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