int
BaseUI::set_thread_priority (const int policy, int priority) const
{
- struct sched_param param;
- memset (¶m, 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, ¶m);
+ return pbd_set_thread_priority (pthread_self(), policy, priority);
}
void
LIBPBD_API const char* pthread_name ();
LIBPBD_API void pthread_set_name (const char* name);
+LIBPBD_API int pbd_realtime_pthread_create (
+ const int policy, int priority, const size_t stacksize,
+ pthread_t *thread,
+ void *(*start_routine) (void *),
+ void *arg);
+
+LIBPBD_API int pbd_set_thread_priority (pthread_t, const int policy, int priority);
+
namespace PBD {
LIBPBD_API extern void notify_event_loops_about_thread_creation (pthread_t, const std::string&, int requests = 256);
LIBPBD_API extern PBD::Signal3<void,pthread_t,std::string,uint32_t> ThreadCreatedWithRequestSize;
pthread_cancel (thread);
pthread_mutex_unlock (&thread_map_lock);
}
+
+int
+pbd_realtime_pthread_create (
+ const int policy, int priority, const size_t stacksize,
+ pthread_t *thread,
+ void *(*start_routine) (void *),
+ void *arg)
+{
+ int rv;
+
+ pthread_attr_t attr;
+ struct sched_param parm;
+
+ const int p_min = sched_get_priority_min (policy);
+ const int p_max = sched_get_priority_max (policy);
+ priority += p_max;
+ if (priority > p_max) priority = p_max;
+ if (priority < p_min) priority = p_min;
+ parm.sched_priority = priority;
+
+ pthread_attr_init (&attr);
+ pthread_attr_setschedpolicy (&attr, policy);
+ pthread_attr_setschedparam (&attr, &parm);
+ pthread_attr_setscope (&attr, PTHREAD_SCOPE_SYSTEM);
+ pthread_attr_setinheritsched (&attr, PTHREAD_EXPLICIT_SCHED);
+ pthread_attr_setstacksize (&attr, stacksize);
+ rv = pthread_create (thread, &attr, start_routine, arg);
+ pthread_attr_destroy (&attr);
+ return rv;
+}
+
+int
+pbd_set_thread_priority (pthread_t thread, const int policy, int priority)
+{
+ struct sched_param param;
+ memset (¶m, 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; // BaseUI backwards compat.
+ }
+
+ 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 (thread, SCHED_FIFO, ¶m);
+}