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/*-
* Copyright 2019 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "libev_helper.h"
static void
rspamd_ev_watcher_io_cb (EV_P_ struct ev_io *w, int revents)
{
struct rspamd_io_ev *ev = (struct rspamd_io_ev *)w->data;
ev->last_activity = ev_now (EV_A);
ev->cb (ev->io.fd, revents, ev->ud);
}
static void
rspamd_ev_watcher_timer_cb (EV_P_ struct ev_timer *w, int revents)
{
struct rspamd_io_ev *ev = (struct rspamd_io_ev *)w->data;
ev_tstamp after = ev->last_activity - ev_now (EV_A) + ev->timeout;
if (after < 0.) {
/* Real timeout */
ev->cb (ev->io.fd, EV_TIMER, ev->ud);
}
else {
/* Start another cycle as there was some activity */
w->repeat = after;
ev_timer_again (EV_A_ w);
}
}
void
rspamd_ev_watcher_init (struct rspamd_io_ev *ev,
int fd,
short what,
rspamd_ev_cb cb,
void *ud)
{
ev_io_init (&ev->io, rspamd_ev_watcher_io_cb, fd, what);
ev->io.data = ev;
ev_init (&ev->tm, rspamd_ev_watcher_timer_cb);
ev->tm.data = ev;
ev->ud = ud;
ev->cb = cb;
}
void
rspamd_ev_watcher_start (struct ev_loop *loop,
struct rspamd_io_ev *ev,
ev_tstamp timeout)
{
g_assert (ev->cb != NULL);
ev->last_activity = ev_now (EV_A);
ev_io_start (EV_A_ &ev->io);
if (timeout > 0) {
/* Update timestamp to avoid timers running early */
ev_now_update (loop);
ev->timeout = timeout;
ev_timer_set (&ev->tm, timeout, 0.0);
ev_timer_start (EV_A_ &ev->tm);
}
}
void
rspamd_ev_watcher_stop (struct ev_loop *loop,
struct rspamd_io_ev *ev)
{
if (ev_can_stop (&ev->io)) {
ev_io_stop (EV_A_ &ev->io);
}
if (ev->timeout > 0) {
ev_timer_stop (EV_A_ &ev->tm);
}
}
void
rspamd_ev_watcher_reschedule (struct ev_loop *loop,
struct rspamd_io_ev *ev,
short what)
{
g_assert (ev->cb != NULL);
if (ev_can_stop (&ev->io)) {
ev_io_stop (EV_A_ &ev->io);
ev_io_set (&ev->io, ev->io.fd, what);
ev_io_start (EV_A_ &ev->io);
}
else {
ev->io.data = ev;
ev_io_init (&ev->io, rspamd_ev_watcher_io_cb, ev->io.fd, what);
ev_io_start (EV_A_ &ev->io);
}
if (ev->timeout > 0) {
if (!(ev_can_stop (&ev->tm))) {
/* Update timestamp to avoid timers running early */
ev_now_update (loop);
ev->tm.data = ev;
ev_timer_init (&ev->tm, rspamd_ev_watcher_timer_cb, ev->timeout, 0.0);
ev_timer_start (EV_A_ &ev->tm);
}
}
ev->last_activity = ev_now (EV_A);
}
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