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