100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/*
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* File: inherit1.c
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*
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* Test Synopsis:
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* - Test thread priority inheritance.
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*
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* Test Method (Validation or Falsification):
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* -
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*
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* Requirements Tested:
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* -
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*
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* Features Tested:
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* -
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*
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* Cases Tested:
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* -
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*
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* Description:
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* -
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*
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* Environment:
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* -
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*
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* Input:
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* - None.
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*
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* Output:
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* - File name, Line number, and failed expression on failure.
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* - No output on success.
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*
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* Assumptions:
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* -
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*
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* Pass Criteria:
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* - Process returns zero exit status.
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*
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* Fail Criteria:
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* - Process returns non-zero exit status.
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*/
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#include "test.h"
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void * func(void * arg)
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{
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int policy;
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struct sched_param param;
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assert(pthread_getschedparam(pthread_self(), &policy, ¶m) == 0);
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return (void *) (size_t)param.sched_priority;
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}
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int
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main()
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{
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pthread_t t;
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pthread_t mainThread = pthread_self();
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pthread_attr_t attr;
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void * result = NULL;
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struct sched_param param;
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struct sched_param mainParam;
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int maxPrio;
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int minPrio;
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int prio;
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int policy;
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int inheritsched = -1;
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assert((maxPrio = sched_get_priority_max(SCHED_FIFO)) != -1);
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assert((minPrio = sched_get_priority_min(SCHED_FIFO)) != -1);
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assert(pthread_attr_init(&attr) == 0);
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assert(pthread_attr_setinheritsched(&attr, PTHREAD_INHERIT_SCHED) == 0);
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assert(pthread_attr_getinheritsched(&attr, &inheritsched) == 0);
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assert(inheritsched == PTHREAD_INHERIT_SCHED);
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for (prio = minPrio; prio < maxPrio; prio++)
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{
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mainParam.sched_priority = prio;
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/* Change the main thread priority */
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assert(pthread_setschedparam(mainThread, SCHED_FIFO, &mainParam) == 0);
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assert(pthread_getschedparam(mainThread, &policy, &mainParam) == 0);
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assert(policy == SCHED_FIFO);
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assert(mainParam.sched_priority == prio);
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for (param.sched_priority = prio;
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param.sched_priority <= maxPrio;
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param.sched_priority++)
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{
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/* The new thread create should ignore this new priority */
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assert(pthread_attr_setschedparam(&attr, ¶m) == 0);
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assert(pthread_create(&t, &attr, func, NULL) == 0);
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pthread_join(t, &result);
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assert((int)(size_t) result == mainParam.sched_priority);
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}
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}
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return 0;
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}
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