1/* $NetBSD: t_lwp_ctl.c,v 1.1 2012/03/17 17:23:34 jruoho Exp $ */
2
3/*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__COPYRIGHT("@(#) Copyright (c) 2008\
31 The NetBSD Foundation, inc. All rights reserved.");
32__RCSID("$NetBSD: t_lwp_ctl.c,v 1.1 2012/03/17 17:23:34 jruoho Exp $");
33
34#include <sys/lwpctl.h>
35
36#include <atf-c.h>
37#include <lwp.h>
38#include <stdio.h>
39#include <time.h>
40
41ATF_TC(lwpctl_counter);
42ATF_TC_HEAD(lwpctl_counter, tc)
43{
44	atf_tc_set_md_var(tc, "descr", "Checks lwpctl preemption counter");
45}
46
47ATF_TC_BODY(lwpctl_counter, tc)
48{
49	lwpctl_t *lc;
50	struct timespec ts;
51	int ctr1, ctr2;
52
53	ATF_REQUIRE(_lwp_ctl(LWPCTL_FEATURE_PCTR, &lc) == 0);
54
55	/* Ensure that preemption is reported. */
56	ctr1 = lc->lc_pctr;
57	(void)printf("pctr = %d\n", ctr1);
58	ts.tv_nsec = 10*1000000;
59	ts.tv_sec = 0;
60
61	ATF_REQUIRE(nanosleep(&ts, 0) != -1);
62
63	ctr2 = lc->lc_pctr;
64	(void)printf("pctr = %d\n", ctr2);
65
66	ATF_REQUIRE_MSG(ctr1 != ctr2, "counters match");
67}
68
69ATF_TP_ADD_TCS(tp)
70{
71	ATF_TP_ADD_TC(tp, lwpctl_counter);
72
73	return atf_no_error();
74}
75