99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
/*
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* File: priority1.c
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*
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* Test Synopsis:
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* - Test thread priority explicit setting using thread attribute.
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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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assert(policy == SCHED_FIFO);
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return (void *)(size_t)param.sched_priority;
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}
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// Windows only supports 7 thread priority levels, which we map onto the 32
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// required by POSIX. The exact mapping also depends on the overall process
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// priority class. So only a subset of values will be returned exactly by
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// pthread_getschedparam() after pthread_setschedparam().
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int doable_pri(int pri)
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{
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switch (GetPriorityClass(GetCurrentProcess()))
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{
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case BELOW_NORMAL_PRIORITY_CLASS:
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return (pri == 2) || (pri == 8) || (pri == 10) || (pri == 12) || (pri == 14) || (pri == 16) || (pri == 30);
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case NORMAL_PRIORITY_CLASS:
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return (pri == 2) || (pri == 12) || (pri == 14) || (pri == 16) || (pri == 18) || (pri == 20) || (pri == 30);
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}
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return TRUE;
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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_attr_t attr;
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void * result = NULL;
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struct sched_param param;
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int maxPrio = sched_get_priority_max(SCHED_FIFO);
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int minPrio = sched_get_priority_min(SCHED_FIFO);
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assert((maxPrio - minPrio) >= 31);
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assert(pthread_attr_init(&attr) == 0);
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assert(pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED) == 0);
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for (param.sched_priority = minPrio;
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param.sched_priority <= maxPrio;
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param.sched_priority++)
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{
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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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if (doable_pri(param.sched_priority))
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assert((int)(size_t) result == param.sched_priority);
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}
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return 0;
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}
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