Ejemplo n.º 1
0
static void
lws_uv_idle(uv_idle_t *handle
#if UV_VERSION_MAJOR == 0
		, int status
#endif
)
{
	struct lws_context_per_thread *pt = lws_container_of(handle,
					struct lws_context_per_thread, uv_idle);

	lwsl_debug("%s\n", __func__);

	/*
	 * is there anybody with pending stuff that needs service forcing?
	 */
	if (!lws_service_adjust_timeout(pt->context, 1, pt->tid)) {
		/* -1 timeout means just do forced service */
		_lws_plat_service_tsi(pt->context, -1, pt->tid);
		/* still somebody left who wants forced service? */
		if (!lws_service_adjust_timeout(pt->context, 1, pt->tid))
			/* yes... come back again later */
			lwsl_debug("%s: done again\n", __func__);
		return;
	}

	/* there is nobody who needs service forcing, shut down idle */
	uv_idle_stop(handle);

	lwsl_debug("%s: done stop\n", __func__);
}
Ejemplo n.º 2
0
static void
lws_uv_idle(uv_idle_t *handle
#if UV_VERSION_MAJOR == 0
		, int status
#endif
)
{
	struct lws_context_per_thread *pt = lws_container_of(handle,
					struct lws_context_per_thread, uv.idle);
	lws_usec_t us;

	lws_service_do_ripe_rxflow(pt);

	/*
	 * is there anybody with pending stuff that needs service forcing?
	 */
	if (!lws_service_adjust_timeout(pt->context, 1, pt->tid)) {
		/* -1 timeout means just do forced service */
		_lws_plat_service_tsi(pt->context, -1, pt->tid);
		/* still somebody left who wants forced service? */
		if (!lws_service_adjust_timeout(pt->context, 1, pt->tid))
			/* yes... come back again later */
		return;
	}

	/* account for hrtimer */

	lws_pt_lock(pt, __func__);
	us =  __lws_hrtimer_service(pt);
	if (us != LWS_HRTIMER_NOWAIT)
		uv_timer_start(&pt->uv.hrtimer, lws_uv_hrtimer_cb, us / 1000, 0);
	lws_pt_unlock(pt);

	/* there is nobody who needs service forcing, shut down idle */
	uv_idle_stop(handle);
}
Ejemplo n.º 3
0
LWS_EXTERN int
_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
{
	struct lws_context_per_thread *pt;
	WSANETWORKEVENTS networkevents;
	struct lws_pollfd *pfd;
	struct lws *wsi;
	unsigned int i;
	DWORD ev;
	int n;

	/* stay dead once we are dead */
	if (context == NULL || !context->vhost_list)
		return 1;

	pt = &context->pt[tsi];

	if (!pt->service_tid_detected) {
		struct lws _lws;

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

		pt->service_tid = context->vhost_list->
			protocols[0].callback(&_lws, LWS_CALLBACK_GET_THREAD_ID,
						  NULL, NULL, 0);
		pt->service_tid_detected = 1;
	}

	if (timeout_ms < 0) {
		if (lws_service_flag_pending(context, tsi)) {
			/* any socket with events to service? */
			for (n = 0; n < (int)pt->fds_count; n++) {
				int m;
				if (!pt->fds[n].revents)
					continue;

				m = lws_service_fd_tsi(context, &pt->fds[n], tsi);
				if (m < 0)
					return -1;
				/* if something closed, retry this slot */
				if (m)
					n--;
			}
		}
		return 0;
	}

	if (context->event_loop_ops->run_pt)
		context->event_loop_ops->run_pt(context, tsi);

	for (i = 0; i < pt->fds_count; ++i) {
		pfd = &pt->fds[i];

		if (!(pfd->events & LWS_POLLOUT))
			continue;

		wsi = wsi_from_fd(context, pfd->fd);
		if (!wsi || wsi->listener)
			continue;
		if (wsi->sock_send_blocking)
			continue;
		pfd->revents = LWS_POLLOUT;
		n = lws_service_fd(context, pfd);
		if (n < 0)
			return -1;

		/*
		 * Force WSAWaitForMultipleEvents() to check events
		 * and then return immediately.
		 */
		timeout_ms = 0;

		/* if something closed, retry this slot */
		if (n)
			i--;
	}

	/*
	 * is there anybody with pending stuff that needs service forcing?
	 */
	if (!lws_service_adjust_timeout(context, 1, tsi)) {
		/* -1 timeout means just do forced service */
		_lws_plat_service_tsi(context, -1, pt->tid);
		/* still somebody left who wants forced service? */
		if (!lws_service_adjust_timeout(context, 1, pt->tid))
			/* yes... come back again quickly */
			timeout_ms = 0;
	}

	if (timeout_ms) {
		lws_usec_t t;

		lws_pt_lock(pt, __func__);
		/* don't stay in poll wait longer than next hr timeout */
		t =  __lws_hrtimer_service(pt);

		if ((lws_usec_t)timeout_ms * 1000 > t)
			timeout_ms = (int)(t / 1000);
		lws_pt_unlock(pt);
	}

	for (n = 0; n < (int)pt->fds_count; n++)
		WSAEventSelect(pt->fds[n].fd, pt->events,
		       FD_READ | (!!(pt->fds[n].events & LWS_POLLOUT) * FD_WRITE) |
		       FD_OOB | FD_ACCEPT |
		       FD_CONNECT | FD_CLOSE | FD_QOS |
		       FD_ROUTING_INTERFACE_CHANGE |
		       FD_ADDRESS_LIST_CHANGE);

	ev = WSAWaitForMultipleEvents(1, &pt->events, FALSE, timeout_ms, FALSE);
	if (ev == WSA_WAIT_EVENT_0) {
		unsigned int eIdx;

#if defined(LWS_WITH_TLS)
		if (pt->context->tls_ops &&
		    pt->context->tls_ops->fake_POLLIN_for_buffered)
			pt->context->tls_ops->fake_POLLIN_for_buffered(pt);
#endif

		for (eIdx = 0; eIdx < pt->fds_count; ++eIdx) {
			unsigned int err;

			if (WSAEnumNetworkEvents(pt->fds[eIdx].fd, pt->events,
					&networkevents) == SOCKET_ERROR) {
				lwsl_err("WSAEnumNetworkEvents() failed "
					 "with error %d\n", LWS_ERRNO);
				return -1;
			}

			if (!networkevents.lNetworkEvents)
				networkevents.lNetworkEvents = LWS_POLLOUT;

			pfd = &pt->fds[eIdx];
			pfd->revents = (short)networkevents.lNetworkEvents;

			err = networkevents.iErrorCode[FD_CONNECT_BIT];

			if ((networkevents.lNetworkEvents & FD_CONNECT) &&
			     err && err != LWS_EALREADY &&
			     err != LWS_EINPROGRESS && err != LWS_EWOULDBLOCK &&
			     err != WSAEINVAL) {
				lwsl_debug("Unable to connect errno=%d\n", err);
				pfd->revents |= LWS_POLLHUP;
			}

			if (pfd->revents & LWS_POLLOUT) {
				wsi = wsi_from_fd(context, pfd->fd);
				if (wsi)
					wsi->sock_send_blocking = 0;
			}
			 /* if something closed, retry this slot */
			if (pfd->revents & LWS_POLLHUP)
				--eIdx;

			if (pfd->revents) {
				recv(pfd->fd, NULL, 0, 0);
				lws_service_fd_tsi(context, pfd, tsi);
			}
		}
	} else if (ev == WSA_WAIT_TIMEOUT) {
		lws_service_fd(context, NULL);
	} else if (ev == WSA_WAIT_FAILED)
		return 0;

	return 0;
}
Ejemplo n.º 4
0
int
lws_plat_service(struct lws_context *context, int timeout_ms)
{
	return _lws_plat_service_tsi(context, timeout_ms, 0);
}
Ejemplo n.º 5
0
LWS_VISIBLE LWS_EXTERN int
_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
{
	struct lws_context_per_thread *pt = &context->pt[tsi];
	int n = -1, m, c;
	char buf;

	/* stay dead once we are dead */

	if (!context || !context->vhost_list)
		return 1;

	if (timeout_ms < 0)
		goto faked_service;

	lws_libev_run(context, tsi);
	lws_libuv_run(context, tsi);

	if (!context->service_tid_detected) {
		struct lws _lws;

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

		context->service_tid_detected =
			context->vhost_list->protocols[0].callback(
			&_lws, LWS_CALLBACK_GET_THREAD_ID, NULL, NULL, 0);
	}
	context->service_tid = context->service_tid_detected;

	/*
	 * is there anybody with pending stuff that needs service forcing?
	 */
	if (!lws_service_adjust_timeout(context, 1, tsi)) {
		/* -1 timeout means just do forced service */
		_lws_plat_service_tsi(context, -1, pt->tid);
		/* still somebody left who wants forced service? */
		if (!lws_service_adjust_timeout(context, 1, pt->tid))
			/* yes... come back again quickly */
			timeout_ms = 0;
	}

	n = poll(pt->fds, pt->fds_count, timeout_ms);

#ifdef LWS_OPENSSL_SUPPORT
	if (!pt->rx_draining_ext_list &&
	    !lws_ssl_anybody_has_buffered_read_tsi(context, tsi) && !n) {
#else
	if (!pt->rx_draining_ext_list && !n) /* poll timeout */ {
#endif
		lws_service_fd_tsi(context, NULL, tsi);
		return 0;
	}

faked_service:
	m = lws_service_flag_pending(context, tsi);
	if (m)
		c = -1; /* unknown limit */
	else
		if (n < 0) {
			if (LWS_ERRNO != LWS_EINTR)
				return -1;
			return 0;
		} else
			c = n;

	/* any socket with events to service? */
	for (n = 0; n < pt->fds_count && c; n++) {
		if (!pt->fds[n].revents)
			continue;

		c--;

		if (pt->fds[n].fd == pt->dummy_pipe_fds[0]) {
			if (read(pt->fds[n].fd, &buf, 1) != 1)
				lwsl_err("Cannot read from dummy pipe.");
			continue;
		}

		m = lws_service_fd_tsi(context, &pt->fds[n], tsi);
		if (m < 0)
			return -1;
		/* if something closed, retry this slot */
		if (m)
			n--;
	}

	return 0;
}

LWS_VISIBLE int
lws_plat_check_connection_error(struct lws *wsi)
{
	return 0;
}

LWS_VISIBLE int
lws_plat_service(struct lws_context *context, int timeout_ms)
{
	return _lws_plat_service_tsi(context, timeout_ms, 0);
}

LWS_VISIBLE int
lws_plat_set_socket_options(struct lws_vhost *vhost, int fd)
{
	int optval = 1;
	socklen_t optlen = sizeof(optval);

#if defined(__APPLE__) || \
    defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
    defined(__NetBSD__) || \
    defined(__OpenBSD__)
	struct protoent *tcp_proto;
#endif

	if (vhost->ka_time) {
		/* enable keepalive on this socket */
		optval = 1;
		if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE,
			       (const void *)&optval, optlen) < 0)
			return 1;

#if defined(__APPLE__) || \
    defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
    defined(__NetBSD__) || \
        defined(__CYGWIN__) || defined(__OpenBSD__) || defined (__sun)

		/*
		 * didn't find a way to set these per-socket, need to
		 * tune kernel systemwide values
		 */
#else
		/* set the keepalive conditions we want on it too */
		optval = vhost->ka_time;
		if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE,
			       (const void *)&optval, optlen) < 0)
			return 1;

		optval = vhost->ka_interval;
		if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL,
			       (const void *)&optval, optlen) < 0)
			return 1;

		optval = vhost->ka_probes;
		if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT,
			       (const void *)&optval, optlen) < 0)
			return 1;
#endif
	}

	/* Disable Nagle */
	optval = 1;
#if defined (__sun)
	if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (const void *)&optval, optlen) < 0)
		return 1;
#elif !defined(__APPLE__) && \
      !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) &&        \
      !defined(__NetBSD__) && \
      !defined(__OpenBSD__)
	if (setsockopt(fd, SOL_TCP, TCP_NODELAY, (const void *)&optval, optlen) < 0)
		return 1;
#else
	tcp_proto = getprotobyname("TCP");
	if (setsockopt(fd, tcp_proto->p_proto, TCP_NODELAY, &optval, optlen) < 0)
		return 1;
#endif

	/* We are nonblocking... */
	if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
		return 1;

	return 0;
}
Ejemplo n.º 6
0
LWS_VISIBLE LWS_EXTERN int
_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
{
	struct lws_context_per_thread *pt;
	int n = -1, m, c;
	//char buf;

	/* stay dead once we are dead */

	if (!context || !context->vhost_list)
		return 1;

	pt = &context->pt[tsi];

	if (timeout_ms < 0)
		goto faked_service;

	if (!context->service_tid_detected) {
		struct lws _lws;

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

		context->service_tid_detected =
			context->vhost_list->protocols[0].callback(
			&_lws, LWS_CALLBACK_GET_THREAD_ID, NULL, NULL, 0);
		context->service_tid = context->service_tid_detected;
		context->service_tid_detected = 1;
	}

	/*
	 * is there anybody with pending stuff that needs service forcing?
	 */
	if (!lws_service_adjust_timeout(context, 1, tsi)) {
		lwsl_notice("%s: doing forced service\n", __func__);
		/* -1 timeout means just do forced service */
		_lws_plat_service_tsi(context, -1, pt->tid);
		/* still somebody left who wants forced service? */
		if (!lws_service_adjust_timeout(context, 1, pt->tid))
			/* yes... come back again quickly */
			timeout_ms = 0;
	}
#if 1
	n = poll(pt->fds, pt->fds_count, timeout_ms);

#ifdef LWS_OPENSSL_SUPPORT
	if (!pt->rx_draining_ext_list &&
	    !lws_ssl_anybody_has_buffered_read_tsi(context, tsi) && !n) {
#else
	if (!pt->rx_draining_ext_list && !n) /* poll timeout */ {
#endif
		lws_service_fd_tsi(context, NULL, tsi);
		return 0;
	}
#endif
faked_service:
	m = lws_service_flag_pending(context, tsi);
	if (m)
		c = -1; /* unknown limit */
	else
		if (n < 0) {
			if (LWS_ERRNO != LWS_EINTR)
				return -1;
			return 0;
		} else
			c = n;

	/* any socket with events to service? */
	for (n = 0; n < pt->fds_count && c; n++) {
		if (!pt->fds[n].revents)
			continue;

		c--;
#if 0
		if (pt->fds[n].fd == pt->dummy_pipe_fds[0]) {
			if (read(pt->fds[n].fd, &buf, 1) != 1)
				lwsl_err("Cannot read from dummy pipe.");
			continue;
		}
#endif
		m = lws_service_fd_tsi(context, &pt->fds[n], tsi);
		if (m < 0)
			return -1;
		/* if something closed, retry this slot */
		if (m)
			n--;
	}

	return 0;
}

LWS_VISIBLE int
lws_plat_check_connection_error(struct lws *wsi)
{
	return 0;
}

LWS_VISIBLE int
lws_plat_service(struct lws_context *context, int timeout_ms)
{
	return _lws_plat_service_tsi(context, timeout_ms, 0);
}

LWS_VISIBLE int
lws_plat_set_socket_options(struct lws_vhost *vhost, int fd)
{
	return 0;
}

LWS_VISIBLE void
lws_plat_drop_app_privileges(struct lws_context_creation_info *info)
{
}

LWS_VISIBLE int
lws_plat_context_early_init(void)
{
	return 0;
}

LWS_VISIBLE void
lws_plat_context_early_destroy(struct lws_context *context)
{
}

LWS_VISIBLE void
lws_plat_context_late_destroy(struct lws_context *context)
{
	if (context->lws_lookup)
		lws_free(context->lws_lookup);
}

/* cast a struct sockaddr_in6 * into addr for ipv6 */

LWS_VISIBLE int
lws_interface_to_sa(int ipv6, const char *ifname, struct sockaddr_in *addr,
		    size_t addrlen)
{
	return -1;
}

LWS_VISIBLE void
lws_plat_insert_socket_into_fds(struct lws_context *context, struct lws *wsi)
{
	struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];

	pt->fds[pt->fds_count++].revents = 0;
}

LWS_VISIBLE void
lws_plat_delete_socket_from_fds(struct lws_context *context,
						struct lws *wsi, int m)
{
	struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];

	pt->fds_count--;
}

LWS_VISIBLE void
lws_plat_service_periodic(struct lws_context *context)
{
}

LWS_VISIBLE int
lws_plat_change_pollfd(struct lws_context *context,
		      struct lws *wsi, struct lws_pollfd *pfd)
{
	return 0;
}

LWS_VISIBLE const char *
lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt)
{
	//return inet_ntop(af, src, dst, cnt);
	return "lws_plat_inet_ntop";
}

LWS_VISIBLE int
lws_plat_inet_pton(int af, const char *src, void *dst)
{
	//return inet_pton(af, src, dst);
	return 1;
}

LWS_VISIBLE lws_fop_fd_t
_lws_plat_file_open(lws_plat_file_open(struct lws_plat_file_ops *fops,
		    const char *filename, lws_fop_flags_t *flags)
{
	return NULL;
}

LWS_VISIBLE int
_lws_plat_file_close(lws_fop_fd_t *fop_fd)
{
	return 0;
}

LWS_VISIBLE lws_fileofs_t
_lws_plat_file_seek_cur(lws_fop_fd_t fop_fd, lws_fileofs_t offset)
{
	return 0;
}

LWS_VISIBLE  int
_lws_plat_file_read(lws_fop_fd_t fop_fd, lws_filepos_t *amount,
		    uint8_t *buf, lws_filepos_t len)
{

	return 0;
}

LWS_VISIBLE  int
_lws_plat_file_write(lws_fop_fd_t fop_fd, lws_filepos_t *amount,
		     uint8_t *buf, lws_filepos_t len)
{

	return 0;
}


LWS_VISIBLE int
lws_plat_init(struct lws_context *context,
	      struct lws_context_creation_info *info)
{
	/* master context has the global fd lookup array */
	context->lws_lookup = lws_zalloc(sizeof(struct lws *) *
					 context->max_fds, "lws_lookup");
	if (context->lws_lookup == NULL) {
		lwsl_err("OOM on lws_lookup array for %d connections\n",
			 context->max_fds);
		return 1;
	}

	lwsl_notice(" mem: platform fd map: %5lu bytes\n",
		    (long)sizeof(struct lws *) * context->max_fds);

#ifdef LWS_WITH_PLUGINS
	if (info->plugin_dirs)
		lws_plat_plugins_init(context, info->plugin_dirs);
#endif

	return 0;
}
Ejemplo n.º 7
0
LWS_VISIBLE LWS_EXTERN int
_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
{
	struct lws_context_per_thread *pt;
	int n = -1, m, c;

	/* stay dead once we are dead */

	if (!context || !context->vhost_list)
		return 1;

	pt = &context->pt[tsi];
	lws_stats_atomic_bump(context, pt, LWSSTATS_C_SERVICE_ENTRY, 1);
/*
	{
		unsigned long m = lws_now_secs();

		if (m > context->time_last_state_dump) {
			context->time_last_state_dump = m;
			n = esp_get_free_heap_size();
			if (n != context->last_free_heap) {
				if (n > context->last_free_heap)
					lwsl_notice(" heap :%d (+%d)\n", n,
						    n - context->last_free_heap);
				else
					lwsl_notice(" heap :%d (-%d)\n", n,
						    context->last_free_heap - n);
				context->last_free_heap = n;
			}
		}
	}
*/
	if (timeout_ms < 0)
		goto faked_service;

	if (!context->service_tid_detected) {
		struct lws *_lws = lws_zalloc(sizeof(*_lws), "tid probe");

		_lws->context = context;

		context->service_tid_detected =
			context->vhost_list->protocols[0].callback(
			_lws, LWS_CALLBACK_GET_THREAD_ID, NULL, NULL, 0);
		context->service_tid = context->service_tid_detected;
		context->service_tid_detected = 1;
		lws_free(_lws);
	}

	/*
	 * is there anybody with pending stuff that needs service forcing?
	 */
	if (!lws_service_adjust_timeout(context, 1, tsi)) {
		/* -1 timeout means just do forced service */
		_lws_plat_service_tsi(context, -1, pt->tid);
		/* still somebody left who wants forced service? */
		if (!lws_service_adjust_timeout(context, 1, pt->tid))
			/* yes... come back again quickly */
			timeout_ms = 0;
	}

//	n = poll(pt->fds, pt->fds_count, timeout_ms);
	{
		fd_set readfds, writefds, errfds;
		struct timeval tv = { timeout_ms / 1000,
				      (timeout_ms % 1000) * 1000 }, *ptv = &tv;
		int max_fd = 0;
		FD_ZERO(&readfds);
		FD_ZERO(&writefds);
		FD_ZERO(&errfds);

		for (n = 0; n < pt->fds_count; n++) {
			pt->fds[n].revents = 0;
			if (pt->fds[n].fd >= max_fd)
				max_fd = pt->fds[n].fd;
			if (pt->fds[n].events & LWS_POLLIN)
				FD_SET(pt->fds[n].fd, &readfds);
			if (pt->fds[n].events & LWS_POLLOUT)
				FD_SET(pt->fds[n].fd, &writefds);
			FD_SET(pt->fds[n].fd, &errfds);
		}

		n = select(max_fd + 1, &readfds, &writefds, &errfds, ptv);
		n = 0;
		for (m = 0; m < pt->fds_count; m++) {
			c = 0;
			if (FD_ISSET(pt->fds[m].fd, &readfds)) {
				pt->fds[m].revents |= LWS_POLLIN;
				c = 1;
			}
			if (FD_ISSET(pt->fds[m].fd, &writefds)) {
				pt->fds[m].revents |= LWS_POLLOUT;
				c = 1;
			}
			if (FD_ISSET(pt->fds[m].fd, &errfds)) {
				// lwsl_notice("errfds %d\n", pt->fds[m].fd);
				pt->fds[m].revents |= LWS_POLLHUP;
				c = 1;
			}

			if (c)
				n++;
		}
	}
//	lwsl_debug("%s %d n=%d\n", __FUNCTION__, __LINE__, n);
#ifdef LWS_OPENSSL_SUPPORT
	if (!pt->rx_draining_ext_list &&
	    !lws_ssl_anybody_has_buffered_read_tsi(context, tsi) && !n) {
#else
	if (!pt->rx_draining_ext_list && !n) /* poll timeout */ {
#endif
//		lwsl_debug("%s %d n=%d\n", __FUNCTION__, __LINE__, n);
		lws_service_fd_tsi(context, NULL, tsi);
		return 0;
	}

faked_service:
	m = lws_service_flag_pending(context, tsi);
	if (m)
		c = -1; /* unknown limit */
	else
		if (n < 0) {
			if (LWS_ERRNO != LWS_EINTR)
				return -1;
			return 0;
		} else
			c = n;

	/* any socket with events to service? */
	for (n = 0; n < pt->fds_count && c; n++) {
		if (!pt->fds[n].revents)
			continue;

		c--;

		m = lws_service_fd_tsi(context, &pt->fds[n], tsi);
		if (m < 0)
			return -1;
		/* if something closed, retry this slot */
		if (m)
			n--;
	}

	return 0;
}

LWS_VISIBLE int
lws_plat_check_connection_error(struct lws *wsi)
{
	return 0;
}

LWS_VISIBLE int
lws_plat_service(struct lws_context *context, int timeout_ms)
{
	int n = _lws_plat_service_tsi(context, timeout_ms, 0);

	lws_service_fd_tsi(context, NULL, 0);

	return n;
}
Ejemplo n.º 8
0
LWS_VISIBLE LWS_EXTERN int
_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
{
	struct lws_context_per_thread *pt;
	WSANETWORKEVENTS networkevents;
	struct lws_pollfd *pfd;
	struct lws *wsi;
	unsigned int i;
	DWORD ev;
	int n, m;

	/* stay dead once we are dead */
	if (context == NULL || !context->vhost_list)
		return 1;

	pt = &context->pt[tsi];

	if (!context->service_tid_detected) {
		struct lws _lws;

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

		context->service_tid_detected = context->vhost_list->
			protocols[0].callback(&_lws, LWS_CALLBACK_GET_THREAD_ID,
						  NULL, NULL, 0);
		context->service_tid = context->service_tid_detected;
		context->service_tid_detected = 1;
	}

	if (timeout_ms < 0)
	{
			if (lws_service_flag_pending(context, tsi)) {
			/* any socket with events to service? */
			for (n = 0; n < (int)pt->fds_count; n++) {
				if (!pt->fds[n].revents)
					continue;

				m = lws_service_fd_tsi(context, &pt->fds[n], tsi);
				if (m < 0)
					return -1;
				/* if something closed, retry this slot */
				if (m)
					n--;
			}
		}
		return 0;
	}

	for (i = 0; i < pt->fds_count; ++i) {
		pfd = &pt->fds[i];

		if (!(pfd->events & LWS_POLLOUT))
			continue;

		wsi = wsi_from_fd(context, pfd->fd);
		if (wsi->listener)
			continue;
		if (!wsi || wsi->sock_send_blocking)
			continue;
		pfd->revents = LWS_POLLOUT;
		n = lws_service_fd(context, pfd);
		if (n < 0)
			return -1;
		/* if something closed, retry this slot */
		if (n)
			i--;

		if (wsi->trunc_len)
			WSASetEvent(pt->events[0]);
	}

	/*
	 * is there anybody with pending stuff that needs service forcing?
	 */
	if (!lws_service_adjust_timeout(context, 1, tsi)) {
		/* -1 timeout means just do forced service */
		_lws_plat_service_tsi(context, -1, pt->tid);
		/* still somebody left who wants forced service? */
		if (!lws_service_adjust_timeout(context, 1, pt->tid))
			/* yes... come back again quickly */
			timeout_ms = 0;
	}

	ev = WSAWaitForMultipleEvents( 1,  pt->events , FALSE, timeout_ms, FALSE);
	if (ev == WSA_WAIT_EVENT_0) {
		unsigned int eIdx;

		WSAResetEvent(pt->events[0]);

		for (eIdx = 0; eIdx < pt->fds_count; ++eIdx) {
			if (WSAEnumNetworkEvents(pt->fds[eIdx].fd, 0, &networkevents) == SOCKET_ERROR) {
				lwsl_err("WSAEnumNetworkEvents() failed with error %d\n", LWS_ERRNO);
				return -1;
			}

			pfd = &pt->fds[eIdx];
			pfd->revents = (short)networkevents.lNetworkEvents;

			if ((networkevents.lNetworkEvents & FD_CONNECT) &&
				 networkevents.iErrorCode[FD_CONNECT_BIT] &&
				 networkevents.iErrorCode[FD_CONNECT_BIT] != LWS_EALREADY &&
				 networkevents.iErrorCode[FD_CONNECT_BIT] != LWS_EINPROGRESS &&
				 networkevents.iErrorCode[FD_CONNECT_BIT] != LWS_EWOULDBLOCK &&
				 networkevents.iErrorCode[FD_CONNECT_BIT] != WSAEINVAL) {
				lwsl_debug("Unable to connect errno=%d\n",
					   networkevents.iErrorCode[FD_CONNECT_BIT]);
				pfd->revents |= LWS_POLLHUP;
			}

			if (pfd->revents & LWS_POLLOUT) {
				wsi = wsi_from_fd(context, pfd->fd);
				if (wsi)
					wsi->sock_send_blocking = 0;
			}
			 /* if something closed, retry this slot */
			if (pfd->revents & LWS_POLLHUP)
					--eIdx;

			if( pfd->revents != 0 ) {
				lws_service_fd_tsi(context, pfd, tsi);

			}
		}
	}

	context->service_tid = 0;

	if (ev == WSA_WAIT_TIMEOUT) {
		lws_service_fd(context, NULL);
	}
	return 0;;
}
Ejemplo n.º 9
0
LWS_EXTERN int
_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
{
	volatile struct lws_foreign_thread_pollfd *ftp, *next;
	volatile struct lws_context_per_thread *vpt;
	struct lws_context_per_thread *pt;
	int n = -1, m, c;

	/* stay dead once we are dead */

	if (!context || !context->vhost_list)
		return 1;

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

	lws_stats_atomic_bump(context, pt, LWSSTATS_C_SERVICE_ENTRY, 1);

	if (timeout_ms < 0)
		goto faked_service;

	if (context->event_loop_ops->run_pt)
		context->event_loop_ops->run_pt(context, tsi);

	if (!pt->service_tid_detected) {
		struct lws _lws;

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

		pt->service_tid  =
			context->vhost_list->protocols[0].callback(
			&_lws, LWS_CALLBACK_GET_THREAD_ID, NULL, NULL, 0);
		pt->service_tid_detected = 1;
	}

	/*
	 * is there anybody with pending stuff that needs service forcing?
	 */
	if (!lws_service_adjust_timeout(context, 1, tsi)) {
		/* -1 timeout means just do forced service */
		_lws_plat_service_tsi(context, -1, pt->tid);
		/* still somebody left who wants forced service? */
		if (!lws_service_adjust_timeout(context, 1, pt->tid))
			/* yes... come back again quickly */
			timeout_ms = 0;
	}

	if (timeout_ms) {
		lws_pt_lock(pt, __func__);
		/* don't stay in poll wait longer than next hr timeout */
		lws_usec_t t =  __lws_hrtimer_service(pt);
		if ((lws_usec_t)timeout_ms * 1000 > t)
			timeout_ms = t / 1000;
		lws_pt_unlock(pt);
	}

	vpt->inside_poll = 1;
	lws_memory_barrier();
	n = poll(pt->fds, pt->fds_count, timeout_ms);
	vpt->inside_poll = 0;
	lws_memory_barrier();

	/* Collision will be rare and brief.  Just spin until it completes */
	while (vpt->foreign_spinlock)
		;

	/*
	 * At this point we are not inside a foreign thread pollfd change,
	 * and we have marked ourselves as outside the poll() wait.  So we
	 * are the only guys that can modify the lws_foreign_thread_pollfd
	 * list on the pt.  Drain the list and apply the changes to the
	 * affected pollfds in the correct order.
	 */

	lws_pt_lock(pt, __func__);

	ftp = vpt->foreign_pfd_list;
	//lwsl_notice("cleared list %p\n", ftp);
	while (ftp) {
		struct lws *wsi;
		struct lws_pollfd *pfd;

		next = ftp->next;
		pfd = &vpt->fds[ftp->fd_index];
		if (lws_socket_is_valid(pfd->fd)) {
			wsi = wsi_from_fd(context, pfd->fd);
			if (wsi)
				__lws_change_pollfd(wsi, ftp->_and, ftp->_or);
		}
		lws_free((void *)ftp);
		ftp = next;
	}
	vpt->foreign_pfd_list = NULL;
	lws_memory_barrier();

	/* we have come out of a poll wait... check the hrtimer list */

	__lws_hrtimer_service(pt);

	lws_pt_unlock(pt);

	m = 0;
#if defined(LWS_ROLE_WS) && !defined(LWS_WITHOUT_EXTENSIONS)
	m |= !!pt->ws.rx_draining_ext_list;
#endif

	if (pt->context->tls_ops &&
	    pt->context->tls_ops->fake_POLLIN_for_buffered)
		m |= pt->context->tls_ops->fake_POLLIN_for_buffered(pt);

	if (!m && !n) { /* nothing to do */
		lws_service_fd_tsi(context, NULL, tsi);
		lws_service_do_ripe_rxflow(pt);

		return 0;
	}

faked_service:
	m = lws_service_flag_pending(context, tsi);
	if (m)
		c = -1; /* unknown limit */
	else
		if (n < 0) {
			if (LWS_ERRNO != LWS_EINTR)
				return -1;
			return 0;
		} else
			c = n;

	/* any socket with events to service? */
	for (n = 0; n < (int)pt->fds_count && c; n++) {
		if (!pt->fds[n].revents)
			continue;

		c--;

		m = lws_service_fd_tsi(context, &pt->fds[n], tsi);
		if (m < 0) {
			lwsl_err("%s: lws_service_fd_tsi returned %d\n",
				 __func__, m);
			return -1;
		}
		/* if something closed, retry this slot */
		if (m)
			n--;
	}

	lws_service_do_ripe_rxflow(pt);

	return 0;
}