/*
reset scheduler from real-time to normal scheduling
*/
void reset_scheduler(void)
{
#ifdef _AIX_
#if HAVE_THREAD_SETSCHED
struct thrdentry64 te;
tid64_t ti;
ti = 0ULL;
if (getthrds64(getpid(), &te, sizeof(te), &ti, 1) != 1) {
DEBUG(DEBUG_ERR, ("Unable to get thread information\n"));
}
if (thread_setsched(te.ti_tid, 0, SCHED_OTHER) == -1) {
DEBUG(DEBUG_ERR, ("Unable to set scheduler to SCHED_OTHER\n"));
}
#endif
#else /* no AIX */
#if HAVE_SCHED_SETSCHEDULER
#ifndef SCHED_RESET_ON_FORK
struct sched_param p;
p.sched_priority = 0;
if (sched_setscheduler(0, SCHED_OTHER, &p) == -1) {
DEBUG(DEBUG_ERR, ("Unable to set scheduler to SCHED_OTHER\n"));
}
#endif
#endif
#endif
}
/*
if possible, make this task real time
*/
bool set_scheduler(void)
{
#ifdef _AIX_
#if HAVE_THREAD_SETSCHED
struct thrdentry64 te;
tid64_t ti;
ti = 0ULL;
if (getthrds64(getpid(), &te, sizeof(te), &ti, 1) != 1) {
DEBUG(DEBUG_ERR, ("Unable to get thread information\n"));
return false;
}
if (thread_setsched(te.ti_tid, 0, SCHED_RR) == -1) {
DEBUG(DEBUG_ERR, ("Unable to set scheduler to SCHED_RR (%s)\n",
strerror(errno)));
return false;
} else {
return true;
}
#endif
#else /* no AIX */
#if HAVE_SCHED_SETSCHEDULER
struct sched_param p;
int policy = SCHED_FIFO;
p.sched_priority = 1;
#ifdef SCHED_RESET_ON_FORK
policy |= SCHED_RESET_ON_FORK;
#endif
if (sched_setscheduler(0, policy, &p) == -1) {
DEBUG(DEBUG_CRIT,("Unable to set scheduler to SCHED_FIFO (%s)\n",
strerror(errno)));
return false;
} else {
return true;
}
#endif
#endif
DEBUG(DEBUG_CRIT,("No way to set real-time priority.\n"));
return false;
}
