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/*
* Copyright 2024 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->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;
/*
* We now call timeout callback in all the cases, as we assume that all
* timeouts are final
*/
ev->cb(ev->io.fd, EV_TIMER, ev->ud);
}
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_io_start(EV_A, &ev->io);
if (timeout > 0) {
/* Update timestamp to avoid timers running early */
ev_now_update_if_cheap(loop);
ev->timeout = timeout;
ev_timer_set(&ev->tm, timeout, 0.0);
ev_timer_start(EV_A, &ev->tm);
}
}
ev_tstamp rspamd_ev_watcher_stop(struct ev_loop *loop,
struct rspamd_io_ev *ev)
{
ev_tstamp elapsed = 0;
if (ev_can_stop(&ev->io)) {
ev_io_stop(EV_A, &ev->io);
}
if (ev->timeout > 0) {
elapsed = ev->timeout - ev_timer_remaining(EV_A, &ev->tm);
ev_timer_stop(EV_A, &ev->tm);
}
return elapsed;
}
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_if_cheap(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);
}
}
}
void rspamd_ev_watcher_reschedule_at(struct ev_loop *loop,
struct rspamd_io_ev *ev,
short what,
ev_tstamp at)
{
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 (at > 0) {
if (!(ev_can_stop(&ev->tm))) {
/* Update timestamp to avoid timers running early */
ev_now_update_if_cheap(loop);
ev->tm.data = ev;
ev_timer_init(&ev->tm, rspamd_ev_watcher_timer_cb, at, 0.0);
ev_timer_start(EV_A, &ev->tm);
}
}
}
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