1 /* $NetBSD: t_sched.c,v 1.6 2017/12/24 17:37:23 christos 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_sched.c,v 1.6 2017/12/24 17:37:23 christos Exp $"); 33 34 #include <sys/param.h> /* PRI_NONE */ 35 #include <sched.h> 36 #include <limits.h> 37 #include <unistd.h> 38 39 #include <atf-c.h> 40 41 static void sched_priority_set(int, int); 42 43 ATF_TC(sched_getparam); 44 ATF_TC_HEAD(sched_getparam, tc) 45 { 46 atf_tc_set_md_var(tc, "descr", "A basic test of sched_getparam(3)"); 47 } 48 49 ATF_TC_BODY(sched_getparam, tc) 50 { 51 struct sched_param s1, s2; 52 pid_t p = getpid(); 53 54 /* 55 * IEEE Std 1003.1-2008: if the supplied pid is zero, 56 * the parameters for the calling process are returned. 57 */ 58 ATF_REQUIRE(sched_getparam(0, &s1) == 0); 59 ATF_REQUIRE(sched_getparam(p, &s2) == 0); 60 61 ATF_CHECK_EQ(s1.sched_priority, s2.sched_priority); 62 63 /* 64 * The behavior is undefined but should error 65 * out in case the supplied PID is negative. 66 */ 67 ATF_REQUIRE(sched_getparam(-1, &s1) != 0); 68 } 69 70 ATF_TC(sched_priority); 71 ATF_TC_HEAD(sched_priority, tc) 72 { 73 atf_tc_set_md_var(tc, "descr", "Test sched(3) priority ranges"); 74 } 75 76 ATF_TC_BODY(sched_priority, tc) 77 { 78 static const int pol[3] = { SCHED_OTHER, SCHED_FIFO, SCHED_RR }; 79 int pmax, pmin; 80 size_t i; 81 82 /* 83 * Test that bogus values error out. 84 */ 85 if (INT_MAX > SCHED_RR) 86 ATF_REQUIRE(sched_get_priority_max(INT_MAX) != 0); 87 88 if (-INT_MAX < SCHED_OTHER) 89 ATF_REQUIRE(sched_get_priority_max(-INT_MAX) != 0); 90 91 /* 92 * Test that we have a valid range. 93 */ 94 for (i = 0; i < __arraycount(pol); i++) { 95 96 pmax = sched_get_priority_max(pol[i]); 97 pmin = sched_get_priority_min(pol[i]); 98 if (pol[i] == SCHED_OTHER) { 99 ATF_REQUIRE(pmax == PRI_NONE); 100 ATF_REQUIRE(pmin == PRI_NONE); 101 } else { 102 ATF_REQUIRE(pmax != -1); 103 ATF_REQUIRE(pmin != -1); 104 ATF_REQUIRE(pmax > pmin); 105 } 106 } 107 } 108 109 static void 110 sched_priority_set(int pri, int pol) 111 { 112 struct sched_param sched; 113 114 sched.sched_priority = pri; 115 116 ATF_REQUIRE(pri >= 0); 117 ATF_REQUIRE(sched_setscheduler(0, pol, &sched) == 0); 118 119 /* 120 * Test that the policy was changed. 121 */ 122 ATF_CHECK_EQ(sched_getscheduler(0), pol); 123 124 /* 125 * And that sched_getparam(3) returns the new priority. 126 */ 127 sched.sched_priority = -1; 128 129 ATF_REQUIRE(sched_getparam(0, &sched) == 0); 130 ATF_CHECK_EQ(sched.sched_priority, pri); 131 } 132 133 ATF_TC(sched_setscheduler_1); 134 ATF_TC_HEAD(sched_setscheduler_1, tc) 135 { 136 atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), max, RR"); 137 atf_tc_set_md_var(tc, "require.user", "root"); 138 } 139 140 ATF_TC_BODY(sched_setscheduler_1, tc) 141 { 142 int pri; 143 144 pri = sched_get_priority_max(SCHED_RR); 145 sched_priority_set(pri, SCHED_RR); 146 } 147 148 ATF_TC(sched_setscheduler_2); 149 ATF_TC_HEAD(sched_setscheduler_2, tc) 150 { 151 atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), min, RR"); 152 atf_tc_set_md_var(tc, "require.user", "root"); 153 } 154 155 ATF_TC_BODY(sched_setscheduler_2, tc) 156 { 157 int pri; 158 159 pri = sched_get_priority_min(SCHED_RR); 160 sched_priority_set(pri, SCHED_RR); 161 } 162 163 ATF_TC(sched_setscheduler_3); 164 ATF_TC_HEAD(sched_setscheduler_3, tc) 165 { 166 atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), max, FIFO"); 167 atf_tc_set_md_var(tc, "require.user", "root"); 168 } 169 170 ATF_TC_BODY(sched_setscheduler_3, tc) 171 { 172 int pri; 173 174 pri = sched_get_priority_max(SCHED_FIFO); 175 sched_priority_set(pri, SCHED_FIFO); 176 } 177 178 ATF_TC(sched_setscheduler_4); 179 ATF_TC_HEAD(sched_setscheduler_4, tc) 180 { 181 atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), min, FIFO"); 182 atf_tc_set_md_var(tc, "require.user", "root"); 183 } 184 185 ATF_TC_BODY(sched_setscheduler_4, tc) 186 { 187 int pri; 188 189 pri = sched_get_priority_min(SCHED_FIFO); 190 sched_priority_set(pri, SCHED_FIFO); 191 } 192 193 ATF_TC(sched_rr_get_interval_1); 194 ATF_TC_HEAD(sched_rr_get_interval_1, tc) 195 { 196 atf_tc_set_md_var(tc, "descr", "Test sched_rr_get_interval(3), #1" 197 " (PR lib/44768)"); 198 atf_tc_set_md_var(tc, "require.user", "root"); 199 } 200 201 ATF_TC_BODY(sched_rr_get_interval_1, tc) 202 { 203 struct timespec tv; 204 int pri; 205 206 pri = sched_get_priority_min(SCHED_RR); 207 sched_priority_set(pri, SCHED_RR); 208 209 /* 210 * This should fail with ESRCH for invalid PID. 211 */ 212 ATF_REQUIRE(sched_rr_get_interval(-INT_MAX, &tv) != 0); 213 } 214 215 ATF_TC(sched_rr_get_interval_2); 216 ATF_TC_HEAD(sched_rr_get_interval_2, tc) 217 { 218 atf_tc_set_md_var(tc, "descr", "Test sched_rr_get_interval(3), #2"); 219 atf_tc_set_md_var(tc, "require.user", "root"); 220 } 221 222 ATF_TC_BODY(sched_rr_get_interval_2, tc) 223 { 224 struct timespec tv1, tv2; 225 int pri; 226 227 pri = sched_get_priority_min(SCHED_RR); 228 sched_priority_set(pri, SCHED_RR); 229 230 tv1.tv_sec = tv2.tv_sec = -1; 231 tv1.tv_nsec = tv2.tv_nsec = -1; 232 233 ATF_REQUIRE(sched_rr_get_interval(0, &tv1) == 0); 234 ATF_REQUIRE(sched_rr_get_interval(getpid(), &tv2) == 0); 235 236 ATF_REQUIRE(tv1.tv_sec != -1); 237 ATF_REQUIRE(tv2.tv_sec != -1); 238 239 ATF_REQUIRE(tv1.tv_nsec != -1); 240 ATF_REQUIRE(tv2.tv_nsec != -1); 241 242 ATF_REQUIRE(tv1.tv_sec == tv2.tv_sec); 243 ATF_REQUIRE(tv1.tv_nsec == tv2.tv_nsec); 244 } 245 246 ATF_TP_ADD_TCS(tp) 247 { 248 249 ATF_TP_ADD_TC(tp, sched_getparam); 250 ATF_TP_ADD_TC(tp, sched_priority); 251 252 ATF_TP_ADD_TC(tp, sched_setscheduler_1); 253 ATF_TP_ADD_TC(tp, sched_setscheduler_2); 254 ATF_TP_ADD_TC(tp, sched_setscheduler_3); 255 ATF_TP_ADD_TC(tp, sched_setscheduler_4); 256 257 ATF_TP_ADD_TC(tp, sched_rr_get_interval_1); 258 ATF_TP_ADD_TC(tp, sched_rr_get_interval_2); 259 260 return atf_no_error(); 261 } 262
Indexes created Mon Sep 29 21:09:56 GMT 2025