130 lines
2.9 KiB
C
130 lines
2.9 KiB
C
/*
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*
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* Copyright (c) International Business Machines Corp., 2001
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* NAME
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* sched_getscheduler01.C
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*
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* DESCRIPTION
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* Testcase to check sched_getscheduler() returns correct return value
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*
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* ALGORTIHM
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* Call sched_setcheduler() to set the scheduling policy of the current
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* process. Then call sched_getscheduler() to ensure that this is same
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* as what set by the previous call to sched_setscheduler().
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*
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* Use SCHED_RR, SCHED_FIFO, SCHED_OTHER as the scheduling policies for
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* sched_setscheduler().
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*
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* USAGE: <for command-line>
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* sched_getscheduler01 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
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* where, -c n : Run n copies concurrently.
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* -f : Turn off functionality Testing.
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* -i n : Execute test n times.
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* -I x : Execute test for x seconds.
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* -P x : Pause for x seconds between iterations.
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* -t : Turn on syscall timing.
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*
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* RESTRICTION
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* Must run test as root.
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*/
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#include <errno.h>
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#include <sched.h>
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#include <stdio.h>
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#include "test.h"
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char *TCID = "sched_getscheduler01";
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int TST_TOTAL = 3;
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void setup(void);
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void cleanup(void);
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struct test_case_t {
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int prio;
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int policy;
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} TC[] = {
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/* set scheduling policy to SCHED_RR */
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{
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1, SCHED_RR},
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/* set scheduling policy to SCHED_OTHER */
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{
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0, SCHED_OTHER},
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/* set scheduling policy to SCHED_FIFO */
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{
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1, SCHED_FIFO}
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};
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int main(int ac, char **av)
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{
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int lc;
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int i;
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struct sched_param param;
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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tst_count = 0;
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for (i = 0; i < TST_TOTAL; i++) {
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param.sched_priority = TC[i].prio;
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if (sched_setscheduler(0, TC[i].policy, ¶m) == -1)
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tst_brkm(TBROK, cleanup,
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"sched_setscheduler failed");
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TEST(sched_getscheduler(0));
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if (TEST_RETURN == -1) {
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tst_resm(TFAIL, "call failed unexpectedly");
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continue;
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}
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if (TEST_RETURN != TC[i].policy)
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tst_resm(TFAIL,
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"policy value returned is not "
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"correct");
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else
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tst_resm(TPASS,
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"policy value returned is correct");
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}
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}
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cleanup();
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tst_exit();
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}
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void setup(void)
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{
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tst_require_root();
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tst_sig(NOFORK, DEF_HANDLER, cleanup);
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TEST_PAUSE;
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}
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void cleanup(void)
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{
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}
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