1*11be35a1SLionel Sambuc /* $NetBSD: t_lwp_ctl.c,v 1.2 2012/03/18 06:20:51 jruoho Exp $ */
2*11be35a1SLionel Sambuc
3*11be35a1SLionel Sambuc /*-
4*11be35a1SLionel Sambuc * Copyright (c) 2008 The NetBSD Foundation, Inc.
5*11be35a1SLionel Sambuc * All rights reserved.
6*11be35a1SLionel Sambuc *
7*11be35a1SLionel Sambuc * Redistribution and use in source and binary forms, with or without
8*11be35a1SLionel Sambuc * modification, are permitted provided that the following conditions
9*11be35a1SLionel Sambuc * are met:
10*11be35a1SLionel Sambuc * 1. Redistributions of source code must retain the above copyright
11*11be35a1SLionel Sambuc * notice, this list of conditions and the following disclaimer.
12*11be35a1SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
13*11be35a1SLionel Sambuc * notice, this list of conditions and the following disclaimer in the
14*11be35a1SLionel Sambuc * documentation and/or other materials provided with the distribution.
15*11be35a1SLionel Sambuc *
16*11be35a1SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17*11be35a1SLionel Sambuc * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18*11be35a1SLionel Sambuc * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19*11be35a1SLionel Sambuc * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20*11be35a1SLionel Sambuc * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21*11be35a1SLionel Sambuc * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22*11be35a1SLionel Sambuc * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23*11be35a1SLionel Sambuc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24*11be35a1SLionel Sambuc * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25*11be35a1SLionel Sambuc * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26*11be35a1SLionel Sambuc * POSSIBILITY OF SUCH DAMAGE.
27*11be35a1SLionel Sambuc */
28*11be35a1SLionel Sambuc
29*11be35a1SLionel Sambuc #include <sys/cdefs.h>
30*11be35a1SLionel Sambuc __COPYRIGHT("@(#) Copyright (c) 2008\
31*11be35a1SLionel Sambuc The NetBSD Foundation, inc. All rights reserved.");
32*11be35a1SLionel Sambuc __RCSID("$NetBSD: t_lwp_ctl.c,v 1.2 2012/03/18 06:20:51 jruoho Exp $");
33*11be35a1SLionel Sambuc
34*11be35a1SLionel Sambuc #include <sys/lwpctl.h>
35*11be35a1SLionel Sambuc
36*11be35a1SLionel Sambuc #include <atf-c.h>
37*11be35a1SLionel Sambuc #include <lwp.h>
38*11be35a1SLionel Sambuc #include <stdio.h>
39*11be35a1SLionel Sambuc #include <time.h>
40*11be35a1SLionel Sambuc
41*11be35a1SLionel Sambuc ATF_TC(lwpctl_counter);
ATF_TC_HEAD(lwpctl_counter,tc)42*11be35a1SLionel Sambuc ATF_TC_HEAD(lwpctl_counter, tc)
43*11be35a1SLionel Sambuc {
44*11be35a1SLionel Sambuc atf_tc_set_md_var(tc, "descr", "Checks lwpctl preemption counter");
45*11be35a1SLionel Sambuc }
46*11be35a1SLionel Sambuc
ATF_TC_BODY(lwpctl_counter,tc)47*11be35a1SLionel Sambuc ATF_TC_BODY(lwpctl_counter, tc)
48*11be35a1SLionel Sambuc {
49*11be35a1SLionel Sambuc lwpctl_t *lc;
50*11be35a1SLionel Sambuc struct timespec ts;
51*11be35a1SLionel Sambuc int ctr1, ctr2;
52*11be35a1SLionel Sambuc
53*11be35a1SLionel Sambuc ATF_REQUIRE(_lwp_ctl(LWPCTL_FEATURE_PCTR, &lc) == 0);
54*11be35a1SLionel Sambuc
55*11be35a1SLionel Sambuc /* Ensure that preemption is reported. */
56*11be35a1SLionel Sambuc ctr1 = lc->lc_pctr;
57*11be35a1SLionel Sambuc (void)printf("pctr = %d\n", ctr1);
58*11be35a1SLionel Sambuc ts.tv_nsec = 10*1000000;
59*11be35a1SLionel Sambuc ts.tv_sec = 0;
60*11be35a1SLionel Sambuc
61*11be35a1SLionel Sambuc ATF_REQUIRE(nanosleep(&ts, 0) != -1);
62*11be35a1SLionel Sambuc
63*11be35a1SLionel Sambuc ctr2 = lc->lc_pctr;
64*11be35a1SLionel Sambuc (void)printf("pctr = %d\n", ctr2);
65*11be35a1SLionel Sambuc
66*11be35a1SLionel Sambuc ATF_REQUIRE_MSG(ctr1 != ctr2, "counters match");
67*11be35a1SLionel Sambuc }
68*11be35a1SLionel Sambuc
ATF_TP_ADD_TCS(tp)69*11be35a1SLionel Sambuc ATF_TP_ADD_TCS(tp)
70*11be35a1SLionel Sambuc {
71*11be35a1SLionel Sambuc ATF_TP_ADD_TC(tp, lwpctl_counter);
72*11be35a1SLionel Sambuc
73*11be35a1SLionel Sambuc return atf_no_error();
74*11be35a1SLionel Sambuc }
75