/* $NetBSD: t_sched.c,v 1.6 2017/12/24 17:37:23 christos Exp $ */ /*- * Copyright (c) 2011 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jukka Ruohonen. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __RCSID("$NetBSD: t_sched.c,v 1.6 2017/12/24 17:37:23 christos Exp $"); #include /* PRI_NONE */ #include #include #include #include static void sched_priority_set(int, int); ATF_TC(sched_getparam); ATF_TC_HEAD(sched_getparam, tc) { atf_tc_set_md_var(tc, "descr", "A basic test of sched_getparam(3)"); } ATF_TC_BODY(sched_getparam, tc) { struct sched_param s1, s2; pid_t p = getpid(); /* * IEEE Std 1003.1-2008: if the supplied pid is zero, * the parameters for the calling process are returned. */ ATF_REQUIRE(sched_getparam(0, &s1) == 0); ATF_REQUIRE(sched_getparam(p, &s2) == 0); ATF_CHECK_EQ(s1.sched_priority, s2.sched_priority); /* * The behavior is undefined but should error * out in case the supplied PID is negative. */ ATF_REQUIRE(sched_getparam(-1, &s1) != 0); } ATF_TC(sched_priority); ATF_TC_HEAD(sched_priority, tc) { atf_tc_set_md_var(tc, "descr", "Test sched(3) priority ranges"); } ATF_TC_BODY(sched_priority, tc) { static const int pol[3] = { SCHED_OTHER, SCHED_FIFO, SCHED_RR }; int pmax, pmin; size_t i; /* * Test that bogus values error out. */ if (INT_MAX > SCHED_RR) ATF_REQUIRE(sched_get_priority_max(INT_MAX) != 0); if (-INT_MAX < SCHED_OTHER) ATF_REQUIRE(sched_get_priority_max(-INT_MAX) != 0); /* * Test that we have a valid range. */ for (i = 0; i < __arraycount(pol); i++) { pmax = sched_get_priority_max(pol[i]); pmin = sched_get_priority_min(pol[i]); if (pol[i] == SCHED_OTHER) { ATF_REQUIRE(pmax == PRI_NONE); ATF_REQUIRE(pmin == PRI_NONE); } else { ATF_REQUIRE(pmax != -1); ATF_REQUIRE(pmin != -1); ATF_REQUIRE(pmax > pmin); } } } static void sched_priority_set(int pri, int pol) { struct sched_param sched; sched.sched_priority = pri; ATF_REQUIRE(pri >= 0); ATF_REQUIRE(sched_setscheduler(0, pol, &sched) == 0); /* * Test that the policy was changed. */ ATF_CHECK_EQ(sched_getscheduler(0), pol); /* * And that sched_getparam(3) returns the new priority. */ sched.sched_priority = -1; ATF_REQUIRE(sched_getparam(0, &sched) == 0); ATF_CHECK_EQ(sched.sched_priority, pri); } ATF_TC(sched_setscheduler_1); ATF_TC_HEAD(sched_setscheduler_1, tc) { atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), max, RR"); atf_tc_set_md_var(tc, "require.user", "root"); } ATF_TC_BODY(sched_setscheduler_1, tc) { int pri; pri = sched_get_priority_max(SCHED_RR); sched_priority_set(pri, SCHED_RR); } ATF_TC(sched_setscheduler_2); ATF_TC_HEAD(sched_setscheduler_2, tc) { atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), min, RR"); atf_tc_set_md_var(tc, "require.user", "root"); } ATF_TC_BODY(sched_setscheduler_2, tc) { int pri; pri = sched_get_priority_min(SCHED_RR); sched_priority_set(pri, SCHED_RR); } ATF_TC(sched_setscheduler_3); ATF_TC_HEAD(sched_setscheduler_3, tc) { atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), max, FIFO"); atf_tc_set_md_var(tc, "require.user", "root"); } ATF_TC_BODY(sched_setscheduler_3, tc) { int pri; pri = sched_get_priority_max(SCHED_FIFO); sched_priority_set(pri, SCHED_FIFO); } ATF_TC(sched_setscheduler_4); ATF_TC_HEAD(sched_setscheduler_4, tc) { atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), min, FIFO"); atf_tc_set_md_var(tc, "require.user", "root"); } ATF_TC_BODY(sched_setscheduler_4, tc) { int pri; pri = sched_get_priority_min(SCHED_FIFO); sched_priority_set(pri, SCHED_FIFO); } ATF_TC(sched_rr_get_interval_1); ATF_TC_HEAD(sched_rr_get_interval_1, tc) { atf_tc_set_md_var(tc, "descr", "Test sched_rr_get_interval(3), #1" " (PR lib/44768)"); atf_tc_set_md_var(tc, "require.user", "root"); } ATF_TC_BODY(sched_rr_get_interval_1, tc) { struct timespec tv; int pri; pri = sched_get_priority_min(SCHED_RR); sched_priority_set(pri, SCHED_RR); /* * This should fail with ESRCH for invalid PID. */ ATF_REQUIRE(sched_rr_get_interval(-INT_MAX, &tv) != 0); } ATF_TC(sched_rr_get_interval_2); ATF_TC_HEAD(sched_rr_get_interval_2, tc) { atf_tc_set_md_var(tc, "descr", "Test sched_rr_get_interval(3), #2"); atf_tc_set_md_var(tc, "require.user", "root"); } ATF_TC_BODY(sched_rr_get_interval_2, tc) { struct timespec tv1, tv2; int pri; pri = sched_get_priority_min(SCHED_RR); sched_priority_set(pri, SCHED_RR); tv1.tv_sec = tv2.tv_sec = -1; tv1.tv_nsec = tv2.tv_nsec = -1; ATF_REQUIRE(sched_rr_get_interval(0, &tv1) == 0); ATF_REQUIRE(sched_rr_get_interval(getpid(), &tv2) == 0); ATF_REQUIRE(tv1.tv_sec != -1); ATF_REQUIRE(tv2.tv_sec != -1); ATF_REQUIRE(tv1.tv_nsec != -1); ATF_REQUIRE(tv2.tv_nsec != -1); ATF_REQUIRE(tv1.tv_sec == tv2.tv_sec); ATF_REQUIRE(tv1.tv_nsec == tv2.tv_nsec); } ATF_TP_ADD_TCS(tp) { ATF_TP_ADD_TC(tp, sched_getparam); ATF_TP_ADD_TC(tp, sched_priority); ATF_TP_ADD_TC(tp, sched_setscheduler_1); ATF_TP_ADD_TC(tp, sched_setscheduler_2); ATF_TP_ADD_TC(tp, sched_setscheduler_3); ATF_TP_ADD_TC(tp, sched_setscheduler_4); ATF_TP_ADD_TC(tp, sched_rr_get_interval_1); ATF_TP_ADD_TC(tp, sched_rr_get_interval_2); return atf_no_error(); }