1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License version 2. 4 * 5 * This program is distributed in the hope that it will be useful, 6 * but WITHOUT ANY WARRANTY; without even the implied warranty of 7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 8 * GNU General Public License for more details. 9 * 10 * 11 * Test that the policy and scheduling parameters remain unchanged when the 12 * sched_ss_repl_period is not greater than or equal to the 13 * sched_ss_init_budget member. 14 * 15 * Steps: 16 * 1. Get the old policy and priority. 17 * 2. Call sched_setscheduler with invalid args. 18 * 3. Check that the policy and priority have not changed. 19 * 20 * @pt:SS 21 */ 22 23 #include <errno.h> 24 #include <sched.h> 25 #include <stdio.h> 26 #include <unistd.h> 27 #include "posixtest.h" 28 29 #if defined(_POSIX_SPORADIC_SERVER)&&(_POSIX_SPORADIC_SERVER != -1) 30 31 int main(void) 32 { 33 int policy, result; 34 int old_priority, old_policy, new_policy; 35 struct sched_param param; 36 37 if (sched_getparam(getpid(), ¶m) != 0) { 38 perror("An error occurs when calling sched_getparam()"); 39 return PTS_UNRESOLVED; 40 } 41 old_priority = param.sched_priority; 42 43 old_policy = sched_getscheduler(getpid()); 44 if (old_policy == -1) { 45 perror("An error occurs when calling sched_getscheduler()"); 46 return PTS_UNRESOLVED; 47 } 48 49 /* set a sched_ss_repl_period lower than the sched_ss_init_budget */ 50 param.sched_ss_repl_period.tv_sec = 1; 51 param.sched_ss_repl_period.tv_nsec = 0; 52 53 param.sched_ss_init_budget.tv_sec = 2; 54 param.sched_ss_init_budget.tv_nsec = 0; 55 56 param.sched_priority = sched_get_priority_max(SCHED_SPORADIC); 57 58 result = sched_setscheduler(0, SCHED_SPORADIC, ¶m); 59 60 if (sched_getparam(getpid(), ¶m) != 0) { 61 perror("An error occurs when calling sched_getparam()"); 62 return PTS_UNRESOLVED; 63 } 64 65 new_policy = sched_getscheduler(getpid()); 66 if (new_policy == -1) { 67 perror("An error occurs when calling sched_getscheduler()"); 68 return PTS_UNRESOLVED; 69 } 70 71 if (old_policy == new_policy && old_priority == param.sched_priority) { 72 printf("Test PASSED\n"); 73 return PTS_PASS; 74 } 75 76 if (param.sched_priority != old_priority) { 77 printf("The param has changed\n"); 78 } 79 if (new_policy != old_policy) { 80 printf("The policy has changed\n"); 81 } 82 return PTS_FAIL; 83 84 } 85 #else 86 int main(void) 87 { 88 printf("Does not support SS (SPORADIC SERVER)\n"); 89 return PTS_UNSUPPORTED; 90 } 91 #endif 92
