1 /* 2 * Copyright (c) 2004, Intel Corporation. All rights reserved. 3 * Created by: crystal.xiong REMOVE-THIS AT intel DOT com 4 * This file is licensed under the GPL license. For the full content 5 * of this license, see the COPYING file at the top level of this 6 * source tree. 7 8 * Test pthread_attr_setinheritsched() 9 * 10 * Steps: 11 * 1. Initialize pthread_attr_t object (attr) 12 * 2. Set schedule policy (policy) in attr to SCHED_FIFO 13 * 3. Set inheritsched to PTHREAD_EXPLICIT_SCHED in attr 14 * 4. Call pthread_create with attr 15 * 5. Call pthread_getschedparam in the created thread and get the 16 * policy value(new_policy) 17 * 6. Compare new_policy with SCHED_OTHER. SCHED_OTHER is the 18 * default policy value in the creating thread. if new_policy is 19 * equal to SCHED_OTHER, the case fails. 20 * 21 * - adam.li (at) intel.com: 2004-04-30 22 * add code pthread_attr_setschedparam(). Otherwise pthread_create() 23 * will fail with EINVAL. And, the perror() thing is not correct. 24 */ 25 26 #include <errno.h> 27 #include <pthread.h> 28 #include <stdio.h> 29 #include <string.h> 30 #include <stdlib.h> 31 #include "posixtest.h" 32 33 #define TEST "2-2" 34 #define FUNCTION "pthread_attr_setinheritsched" 35 #define ERROR_PREFIX "unexpected error: " FUNCTION " " TEST ": " 36 37 const long int policy = SCHED_FIFO; 38 const long int old_policy = SCHED_OTHER; 39 void *thread_func(void *arg) 40 { 41 int rc; 42 int new_policy; 43 pthread_t self = pthread_self(); 44 45 struct sched_param param; 46 memset(¶m, 0, sizeof(param)); 47 48 rc = pthread_getschedparam(self, &new_policy, ¶m); 49 if (rc != 0) { 50 perror(ERROR_PREFIX "pthread_getschedparam"); 51 exit(PTS_UNRESOLVED); 52 } 53 if (new_policy == old_policy) { 54 fprintf(stderr, ERROR_PREFIX "The scheduling attribute should " 55 "not be inherited from creating thread \n"); 56 exit(PTS_FAIL); 57 } 58 pthread_exit(0); 59 return NULL; 60 } 61 62 int main(void) 63 { 64 pthread_t new_th; 65 pthread_attr_t attr; 66 int rc; 67 struct sched_param sp; 68 69 /* Initialize attr */ 70 rc = pthread_attr_init(&attr); 71 if (rc != 0) { 72 printf(ERROR_PREFIX "pthread_attr_init"); 73 exit(PTS_UNRESOLVED); 74 } 75 76 rc = pthread_attr_setschedpolicy(&attr, policy); 77 if (rc != 0) { 78 printf(ERROR_PREFIX "pthread_attr_setschedpolicy"); 79 exit(PTS_UNRESOLVED); 80 } 81 82 sp.sched_priority = 1; 83 rc = pthread_attr_setschedparam(&attr, &sp); 84 if (rc != 0) { 85 printf(ERROR_PREFIX "pthread_attr_setschedparam"); 86 exit(PTS_UNRESOLVED); 87 } 88 89 int insched = PTHREAD_EXPLICIT_SCHED; 90 rc = pthread_attr_setinheritsched(&attr, insched); 91 if (rc != 0) { 92 printf(ERROR_PREFIX "pthread_attr_setinheritsched"); 93 exit(PTS_UNRESOLVED); 94 } 95 96 rc = pthread_create(&new_th, &attr, thread_func, NULL); 97 if (rc != 0) { 98 printf("Error at pthread_create(): %s\n", strerror(rc)); 99 exit(PTS_UNRESOLVED); 100 } 101 102 rc = pthread_join(new_th, NULL); 103 if (rc != 0) { 104 printf(ERROR_PREFIX "pthread_join"); 105 exit(PTS_UNRESOLVED); 106 } 107 rc = pthread_attr_destroy(&attr); 108 if (rc != 0) { 109 printf(ERROR_PREFIX "pthread_attr_destroy"); 110 exit(PTS_UNRESOLVED); 111 } 112 printf("Test PASSED\n"); 113 return PTS_PASS; 114 } 115
