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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.
*
* $FreeBSD$
*/
#include "common.h"
int kqfd;
int sockfd[2];
static void
kevent_socket_drain(void)
{
char buf[1];
/* Drain the read buffer, then make sure there are no more events. */
puts("draining the read buffer");
if (read(sockfd[0], &buf[0], 1) < 1)
err(1, "read(2)");
}
static void
kevent_socket_fill(void)
{
puts("filling the read buffer");
if (write(sockfd[1], ".", 1) < 1)
err(1, "write(2)");
}
void
test_kevent_socket_add(void)
{
const char *test_id = "kevent(EVFILT_READ, EV_ADD)";
struct kevent kev;
test_begin(test_id);
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
success();
}
void
test_kevent_socket_get(void)
{
const char *test_id = "kevent(EVFILT_READ) wait";
struct kevent kev;
test_begin(test_id);
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
kevent_socket_fill();
kev.data = 1;
kevent_cmp(&kev, kevent_get(kqfd));
kevent_socket_drain();
test_no_kevents();
kev.flags = EV_DELETE;
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
success();
}
void
test_kevent_socket_clear(void)
{
const char *test_id = "kevent(EVFILT_READ, EV_CLEAR)";
struct kevent kev;
test_begin(test_id);
test_no_kevents();
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
kevent_socket_fill();
kevent_socket_fill();
kev.data = 2;
kevent_cmp(&kev, kevent_get(kqfd));
/* We filled twice, but drain once. Edge-triggered would not generate
additional events.
*/
kevent_socket_drain();
test_no_kevents();
kevent_socket_drain();
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DELETE, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
success();
}
void
test_kevent_socket_disable_and_enable(void)
{
const char *test_id = "kevent(EVFILT_READ, EV_DISABLE)";
struct kevent kev;
test_begin(test_id);
/* Add an event, then disable it. */
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DISABLE, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
kevent_socket_fill();
test_no_kevents();
/* Re-enable the knote, then see if an event is generated */
kev.flags = EV_ENABLE;
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
kev.flags = EV_ADD;
kev.data = 1;
kevent_cmp(&kev, kevent_get(kqfd));
kevent_socket_drain();
kev.flags = EV_DELETE;
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
success();
}
void
test_kevent_socket_del(void)
{
const char *test_id = "kevent(EVFILT_READ, EV_DELETE)";
struct kevent kev;
test_begin(test_id);
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DELETE, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
kevent_socket_fill();
test_no_kevents();
kevent_socket_drain();
success();
}
void
test_kevent_socket_oneshot(void)
{
const char *test_id = "kevent(EVFILT_READ, EV_ONESHOT)";
struct kevent kev;
test_begin(test_id);
/* Re-add the watch and make sure no events are pending */
puts("-- re-adding knote");
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD | EV_ONESHOT, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
test_no_kevents();
puts("-- getting one event");
kevent_socket_fill();
kev.data = 1;
kevent_cmp(&kev, kevent_get(kqfd));
puts("-- checking knote disabled");
test_no_kevents();
/* Try to delete the knote, it should already be deleted */
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DELETE, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) == 0)
err(1, "%s", test_id);
kevent_socket_drain();
success();
}
#if HAVE_EV_DISPATCH
void
test_kevent_socket_dispatch(void)
{
const char *test_id = "kevent(EVFILT_READ, EV_DISPATCH)";
test_begin(test_id);
struct kevent kev;
/* Re-add the watch and make sure no events are pending */
puts("-- re-adding knote");
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD | EV_DISPATCH, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
test_no_kevents();
/* The event will occur only once, even though EV_CLEAR is not
specified. */
kevent_socket_fill();
kev.data = 1;
kevent_cmp(&kev, kevent_get(kqfd));
test_no_kevents();
/* Since the knote is disabled, the EV_DELETE operation succeeds. */
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DELETE, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
kevent_socket_drain();
success();
}
#endif /* HAVE_EV_DISPATCH */
#if BROKEN
void
test_kevent_socket_lowat(void)
{
const char *test_id = "kevent(EVFILT_READ, NOTE_LOWAT)";
struct kevent kev;
test_begin(test_id);
/* Re-add the watch and make sure no events are pending */
puts("-- re-adding knote, setting low watermark to 2 bytes");
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD | EV_ONESHOT, NOTE_LOWAT, 2, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
test_no_kevents();
puts("-- checking that one byte does not trigger an event..");
kevent_socket_fill();
test_no_kevents();
puts("-- checking that two bytes triggers an event..");
kevent_socket_fill();
if (kevent(kqfd, NULL, 0, &kev, 1, NULL) != 1)
err(1, "%s", test_id);
KEV_CMP(kev, sockfd[0], EVFILT_READ, 0);
test_no_kevents();
kevent_socket_drain();
kevent_socket_drain();
success();
}
#endif
void
test_kevent_socket_eof(void)
{
const char *test_id = "kevent(EVFILT_READ, EV_EOF)";
struct kevent kev;
test_begin(test_id);
/* Re-add the watch and make sure no events are pending */
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_ADD, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
test_no_kevents();
if (close(sockfd[1]) < 0)
err(1, "close(2)");
kev.flags |= EV_EOF;
kevent_cmp(&kev, kevent_get(kqfd));
/* Delete the watch */
EV_SET(&kev, sockfd[0], EVFILT_READ, EV_DELETE, 0, 0, &sockfd[0]);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
success();
}
void
test_evfilt_read()
{
/* Create a connected pair of full-duplex sockets for testing socket events */
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sockfd) < 0)
abort();
kqfd = kqueue();
test_kevent_socket_add();
test_kevent_socket_del();
test_kevent_socket_get();
test_kevent_socket_disable_and_enable();
test_kevent_socket_oneshot();
test_kevent_socket_clear();
#if HAVE_EV_DISPATCH
test_kevent_socket_dispatch();
#endif
test_kevent_socket_eof();
close(kqfd);
}
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