X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Faudioengine.cc;h=07a70aebc9674a171de42a63bd6ef6c8789c15ee;hb=00b703ebe8b1e65e8f50ce92c92366844fd9e351;hp=a87a5ee7d0192015a07e17c34a812d6acd255f20;hpb=95f91d9dbd5cbd801c3cb7f0c277fea94f289342;p=ardour.git

diff --git a/libs/ardour/audioengine.cc b/libs/ardour/audioengine.cc
index a87a5ee7d0..07a70aebc9 100644
--- a/libs/ardour/audioengine.cc
+++ b/libs/ardour/audioengine.cc
@@ -63,6 +63,8 @@ using namespace PBD;
 
 AudioEngine* AudioEngine::_instance = 0;
 
+static gint audioengine_thread_cnt = 1;
+
 #ifdef SILENCE_AFTER
 #define SILENCE_AFTER_SECONDS 600
 #endif
@@ -215,6 +217,26 @@ AudioEngine::process_callback (pframes_t nframes)
 		return 0;
 	}
 
+	/* The coreaudio-backend calls thread_init_callback() if
+	 * the hardware changes or pthread_self() changes.
+	 *
+	 * However there are cases when neither holds true, yet
+	 * the thread-pool changes: e.g. connect a headphone to
+	 * a shared mic/headphone jack.
+	 * It's probably related to, or caused by clocksource changes.
+	 *
+	 * For reasons yet unknown Glib::Threads::Private() can
+	 * use a different thread-private in the same pthread
+	 * (coreaudio render callback).
+	 *
+	 * Coreaudio must set something which influences
+	 * pthread_key_t uniqness or reset the key using
+	 * pthread_getspecific().
+	 */
+	if (! SessionEvent::has_per_thread_pool ()) {
+		thread_init_callback (NULL);
+	}
+
 	bool return_after_remove_check = false;
 
 	if (_measuring_latency == MeasureAudio && _mtdm) {
@@ -1204,11 +1226,11 @@ AudioEngine::thread_init_callback (void* arg)
 
 	pthread_set_name (X_("audioengine"));
 
-	SessionEvent::create_per_thread_pool (X_("AudioEngine"), 512);
-
-	PBD::notify_gui_about_thread_creation ("gui", pthread_self(), X_("AudioEngine"), 4096);
-	PBD::notify_gui_about_thread_creation ("midiui", pthread_self(), X_("AudioEngine"), 128);
+	const int thread_num = g_atomic_int_add (&audioengine_thread_cnt, 1);
+	const string thread_name = string_compose (X_("AudioEngine %1"), thread_num);
 
+	SessionEvent::create_per_thread_pool (thread_name, 512);
+	PBD::notify_event_loops_about_thread_creation (pthread_self(), thread_name, 4096);
 	AsyncMIDIPort::set_process_thread (pthread_self());
 
 	if (arg) {