void
initialize_thread_priority(omrthread_t thread)
{
int policy, priority, i;
struct sched_param sched_param;
/* set the default value */
thread->priority = J9THREAD_PRIORITY_NORMAL;
/* are we using priorities at all? */
if (priority_map[J9THREAD_PRIORITY_MIN] == priority_map[J9THREAD_PRIORITY_MAX]) {
return;
}
if (pthread_getschedparam(thread->handle, &policy, &sched_param)) {
/* the call failed */
return;
}
#if defined(J9_PRIORITY_MAP)
if (policy != J9_DEFAULT_SCHED) {
/* incompatible policy for our priority mapping */
return;
}
#endif
/*
* Similar story for AIX as IRIX, except AIX uses 1 instead of 0.
*
* Each thread in AIX starts out as a floating priority SCHED_OTHER thread.
* Once we assign a pthread priority it becomes a fixed priority thread with
* policy SCHED_OTHER, SCHED_FIFO, SCHED_RR or other.
*/
if (sched_param.sched_priority == 1) {
set_pthread_priority(thread->handle, thread->priority);
return;
}
#ifndef J9OS_I5 /* explicitly disabled by iSeries team */
/* on some platforms (i.e. Solaris) we get out of range values (e.g. 0) for threads with no explicitly set priority */
if (sched_param.sched_priority < sched_get_priority_min(policy) || sched_param.sched_priority > sched_get_priority_max(policy)) {
return;
}
#endif
thread->priority = omrthread_map_native_priority(sched_param.sched_priority);
}
static void set_realtime(int type, int priority){
//bound_thread_to_cpu(0);
set_pthread_priority(pthread_self(),type,priority,"Unable to set %s/%d for %d (\"%s\"). (%s)", "a gc thread");
}
