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Add a PBD API to set pthread priority

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This commit is contained in:
Robin Gareus 2017-08-29 17:14:34 +02:00
parent f72c819035
commit 229c9584bf
3 changed files with 68 additions and 24 deletions
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25
libs/pbd/base_ui.cc
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@ -82,30 +82,7 @@ BaseUI::new_request_type ()
int
BaseUI::set_thread_priority (const int policy, int priority) const
{
struct sched_param param;
memset (&param, 0, sizeof (param));
/* POSIX requires a spread of at least 32 steps between min..max */
const int p_min = sched_get_priority_min (policy); // Linux: 1
const int p_max = sched_get_priority_max (policy); // Linux: 99
if (priority == 0) {
/* use default. XXX this should be relative to audio (JACK) thread,
* internal backends use -20 (Audio), -21 (MIDI), -22 (compuation)
*/
priority = 7;
}
if (priority > 0) {
priority += p_min;
} else {
priority += p_max;
}
if (priority > p_max) priority = p_max;
if (priority < p_min) priority = p_min;
param.sched_priority = priority;
return pthread_setschedparam (pthread_self(), SCHED_FIFO, &param);
return pbd_set_thread_priority (pthread_self(), policy, priority);
}
void