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Merge Set_pthread_attr() from Basilisk II.

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gbeauche 2003-11-10 16:05:52 +00:00
parent 0260210ddf
commit 26ec1b8899
1 changed files with 24 additions and 1 deletions
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25
SheepShaver/src/Unix/main_unix.cpp
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@ -1152,7 +1152,30 @@ static void *tick_func(void *arg)
void Set_pthread_attr(pthread_attr_t *attr, int priority)
{
// nothing to do
#ifdef HAVE_PTHREADS
pthread_attr_init(attr);
#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
// Some of these only work for superuser
if (geteuid() == 0) {
pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
pthread_attr_setschedpolicy(attr, SCHED_FIFO);
struct sched_param fifo_param;
fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
sched_get_priority_max(SCHED_FIFO)) / 2 +
priority);
pthread_attr_setschedparam(attr, &fifo_param);
}
if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
#ifdef PTHREAD_SCOPE_BOUND_NP
// If system scope is not available (eg. we're not running
// with CAP_SCHED_MGT capability on an SGI box), try bound
// scope. It exposes pthread scheduling to the kernel,
// without setting realtime priority.
pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
#endif
}
#endif
#endif
}