].callback(context, wsi,
		LWS_CALLBACK_LOCK_POLL,
		wsi->user_space, (void *)&pa, 0);

	m = wsi->position_in_fds_table; /* replace the contents for this */

	/* have the last guy take up the vacant slot */
	context->fds[m] = context->fds[context->fds_count];

	lws_plat_delete_socket_from_fds(context, wsi, m);

	/*
	 * end guy's fds_lookup entry remains unchanged
	 * (still same fd pointing to same wsi)
	 */
	/* end guy's "position in fds table" changed */
	context->lws_lookup[context->fds[context->fds_count].fd]->
						position_in_fds_table = m;
	/* deletion guy's lws_lookup entry needs nuking */
	context->lws_lookup[wsi->sock] = NULL;
	/* removed wsi has no position any more */
	wsi->position_in_fds_table = -1;

do_ext:
	/* remove also from external POLL support via protocol 0 */
	if (wsi->sock) {
		context->protocols[0].callback(context, wsi,
		    LWS_CALLBACK_DEL_POLL_FD, wsi->user_space,
		    (void *) &pa, 0);
	}
	context->protocols[0].callback(context, wsi,
				       LWS_CALLBACK_UNLOCK_POLL,
				       wsi->user_space, (void *) &pa, 0);
	return 0;
}

Example #2

File: pollfd.c Project: wangshubo1989/libwebsockets

int
remove_wsi_socket_from_fds(struct lws *wsi)
{
	int m;
	struct lws *end_wsi;
	struct lws_pollargs pa = { wsi->sock, 0, 0 };
	struct lws_context *context = wsi->context;
	struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];

	lws_libev_io(wsi, LWS_EV_STOP | LWS_EV_READ | LWS_EV_WRITE);

	--pt->fds_count;

#if !defined(_WIN32) && !defined(MBED_OPERATORS)
	if (wsi->sock > context->max_fds) {
		lwsl_err("Socket fd %d too high (%d)\n",
			 wsi->sock, context->max_fds);
		return 1;
	}
#endif

	lwsl_info("%s: wsi=%p, sock=%d, fds pos=%d\n", __func__,
		  wsi, wsi->sock, wsi->position_in_fds_table);

	if (context->protocols[0].callback(wsi, LWS_CALLBACK_LOCK_POLL,
					   wsi->user_space, (void *)&pa, 1))
		return -1;

	m = wsi->position_in_fds_table; /* replace the contents for this */

	/* have the last guy take up the vacant slot */
	pt->fds[m] = pt->fds[pt->fds_count];

	lws_plat_delete_socket_from_fds(context, wsi, m);

	/*
	 * end guy's fds_lookup entry remains unchanged
	 * (still same fd pointing to same wsi)
	 */
	/* end guy's "position in fds table" changed */
	end_wsi = wsi_from_fd(context, pt->fds[pt->fds_count].fd);
	end_wsi->position_in_fds_table = m;
	/* deletion guy's lws_lookup entry needs nuking */
	delete_from_fd(context, wsi->sock);
	/* removed wsi has no position any more */
	wsi->position_in_fds_table = -1;

	/* remove also from external POLL support via protocol 0 */
	if (lws_socket_is_valid(wsi->sock)) {
		if (context->protocols[0].callback(wsi, LWS_CALLBACK_DEL_POLL_FD,
		    wsi->user_space, (void *) &pa, 0))
			return -1;
	}
	if (context->protocols[0].callback(wsi, LWS_CALLBACK_UNLOCK_POLL,
					   wsi->user_space, (void *) &pa, 1))
		return -1;

	return 0;
}

Example #3

File: pollfd.c Project: 5ouya/raspC

int
remove_wsi_socket_from_fds(struct lws *wsi)
{
	struct lws_pollargs pa = { wsi->sock, 0, 0 };
#ifndef LWS_NO_SERVER
	struct lws_pollargs pa1;
#endif
	struct lws_context *context = wsi->context;
	struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
	struct lws *end_wsi;
	int m, ret = 0;

#if !defined(_WIN32) && !defined(MBED_OPERATORS)
	if (wsi->sock > context->max_fds) {
		lwsl_err("fd %d too high (%d)\n", wsi->sock, context->max_fds);
		return 1;
	}
#endif

	if (context->protocols[0].callback(wsi, LWS_CALLBACK_LOCK_POLL,
					   wsi->user_space, (void *)&pa, 1))
		return -1;

	lws_libev_io(wsi, LWS_EV_STOP | LWS_EV_READ | LWS_EV_WRITE);

	lws_pt_lock(pt);

	lwsl_info("%s: wsi=%p, sock=%d, fds pos=%d, end guy pos=%d, endfd=%d\n",
		  __func__, wsi, wsi->sock, wsi->position_in_fds_table,
		  pt->fds_count, pt->fds[pt->fds_count].fd);

	/* the guy who is to be deleted's slot index in pt->fds */
	m = wsi->position_in_fds_table;

	/* have the last guy take up the now vacant slot */
	pt->fds[m] = pt->fds[pt->fds_count - 1];

	lws_plat_delete_socket_from_fds(context, wsi, m);

	/* end guy's "position in fds table" is now the deletion guy's old one */
	end_wsi = wsi_from_fd(context, pt->fds[pt->fds_count].fd);
	assert(end_wsi);
	end_wsi->position_in_fds_table = m;

	/* deletion guy's lws_lookup entry needs nuking */
	delete_from_fd(context, wsi->sock);
	/* removed wsi has no position any more */
	wsi->position_in_fds_table = -1;

	/* remove also from external POLL support via protocol 0 */
	if (lws_socket_is_valid(wsi->sock))
		if (context->protocols[0].callback(wsi, LWS_CALLBACK_DEL_POLL_FD,
						   wsi->user_space, (void *) &pa, 0))
			ret = -1;
#ifndef LWS_NO_SERVER
	/* if this made some room, accept connects on this thread */
	if ((unsigned int)pt->fds_count < context->fd_limit_per_thread - 1)
		_lws_change_pollfd(pt->wsi_listening, 0, LWS_POLLIN, &pa1);
#endif
	lws_pt_unlock(pt);

	if (context->protocols[0].callback(wsi, LWS_CALLBACK_UNLOCK_POLL,
					   wsi->user_space, (void *) &pa, 1))
		ret = -1;

	return ret;
}