75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
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/* $NetBSD: t_lwp_ctl.c,v 1.2 2012/03/18 06:20:51 jruoho Exp $ */
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/*-
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__COPYRIGHT("@(#) Copyright (c) 2008\
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The NetBSD Foundation, inc. All rights reserved.");
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__RCSID("$NetBSD: t_lwp_ctl.c,v 1.2 2012/03/18 06:20:51 jruoho Exp $");
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#include <sys/lwpctl.h>
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#include <atf-c.h>
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#include <lwp.h>
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#include <stdio.h>
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#include <time.h>
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ATF_TC(lwpctl_counter);
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ATF_TC_HEAD(lwpctl_counter, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Checks lwpctl preemption counter");
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}
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ATF_TC_BODY(lwpctl_counter, tc)
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{
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lwpctl_t *lc;
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struct timespec ts;
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int ctr1, ctr2;
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ATF_REQUIRE(_lwp_ctl(LWPCTL_FEATURE_PCTR, &lc) == 0);
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/* Ensure that preemption is reported. */
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ctr1 = lc->lc_pctr;
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(void)printf("pctr = %d\n", ctr1);
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ts.tv_nsec = 10*1000000;
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ts.tv_sec = 0;
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ATF_REQUIRE(nanosleep(&ts, 0) != -1);
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ctr2 = lc->lc_pctr;
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(void)printf("pctr = %d\n", ctr2);
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ATF_REQUIRE_MSG(ctr1 != ctr2, "counters match");
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, lwpctl_counter);
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return atf_no_error();
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}
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