1 /* $NetBSD: t_getrusage.c,v 1.2 2011/08/22 00:33:16 dholland 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 1.2 2011/08/22 00:33:16 dholland 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 <stdint.h> 42 #include <string.h> 43 44 static void work(void); 45 static void sighandler(int); 46 47 static const size_t maxiter = 2000; 48 49 static void 50 sighandler(int signo) 51 { 52 /* Nothing. */ 53 } 54 55 static void 56 work(void) 57 { 58 size_t n = UINT16_MAX * 10; 59 60 while (n > 0) { 61 asm volatile("nop"); /* Do something. */ 62 n--; 63 } 64 } 65 66 ATF_TC(getrusage_err); 67 ATF_TC_HEAD(getrusage_err, tc) 68 { 69 atf_tc_set_md_var(tc, "descr", "Test error conditions"); 70 } 71 72 ATF_TC_BODY(getrusage_err, tc) 73 { 74 struct rusage ru; 75 76 errno = 0; 77 78 ATF_REQUIRE(getrusage(INT_MAX, &ru) != 0); 79 ATF_REQUIRE(errno == EINVAL); 80 81 errno = 0; 82 83 ATF_REQUIRE(getrusage(RUSAGE_SELF, (void *)0) != 0); 84 ATF_REQUIRE(errno == EFAULT); 85 } 86 87 ATF_TC(getrusage_sig); 88 ATF_TC_HEAD(getrusage_sig, tc) 89 { 90 atf_tc_set_md_var(tc, "descr", "Test signal count with getrusage(2)"); 91 } 92 93 ATF_TC_BODY(getrusage_sig, tc) 94 { 95 struct rusage ru; 96 const long n = 5; 97 int i; 98 99 /* 100 * Test that signals are recorded. 101 */ 102 ATF_REQUIRE(signal(SIGUSR1, sighandler) != SIG_ERR); 103 104 for (i = 0; i < n; i++) 105 ATF_REQUIRE(raise(SIGUSR1) == 0); 106 107 (void)memset(&ru, 0, sizeof(struct rusage)); 108 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 109 110 if (n != ru.ru_nsignals) 111 atf_tc_fail("getrusage(2) did not record signals"); 112 } 113 114 ATF_TC(getrusage_utime_back); 115 ATF_TC_HEAD(getrusage_utime_back, tc) 116 { 117 atf_tc_set_md_var(tc, "descr", "Test bogus values from getrusage(2)"); 118 } 119 120 ATF_TC_BODY(getrusage_utime_back, tc) 121 { 122 struct rusage ru1, ru2; 123 size_t i; 124 125 /* 126 * Test that two consecutive calls are sane. 127 */ 128 atf_tc_expect_fail("PR kern/30115"); 129 130 for (i = 0; i < maxiter; i++) { 131 132 (void)memset(&ru1, 0, sizeof(struct rusage)); 133 (void)memset(&ru2, 0, sizeof(struct rusage)); 134 135 work(); 136 137 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru1) == 0); 138 139 work(); 140 141 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru2) == 0); 142 143 if (timercmp(&ru2.ru_utime, &ru1.ru_utime, <) != 0) 144 atf_tc_fail("user time went backwards"); 145 } 146 147 atf_tc_fail("anticipated error did not occur"); 148 } 149 150 ATF_TC(getrusage_utime_zero); 151 ATF_TC_HEAD(getrusage_utime_zero, tc) 152 { 153 atf_tc_set_md_var(tc, "descr", "Test zero utime from getrusage(2)"); 154 } 155 156 ATF_TC_BODY(getrusage_utime_zero, tc) 157 { 158 struct rusage ru; 159 size_t i; 160 161 /* 162 * Test that getrusage(2) does not return 163 * zero user time for the calling process. 164 * 165 * See also (duplicate) PR port-amd64/41734. 166 */ 167 atf_tc_expect_fail("PR kern/30115"); 168 169 for (i = 0; i < maxiter; i++) { 170 171 work(); 172 173 (void)memset(&ru, 0, sizeof(struct rusage)); 174 175 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 176 177 if (ru.ru_utime.tv_sec == 0 && ru.ru_utime.tv_usec == 0) 178 atf_tc_fail("zero user time from getrusage(2)"); 179 } 180 181 atf_tc_fail("anticipated error did not occur"); 182 } 183 184 ATF_TP_ADD_TCS(tp) 185 { 186 187 ATF_TP_ADD_TC(tp, getrusage_err); 188 ATF_TP_ADD_TC(tp, getrusage_sig); 189 ATF_TP_ADD_TC(tp, getrusage_utime_back); 190 ATF_TP_ADD_TC(tp, getrusage_utime_zero); 191 192 return atf_no_error(); 193 } 194