Fix LV2 Preset path for window

[ardour.git] / libs / pbd / base_ui.cc

diff --git a/libs/pbd/base_ui.cc b/libs/pbd/base_ui.cc
index c56fb8f4fe33eeaa1a5fe15fbcb0f259a858ca15..b04b755ec8f65f91938834533c94b5b1609e81ab 100644 (file)
--- a/libs/pbd/base_ui.cc
+++ b/libs/pbd/base_ui.cc
@@ -28,6 +28,9 @@
 #include <cerrno>
 #include <cstring>
 
+#include <pthread.h>
+#include <sched.h>
+
 #include "pbd/base_ui.h"
 #include "pbd/debug.h"
 #include "pbd/pthread_utils.h"
@@ -35,7 +38,7 @@
 #include "pbd/compose.h"
 #include "pbd/failed_constructor.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 #include "pbd/debug.h"
 
@@ -76,6 +79,35 @@ BaseUI::new_request_type ()
        return rt;
 }
 
+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);
+}
+
 void
 BaseUI::main_thread ()
 {
@@ -137,7 +169,7 @@ BaseUI::request_handler (Glib::IOCondition ioc)
 
                /* handle requests */
 
-               DEBUG_TRACE (DEBUG::EventLoop, "BaseUI::request_handler\n");
+               DEBUG_TRACE (DEBUG::EventLoop, string_compose ("%1: request handler\n", event_loop_name()));
                handle_ui_requests ();
        }
 
@@ -147,7 +179,7 @@ BaseUI::request_handler (Glib::IOCondition ioc)
 void
 BaseUI::signal_new_request ()
 {
-       DEBUG_TRACE (DEBUG::EventLoop, "BaseUI::signal_new_request\n");
+       DEBUG_TRACE (DEBUG::EventLoop, string_compose ("%1: signal_new_request\n", event_loop_name()));
        request_channel.wakeup ();
 }
 
@@ -157,6 +189,6 @@ BaseUI::signal_new_request ()
 void
 BaseUI::attach_request_source ()
 {
-       DEBUG_TRACE (DEBUG::EventLoop, "BaseUI::attach_request_source\n");
+       DEBUG_TRACE (DEBUG::EventLoop, string_compose ("%1: attach request source\n", event_loop_name()));
        request_channel.attach (m_context);
 }