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/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010-2014 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include "private-libwebsockets.h"
void lws_feature_status_libev(struct lws_context_creation_info *info)
{
if (info->options & LWS_SERVER_OPTION_LIBEV)
lwsl_notice("libev support compiled in and enabled\n");
else
lwsl_notice("libev support compiled in but disabled\n");
}
lws_accept_cb(struct ev_loop *loop, struct ev_io *watcher, int revents)
struct lws_pollfd eventfd;
struct lws_io_watcher *lws_io = container_of(watcher,
struct lws_io_watcher, watcher);
struct lws_context *context = lws_io->context;
if (revents & EV_ERROR)
return;
eventfd.fd = watcher->fd;
eventfd.revents = EV_NONE;
if (revents & EV_READ)
eventfd.revents |= LWS_POLLIN;
if (revents & EV_WRITE)
eventfd.revents |= LWS_POLLOUT;
lws_service_fd(context, &eventfd);
lws_sigint_cb(struct ev_loop *loop, struct ev_signal *watcher, int revents)
{
ev_break(loop, EVBREAK_ALL);
}
LWS_VISIBLE int lws_sigint_cfg(
struct lws_context *context,
int use_ev_sigint,
lws_ev_signal_cb* cb)
{
context->use_ev_sigint = use_ev_sigint;
if( cb ) {
context->lws_ev_sigint_cb = cb;
}
else {
context->lws_ev_sigint_cb = &lws_sigint_cb;
};
return 0;
};
struct lws_context *context,
struct ev_loop *loop)
{
int status = 0;
int backend;
const char * backend_name;
struct ev_io *w_accept = &context->w_accept.watcher;
struct ev_signal *w_sigint = &context->w_sigint.watcher;
if (!loop)
loop = ev_default_loop(0);
context->io_loop = loop;
/*
* Initialize the accept w_accept with the listening socket
* and register a callback for read operations:
*/
ev_io_init(w_accept, lws_accept_cb,
ev_io_start(context->io_loop,w_accept);
/* Register the signal watcher unless the user has indicated otherwise: */
if( context->use_ev_sigint ) {
ev_signal_init(w_sigint, context->lws_ev_sigint_cb, SIGINT);
ev_signal_start(context->io_loop,w_sigint);
};
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backend = ev_backend(loop);
switch (backend) {
case EVBACKEND_SELECT:
backend_name = "select";
break;
case EVBACKEND_POLL:
backend_name = "poll";
break;
case EVBACKEND_EPOLL:
backend_name = "epoll";
break;
case EVBACKEND_KQUEUE:
backend_name = "kqueue";
break;
case EVBACKEND_DEVPOLL:
backend_name = "/dev/poll";
break;
case EVBACKEND_PORT:
backend_name = "Solaris 10 \"port\"";
break;
default:
backend_name = "Unknown libev backend";
break;
};
lwsl_notice(" libev backend: %s\n", backend_name);
return status;
}
LWS_VISIBLE void
lws_libev_accept(struct lws *new_wsi, int accept_fd)
struct lws_context *context = lws_get_context(new_wsi);
struct ev_io *r = &new_wsi->w_read.watcher;
struct ev_io *w = &new_wsi->w_write.watcher;
if (!LWS_LIBEV_ENABLED(context))
return;
new_wsi->w_read.context = context;
new_wsi->w_write.context = context;
ev_io_init(r, lws_accept_cb, accept_fd, EV_READ);
ev_io_init(w, lws_accept_cb, accept_fd, EV_WRITE);
lws_libev_io(struct lws *wsi, int flags)
struct lws_context *context = lws_get_context(wsi);
if (!LWS_LIBEV_ENABLED(context))
return;
if (!context->io_loop)
return;
assert((flags & (LWS_EV_START | LWS_EV_STOP)) &&
(flags & (LWS_EV_READ | LWS_EV_WRITE)));
if (flags & LWS_EV_START) {
if (flags & LWS_EV_WRITE)
ev_io_start(context->io_loop, &wsi->w_write.watcher);
if (flags & LWS_EV_READ)
ev_io_start(context->io_loop, &wsi->w_read.watcher);
} else {
if (flags & LWS_EV_WRITE)
ev_io_stop(context->io_loop, &wsi->w_write.watcher);
if (flags & LWS_EV_READ)
ev_io_stop(context->io_loop, &wsi->w_read.watcher);
}
}
LWS_VISIBLE int
lws_libev_init_fd_table(struct lws_context *context)
{
if (!LWS_LIBEV_ENABLED(context))
return 0;
context->w_accept.context = context;
context->w_sigint.context = context;
return 1;
}
LWS_VISIBLE void
lws_libev_run(const struct lws_context *context)
{
if (context->io_loop && LWS_LIBEV_ENABLED(context))
ev_run(context->io_loop, 0);
}