1 /* $NetBSD: t_getrusage.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jukka Ruohonen. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 #include <sys/cdefs.h> 32 __RCSID("$NetBSD: t_getrusage.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $"); 33 34 #include <sys/resource.h> 35 #include <sys/time.h> 36 37 #include <atf-c.h> 38 #include <errno.h> 39 #include <limits.h> 40 #include <signal.h> 41 #include <string.h> 42 43 static void work(void); 44 static void sighandler(int); 45 46 static const size_t maxiter = 2000; 47 48 static void 49 sighandler(int signo) 50 { 51 /* Nothing. */ 52 } 53 54 static void 55 work(void) 56 { 57 size_t n = UINT16_MAX * 10; 58 59 while (n > 0) { 60 asm volatile("nop"); /* Do something. */ 61 n--; 62 } 63 } 64 65 ATF_TC(getrusage_err); 66 ATF_TC_HEAD(getrusage_err, tc) 67 { 68 atf_tc_set_md_var(tc, "descr", "Test error conditions"); 69 } 70 71 ATF_TC_BODY(getrusage_err, tc) 72 { 73 struct rusage ru; 74 75 errno = 0; 76 77 ATF_REQUIRE(getrusage(INT_MAX, &ru) != 0); 78 ATF_REQUIRE(errno == EINVAL); 79 80 errno = 0; 81 82 ATF_REQUIRE(getrusage(RUSAGE_SELF, (void *)0) != 0); 83 ATF_REQUIRE(errno == EFAULT); 84 } 85 86 ATF_TC(getrusage_sig); 87 ATF_TC_HEAD(getrusage_sig, tc) 88 { 89 atf_tc_set_md_var(tc, "descr", "Test signal count with getrusage(2)"); 90 } 91 92 ATF_TC_BODY(getrusage_sig, tc) 93 { 94 struct rusage ru; 95 const long n = 5; 96 int i; 97 98 /* 99 * Test that signals are recorded. 100 */ 101 ATF_REQUIRE(signal(SIGUSR1, sighandler) != SIG_ERR); 102 103 for (i = 0; i < n; i++) 104 ATF_REQUIRE(raise(SIGUSR1) == 0); 105 106 (void)memset(&ru, 0, sizeof(struct rusage)); 107 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 108 109 if (n != ru.ru_nsignals) 110 atf_tc_fail("getrusage(2) did not record signals"); 111 } 112 113 ATF_TC(getrusage_utime_back); 114 ATF_TC_HEAD(getrusage_utime_back, tc) 115 { 116 atf_tc_set_md_var(tc, "descr", "Test bogus values from getrusage(2)"); 117 } 118 119 ATF_TC_BODY(getrusage_utime_back, tc) 120 { 121 struct rusage ru1, ru2; 122 size_t i; 123 124 /* 125 * Test that two consecutive calls are sane. 126 */ 127 atf_tc_expect_fail("PR kern/30115"); 128 129 for (i = 0; i < maxiter; i++) { 130 131 (void)memset(&ru1, 0, sizeof(struct rusage)); 132 (void)memset(&ru2, 0, sizeof(struct rusage)); 133 134 work(); 135 136 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru1) == 0); 137 138 work(); 139 140 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru2) == 0); 141 142 if (timercmp(&ru2.ru_utime, &ru1.ru_utime, <) != 0) 143 atf_tc_fail("user time went backwards"); 144 } 145 146 atf_tc_fail("anticipated error did not occur"); 147 } 148 149 ATF_TC(getrusage_utime_zero); 150 ATF_TC_HEAD(getrusage_utime_zero, tc) 151 { 152 atf_tc_set_md_var(tc, "descr", "Test zero utime from getrusage(2)"); 153 } 154 155 ATF_TC_BODY(getrusage_utime_zero, tc) 156 { 157 struct rusage ru; 158 size_t i; 159 160 /* 161 * Test that getrusage(2) does not return 162 * zero user time for the calling process. 163 * 164 * See also (duplicate) PR port-amd64/41734. 165 */ 166 atf_tc_expect_fail("PR kern/30115"); 167 168 for (i = 0; i < maxiter; i++) { 169 170 work(); 171 172 (void)memset(&ru, 0, sizeof(struct rusage)); 173 174 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 175 176 if (ru.ru_utime.tv_sec == 0 && ru.ru_utime.tv_usec == 0) 177 atf_tc_fail("zero user time from getrusage(2)"); 178 } 179 180 atf_tc_fail("anticipated error did not occur"); 181 } 182 183 ATF_TP_ADD_TCS(tp) 184 { 185 186 ATF_TP_ADD_TC(tp, getrusage_err); 187 ATF_TP_ADD_TC(tp, getrusage_sig); 188 ATF_TP_ADD_TC(tp, getrusage_utime_back); 189 ATF_TP_ADD_TC(tp, getrusage_utime_zero); 190 191 return atf_no_error(); 192 } 193