Add GUI-Idle debugging/profiling util

gtk2_ardour/ardour.menus.in

@@ -573,6 +573,9 @@
 #if 0
       <menuitem action='toggle-speaker-config'/>
 #endif
+#if 0
+      <menuitem action='toggle-idle-o-meter'/>
+#endif
 
       <separator/>
 #ifdef MIXBUS

gtk2_ardour/ardour_ui.cc

@@ -142,6 +142,7 @@ typedef uint64_t microseconds_t;
 #include "global_port_matrix.h"
 #include "gui_object.h"
 #include "gui_thread.h"
+#include "idleometer.h"
 #include "keyboard.h"
 #include "keyeditor.h"
 #include "location_ui.h"
@@ -308,6 +309,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
 	, audio_midi_setup (X_("audio-midi-setup"), _("Audio/MIDI Setup"))
 	, export_video_dialog (X_("video-export"), _("Video Export Dialog"))
 	, lua_script_window (X_("script-manager"), _("Script Manager"))
+	, idleometer (X_("idle-o-meter"), _("Idle'o'Meter"))
 	, session_option_editor (X_("session-options-editor"), _("Properties"), boost::bind (&ARDOUR_UI::create_session_option_editor, this))
 	, add_video_dialog (X_("add-video"), _("Add Video"), boost::bind (&ARDOUR_UI::create_add_video_dialog, this))
 	, bundle_manager (X_("bundle-manager"), _("Bundle Manager"), boost::bind (&ARDOUR_UI::create_bundle_manager, this))
@@ -479,6 +481,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
 		midi_port_matrix.set_state (*ui_xml, 0);
 		export_video_dialog.set_state (*ui_xml, 0);
 		lua_script_window.set_state (*ui_xml, 0);
+		idleometer.set_state (*ui_xml, 0);
 	}
 
 	/* Separate windows */
@@ -498,6 +501,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
 	WM::Manager::instance().register_window (&big_clock_window);
 	WM::Manager::instance().register_window (&audio_port_matrix);
 	WM::Manager::instance().register_window (&midi_port_matrix);
+	WM::Manager::instance().register_window (&idleometer);
 
 	/* do not retain position for add route dialog */
 	add_route_dialog.set_state_mask (WindowProxy::Size);

gtk2_ardour/ardour_ui.h

@@ -90,6 +90,7 @@
 #include "engine_dialog.h"
 #include "export_video_dialog.h"
 #include "global_port_matrix.h"
+#include "idleometer.h"
 #include "keyeditor.h"
 #include "location_ui.h"
 #include "lua_script_manager.h"
@@ -114,6 +115,7 @@ class RouteParams_UI;
 class SessionOptionEditor;
 class SpeakerDialog;
 class GlobalPortMatrixWindow;
+class IdleOMeter;
 #endif
 
 class VideoTimeLine;
@@ -729,6 +731,7 @@ private:
 	WM::Proxy<EngineControl> audio_midi_setup;
 	WM::Proxy<ExportVideoDialog> export_video_dialog;
 	WM::Proxy<LuaScriptManager> lua_script_window;
+	WM::Proxy<IdleOMeter> idleometer;
 
 	/* Windows/Dialogs that require a creator method */
 

gtk2_ardour/idleometer.cc

@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2076 Robin Gareus <robin@gareus.org>
+ * Copyright (C) 2011 Paul Davis
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <glib.h>
+#include <gtkmm/table.h>
+
+#include "idleometer.h"
+#include "pbd/i18n.h"
+
+static int64_t _x_get_monotonic_usec() {
+#ifdef PLATFORM_WINDOWS
+	return PBD::get_microseconds();
+#endif
+	return g_get_monotonic_time();
+}
+
+using namespace Gtk;
+
+IdleOMeter::IdleOMeter ()
+	: ArdourDialog (_("Idle O Meter"))
+{
+	get_vbox()->set_spacing (8);
+	Label* l = manage (new Label (_("<b>GUI Idle Timing Statistics</b>"), ALIGN_CENTER));
+	l->set_use_markup ();
+
+	get_vbox()->pack_start (*l, false, false);
+
+	HBox* b = manage (new HBox ());
+	Table* t = manage (new Table ());
+	b->pack_start (*t, true, false);
+	get_vbox()->pack_start (*b, false, false);
+
+	_label_cur.set_alignment (ALIGN_RIGHT, ALIGN_CENTER);
+	_label_min.set_alignment (ALIGN_RIGHT, ALIGN_CENTER);
+	_label_max.set_alignment (ALIGN_RIGHT, ALIGN_CENTER);
+	_label_avg.set_alignment (ALIGN_RIGHT, ALIGN_CENTER);
+	_label_dev.set_alignment (ALIGN_RIGHT, ALIGN_CENTER);
+
+	int row = 0;
+	t->attach (*manage (new Label (_("Current:"), ALIGN_RIGHT)), 0, 1, row, row + 1, FILL, SHRINK);
+	t->attach (_label_cur, 1, 2, row, row + 1, FILL, SHRINK);
+	++row;
+	t->attach (*manage (new Label (_("Min:"),     ALIGN_RIGHT)), 0, 1, row, row + 1, FILL, SHRINK);
+	t->attach (_label_min, 1, 2, row, row + 1, FILL, SHRINK);
+	++row;
+	t->attach (*manage (new Label (_("Max:"),     ALIGN_RIGHT)), 0, 1, row, row + 1, FILL, SHRINK);
+	t->attach (_label_max, 1, 2, row, row + 1, FILL, SHRINK);
+	++row;
+	t->attach (*manage (new Label (_("Mean:"),    ALIGN_RIGHT)), 0, 1, row, row + 1, FILL, SHRINK);
+	t->attach (_label_avg, 1, 2, row, row + 1, FILL, SHRINK);
+	++row;
+	t->attach (*manage (new Label (_("\u03c3:"),  ALIGN_RIGHT)), 0, 1, row, row + 1, FILL, SHRINK);
+	t->attach (_label_dev, 1, 2, row, row + 1, FILL, SHRINK);
+}
+
+IdleOMeter::~IdleOMeter ()
+{
+	_idle_connection.disconnect ();
+}
+
+bool
+IdleOMeter::idle ()
+{
+	const int64_t now = _x_get_monotonic_usec ();
+	const int64_t elapsed = now - _last;
+
+	_max = std::max (_max, elapsed);
+	_min = std::min (_min, elapsed);
+	_last = now;
+	_total += elapsed;
+	++_cnt;
+
+	const double cnt = _cnt;
+
+	/* running variance */
+	if (_cnt <= 1) {
+		_var_m = elapsed;
+		_var_s = 0;
+	} else {
+		const double var_m1 = _var_m;
+		const double t = elapsed;
+		_var_m += (t - _var_m) / cnt;
+		_var_s += (t - _var_m) * (t - var_m1);
+	}
+
+	if (now - _last_display < 80000 || _cnt < 2) {
+		return true;
+	}
+
+	const double avg = _total / cnt;
+	const double stddev = sqrt (_var_s / (_cnt - 1.0));
+	_last_display = now;
+
+	char buf[128];
+
+	snprintf (buf, sizeof(buf), "%8.2f ms", elapsed / 1000.0);
+	_label_cur.set_text (buf);
+	snprintf (buf, sizeof(buf), "%8.2f ms", _min / 1000.0);
+	_label_min.set_text (buf);
+	snprintf (buf, sizeof(buf), "%8.2f ms", _max / 1000.0);
+	_label_max.set_text (buf);
+	snprintf (buf, sizeof(buf), "%8.3f ms", avg / 1000.0);
+	_label_avg.set_text (buf);
+	snprintf (buf, sizeof(buf), "%8.3f ms", stddev / 1000.0);
+	_label_dev.set_text (buf);
+
+	return true;
+}
+
+void
+IdleOMeter::reset ()
+{
+	_last = _x_get_monotonic_usec ();
+	_last_display = _last;
+	_max = 0;
+	_min = INT64_MAX;
+	_cnt = 0;
+	_total = _var_m = _var_s = 0;
+
+	_label_cur.set_text ("-");
+	_label_min.set_text ("-");
+	_label_max.set_text ("-");
+	_label_avg.set_text ("-");
+	_label_dev.set_text ("-");
+}
+
+void
+IdleOMeter::on_show ()
+{
+	ArdourDialog::on_show ();
+	reset ();
+	_idle_connection = Glib::signal_idle().connect (sigc::mem_fun (*this, &IdleOMeter::idle));
+}
+
+void
+IdleOMeter::on_hide ()
+{
+	_idle_connection.disconnect ();
+	ArdourDialog::on_hide ();
+}

gtk2_ardour/idleometer.h

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2076 Robin Gareus <robin@gareus.org>
+ * Copyright (C) 2011 Paul Davis
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef __ardour_idle_o_meter_h__
+#define __ardour_idle_o_meter_h__
+
+#include <gtkmm/label.h>
+#include "ardour_dialog.h"
+
+class IdleOMeter : public ArdourDialog
+{
+public:
+	IdleOMeter ();
+	~IdleOMeter ();
+
+protected:
+	virtual void on_show ();
+	virtual void on_hide ();
+
+private:
+	void reset ();
+	bool idle ();
+
+	Gtk::Label _label_cur;
+	Gtk::Label _label_min;
+	Gtk::Label _label_max;
+	Gtk::Label _label_avg;
+	Gtk::Label _label_dev;
+
+	int64_t _last_display;
+
+	int64_t _last;
+	int64_t _min;
+	int64_t _max;
+
+	int64_t _cnt;
+	double _total;
+	double _var_m, _var_s;
+	sigc::connection _idle_connection;
+};
+#endif
+

gtk2_ardour/wscript

@@ -122,6 +122,7 @@ gtk2_ardour_sources = [
         'group_tabs.cc',
         'gtk_pianokeyboard.c',
         'gui_object.cc',
+        'idleometer.cc',
         'insert_remove_time_dialog.cc',
         'instrument_selector.cc',
         'interthread_progress_window.cc',