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timer.c
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timer.c
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/*
* Copyright (c) 2009 Mark Heily <mark@heily.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "common.h"
void
test_kevent_timer_add(struct test_context *ctx)
{
struct kevent kev;
kevent_add(ctx->kqfd, &kev, 1, EVFILT_TIMER, EV_ADD, 0, 1000, NULL);
}
void
test_kevent_timer_del(struct test_context *ctx)
{
struct kevent kev;
kevent_add(ctx->kqfd, &kev, 1, EVFILT_TIMER, EV_DELETE, 0, 0, NULL);
test_no_kevents(ctx->kqfd);
}
void
test_kevent_timer_get(struct test_context *ctx)
{
struct kevent kev, ret;
kevent_add(ctx->kqfd, &kev, 1, EVFILT_TIMER, EV_ADD, 0, 1000, NULL);
kev.flags |= EV_CLEAR;
kev.data = 1;
kevent_get(&ret, ctx->kqfd, 1);
kevent_cmp(&kev, &ret);
kevent_add(ctx->kqfd, &kev, 1, EVFILT_TIMER, EV_DELETE, 0, 0, NULL);
}
static void
test_kevent_timer_oneshot(struct test_context *ctx)
{
struct kevent kev, ret;
test_no_kevents(ctx->kqfd);
kevent_add(ctx->kqfd, &kev, 2, EVFILT_TIMER, EV_ADD | EV_ONESHOT, 0, 500,NULL);
/* Retrieve the event */
kev.flags = EV_ADD | EV_CLEAR | EV_ONESHOT;
kev.data = 1;
kevent_get(&ret, ctx->kqfd, 1);
kevent_cmp(&kev, &ret);
/* Check if the event occurs again */
sleep(3);
test_no_kevents(ctx->kqfd);
}
static void
test_kevent_timer_periodic(struct test_context *ctx)
{
struct kevent kev, ret;
test_no_kevents(ctx->kqfd);
kevent_add(ctx->kqfd, &kev, 3, EVFILT_TIMER, EV_ADD, 0, 1000,NULL);
/* Retrieve the event */
kev.flags = EV_ADD | EV_CLEAR;
kev.data = 1;
kevent_get(&ret, ctx->kqfd, 1);
kevent_cmp(&kev, &ret);
/* Check if the event occurs again */
sleep(1);
kevent_get(&ret, ctx->kqfd, 1);
kevent_cmp(&kev, &ret);
/* Delete the event */
kev.flags = EV_DELETE;
kevent_update(ctx->kqfd, &kev);
}
static void
test_kevent_timer_disable_and_enable(struct test_context *ctx)
{
struct kevent kev, ret;
test_no_kevents(ctx->kqfd);
/* Add the watch and immediately disable it */
kevent_add(ctx->kqfd, &kev, 4, EVFILT_TIMER, EV_ADD | EV_ONESHOT, 0, 2000,NULL);
kev.flags = EV_DISABLE;
kevent_update(ctx->kqfd, &kev);
test_no_kevents(ctx->kqfd);
/* Re-enable and check again */
kev.flags = EV_ENABLE;
kevent_update(ctx->kqfd, &kev);
kev.flags = EV_ADD | EV_CLEAR | EV_ONESHOT;
kev.data = 1;
kevent_get(&ret, ctx->kqfd, 1);
kevent_cmp(&kev, &ret);
}
#ifdef EV_DISPATCH
void
test_kevent_timer_dispatch(struct test_context *ctx)
{
struct kevent kev, ret;
test_no_kevents(ctx->kqfd);
kevent_add(ctx->kqfd, &kev, 4, EVFILT_TIMER, EV_ADD | EV_DISPATCH, 0, 200, NULL);
/* Get one event */
kev.flags = EV_ADD | EV_CLEAR | EV_DISPATCH;
kev.data = 1;
kevent_get(&ret, ctx->kqfd, 1);
kevent_cmp(&kev, &ret);
/* Confirm that the knote is disabled due to EV_DISPATCH */
usleep(500000); /* 500 ms */
test_no_kevents(ctx->kqfd);
#if WITH_NATIVE_KQUEUE_BUGS || (!defined(__APPLE__) && !defined(__FreeBSD__))
/*
* macOS and FreeBSD both share the same bug.
*
* When a timer event with EV_DISPATCH is re-enabled
* although the EV_DISPATCH flag is high in the
* returned event the timer filter behaves as if
* EV_DISPATCH it's not set and will fire multiple
* times.
*/
/* Enable the knote and make sure no events are pending */
kevent_add(ctx->kqfd, &kev, 4, EVFILT_TIMER, EV_ENABLE | EV_DISPATCH, 0, 200, NULL);
test_no_kevents(ctx->kqfd);
/* Get the next event */
usleep(1000000); /* 1000 ms */
kev.flags = EV_ADD | EV_CLEAR | EV_DISPATCH;
kev.data = 1;
kevent_get(&ret, ctx->kqfd, 1);
kevent_cmp(&kev, &ret);
#endif
/* Remove the knote and ensure the event no longer fires */
kevent_add(ctx->kqfd, &kev, 4, EVFILT_TIMER, EV_DELETE, 0, 0, NULL);
usleep(500000); /* 500 ms */
test_no_kevents(ctx->kqfd);
}
#endif /* EV_DISPATCH */
void
test_evfilt_timer(struct test_context *ctx)
{
test(kevent_timer_add, ctx);
test(kevent_timer_del, ctx);
test(kevent_timer_get, ctx);
test(kevent_timer_oneshot, ctx);
test(kevent_timer_periodic, ctx);
test(kevent_timer_disable_and_enable, ctx);
#ifdef EV_DISPATCH
test(kevent_timer_dispatch, ctx);
#endif
}