1 /* $NetBSD: t_getrusage.c,v 1.3 2014/09/03 19:24:12 matt 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 1.3 2014/09/03 19:24:12 matt 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 #ifdef __or1k__ 62 asm volatile("l.nop"); /* Do something. */ 63 #else 64 asm volatile("nop"); /* Do something. */ 65 #endif 66 n--; 67 } 68 } 69 70 ATF_TC(getrusage_err); 71 ATF_TC_HEAD(getrusage_err, tc) 72 { 73 atf_tc_set_md_var(tc, "descr", "Test error conditions"); 74 } 75 76 ATF_TC_BODY(getrusage_err, tc) 77 { 78 struct rusage ru; 79 80 errno = 0; 81 82 ATF_REQUIRE(getrusage(INT_MAX, &ru) != 0); 83 ATF_REQUIRE(errno == EINVAL); 84 85 errno = 0; 86 87 ATF_REQUIRE(getrusage(RUSAGE_SELF, (void *)0) != 0); 88 ATF_REQUIRE(errno == EFAULT); 89 } 90 91 ATF_TC(getrusage_sig); 92 ATF_TC_HEAD(getrusage_sig, tc) 93 { 94 atf_tc_set_md_var(tc, "descr", "Test signal count with getrusage(2)"); 95 } 96 97 ATF_TC_BODY(getrusage_sig, tc) 98 { 99 struct rusage ru; 100 const long n = 5; 101 int i; 102 103 /* 104 * Test that signals are recorded. 105 */ 106 ATF_REQUIRE(signal(SIGUSR1, sighandler) != SIG_ERR); 107 108 for (i = 0; i < n; i++) 109 ATF_REQUIRE(raise(SIGUSR1) == 0); 110 111 (void)memset(&ru, 0, sizeof(struct rusage)); 112 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 113 114 if (n != ru.ru_nsignals) 115 atf_tc_fail("getrusage(2) did not record signals"); 116 } 117 118 ATF_TC(getrusage_utime_back); 119 ATF_TC_HEAD(getrusage_utime_back, tc) 120 { 121 atf_tc_set_md_var(tc, "descr", "Test bogus values from getrusage(2)"); 122 } 123 124 ATF_TC_BODY(getrusage_utime_back, tc) 125 { 126 struct rusage ru1, ru2; 127 size_t i; 128 129 /* 130 * Test that two consecutive calls are sane. 131 */ 132 atf_tc_expect_fail("PR kern/30115"); 133 134 for (i = 0; i < maxiter; i++) { 135 136 (void)memset(&ru1, 0, sizeof(struct rusage)); 137 (void)memset(&ru2, 0, sizeof(struct rusage)); 138 139 work(); 140 141 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru1) == 0); 142 143 work(); 144 145 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru2) == 0); 146 147 if (timercmp(&ru2.ru_utime, &ru1.ru_utime, <) != 0) 148 atf_tc_fail("user time went backwards"); 149 } 150 151 atf_tc_fail("anticipated error did not occur"); 152 } 153 154 ATF_TC(getrusage_utime_zero); 155 ATF_TC_HEAD(getrusage_utime_zero, tc) 156 { 157 atf_tc_set_md_var(tc, "descr", "Test zero utime from getrusage(2)"); 158 } 159 160 ATF_TC_BODY(getrusage_utime_zero, tc) 161 { 162 struct rusage ru; 163 size_t i; 164 165 /* 166 * Test that getrusage(2) does not return 167 * zero user time for the calling process. 168 * 169 * See also (duplicate) PR port-amd64/41734. 170 */ 171 atf_tc_expect_fail("PR kern/30115"); 172 173 for (i = 0; i < maxiter; i++) { 174 175 work(); 176 177 (void)memset(&ru, 0, sizeof(struct rusage)); 178 179 ATF_REQUIRE(getrusage(RUSAGE_SELF, &ru) == 0); 180 181 if (ru.ru_utime.tv_sec == 0 && ru.ru_utime.tv_usec == 0) 182 atf_tc_fail("zero user time from getrusage(2)"); 183 } 184 185 atf_tc_fail("anticipated error did not occur"); 186 } 187 188 ATF_TP_ADD_TCS(tp) 189 { 190 191 ATF_TP_ADD_TC(tp, getrusage_err); 192 ATF_TP_ADD_TC(tp, getrusage_sig); 193 ATF_TP_ADD_TC(tp, getrusage_utime_back); 194 ATF_TP_ADD_TC(tp, getrusage_utime_zero); 195 196 return atf_no_error(); 197 } 198