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