Home | History | Annotate | Line # | Download | only in sys 
      1 /* $NetBSD: t_lwp_ctl.c,v 1.2 2012/03/18 06:20:51 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 1.2 2012/03/18 06:20:51 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 
     41 ATF_TC(lwpctl_counter);
     42 ATF_TC_HEAD(lwpctl_counter, tc)
     43 {
     44 	atf_tc_set_md_var(tc, "descr", "Checks lwpctl preemption counter");
     45 }
     46 
     47 ATF_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 
     69 ATF_TP_ADD_TCS(tp)
     70 {
     71 	ATF_TP_ADD_TC(tp, lwpctl_counter);
     72 
     73 	return atf_no_error();
     74 }
     75