gtk/perf/gtkwidgetprofiler.c

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#include "config.h"
#include <string.h>
#include "gtkwidgetprofiler.h"
#include "typebuiltins.h"
typedef enum {
STATE_NOT_CREATED,
STATE_INSTRUMENTED_NOT_MAPPED,
STATE_INSTRUMENTED_MAPPED
} State;
struct _GtkWidgetProfilerPrivate {
State state;
GtkWidget *profiled_widget;
GtkWidget *toplevel;
int n_iterations;
GTimer *timer;
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gulong toplevel_draw_id;
gulong toplevel_property_notify_event_id;
GdkAtom profiler_atom;
guint profiling : 1;
};
G_DEFINE_TYPE (GtkWidgetProfiler, gtk_widget_profiler, G_TYPE_OBJECT);
static void gtk_widget_profiler_finalize (GObject *object);
enum {
CREATE_WIDGET,
REPORT,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
static void
gtk_widget_profiler_class_init (GtkWidgetProfilerClass *class)
{
GObjectClass *object_class;
object_class = (GObjectClass *) class;
signals[CREATE_WIDGET] =
g_signal_new ("create-widget",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkWidgetProfilerClass, create_widget),
NULL, NULL,
NULL,
G_TYPE_OBJECT, 0);
signals[REPORT] =
g_signal_new ("report",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkWidgetProfilerClass, report),
NULL, NULL,
NULL,
G_TYPE_NONE, 3,
GTK_TYPE_WIDGET_PROFILER_REPORT,
G_TYPE_OBJECT,
G_TYPE_DOUBLE);
object_class->finalize = gtk_widget_profiler_finalize;
}
static void
gtk_widget_profiler_init (GtkWidgetProfiler *profiler)
{
GtkWidgetProfilerPrivate *priv;
priv = g_new0 (GtkWidgetProfilerPrivate, 1);
profiler->priv = priv;
priv->state = STATE_NOT_CREATED;
priv->n_iterations = 1;
priv->timer = g_timer_new ();
priv->profiler_atom = gdk_atom_intern ("GtkWidgetProfiler", FALSE);
}
static void
reset_state (GtkWidgetProfiler *profiler)
{
GtkWidgetProfilerPrivate *priv;
priv = profiler->priv;
if (priv->toplevel)
{
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g_signal_handler_disconnect (priv->toplevel, priv->toplevel_draw_id);
priv->toplevel_draw_id = 0;
g_signal_handler_disconnect (priv->toplevel, priv->toplevel_property_notify_event_id);
priv->toplevel_property_notify_event_id = 0;
gtk_widget_destroy (priv->toplevel);
priv->toplevel = NULL;
priv->profiled_widget = NULL;
}
priv->state = STATE_NOT_CREATED;
}
static void
gtk_widget_profiler_finalize (GObject *object)
{
GtkWidgetProfiler *profiler;
GtkWidgetProfilerPrivate *priv;
profiler = GTK_WIDGET_PROFILER (object);
priv = profiler->priv;
reset_state (profiler);
g_timer_destroy (priv->timer);
g_free (priv);
G_OBJECT_CLASS (gtk_widget_profiler_parent_class)->finalize (object);
}
GtkWidgetProfiler *
gtk_widget_profiler_new (void)
{
return g_object_new (GTK_TYPE_WIDGET_PROFILER, NULL);
}
void
gtk_widget_profiler_set_num_iterations (GtkWidgetProfiler *profiler,
gint n_iterations)
{
GtkWidgetProfilerPrivate *priv;
g_return_if_fail (GTK_IS_WIDGET_PROFILER (profiler));
g_return_if_fail (n_iterations > 0);
priv = profiler->priv;
priv->n_iterations = n_iterations;
}
static void
report (GtkWidgetProfiler *profiler,
GtkWidgetProfilerReport report,
gdouble elapsed)
{
GtkWidgetProfilerPrivate *priv;
priv = profiler->priv;
g_signal_emit (profiler, signals[REPORT], 0, report, priv->profiled_widget, elapsed);
}
static GtkWidget *
create_widget_via_emission (GtkWidgetProfiler *profiler)
{
GtkWidget *widget;
widget = NULL;
g_signal_emit (profiler, signals[CREATE_WIDGET], 0, &widget);
if (!widget)
g_error ("The profiler emitted the \"create-widget\" signal but the signal handler returned no widget!");
if (gtk_widget_get_visible (widget) || gtk_widget_get_mapped (widget))
g_error ("The handler for \"create-widget\" must return an unmapped and unshown widget");
return widget;
}
static gboolean
toplevel_property_notify_event_cb (GtkWidget *widget, GdkEventProperty *event, gpointer data)
{
GtkWidgetProfiler *profiler;
GtkWidgetProfilerPrivate *priv;
gdouble elapsed;
profiler = GTK_WIDGET_PROFILER (data);
priv = profiler->priv;
if (event->atom != priv->profiler_atom)
return FALSE;
/* Finish timing map/expose */
elapsed = g_timer_elapsed (priv->timer, NULL);
report (profiler, GTK_WIDGET_PROFILER_REPORT_EXPOSE, elapsed);
gtk_main_quit (); /* This will get us back to the end of profile_map_expose() */
return TRUE;
}
static gboolean
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toplevel_idle_after_draw_cb (gpointer data)
{
GtkWidgetProfiler *profiler;
GtkWidgetProfilerPrivate *priv;
profiler = GTK_WIDGET_PROFILER (data);
priv = profiler->priv;
gdk_property_change (gtk_widget_get_window (priv->toplevel),
priv->profiler_atom,
gdk_atom_intern ("STRING", FALSE),
8,
GDK_PROP_MODE_REPLACE,
(guchar *) "hello",
strlen ("hello"));
return FALSE;
}
static gboolean
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toplevel_draw_cb (GtkWidget *widget, cairo_t *cr, gpointer data)
{
GtkWidgetProfiler *profiler;
profiler = GTK_WIDGET_PROFILER (data);
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gdk_threads_add_idle_full (G_PRIORITY_HIGH, toplevel_idle_after_draw_cb, profiler, NULL);
return FALSE;
}
static void
instrument_toplevel (GtkWidgetProfiler *profiler,
GtkWidget *toplevel)
{
GtkWidgetProfilerPrivate *priv;
priv = profiler->priv;
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priv->toplevel_draw_id = g_signal_connect (toplevel, "draw",
G_CALLBACK (toplevel_draw_cb), profiler);
gtk_widget_add_events (toplevel, GDK_PROPERTY_CHANGE_MASK);
priv->toplevel_property_notify_event_id = g_signal_connect (toplevel, "property-notify-event",
G_CALLBACK (toplevel_property_notify_event_cb), profiler);
}
static GtkWidget *
ensure_and_get_toplevel (GtkWidget *widget)
{
GtkWidget *toplevel;
GtkWidget *window;
toplevel = gtk_widget_get_toplevel (widget);
if (gtk_widget_is_toplevel (toplevel))
return toplevel;
g_assert (toplevel == widget); /* we don't want extraneous ancestors */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_container_add (GTK_CONTAINER (window), widget);
return window;
}
static GtkWidget *
get_instrumented_toplevel (GtkWidgetProfiler *profiler,
GtkWidget *widget)
{
GtkWidget *window;
window = ensure_and_get_toplevel (widget);
instrument_toplevel (profiler, window);
return window;
}
static void
map_widget (GtkWidgetProfiler *profiler)
{
GtkWidgetProfilerPrivate *priv;
priv = profiler->priv;
g_assert (priv->state == STATE_INSTRUMENTED_NOT_MAPPED);
/* Time map.
*
* FIXME: we are really timing a show_all(); we don't really wait for all the "map_event" signals
* to happen. Should we rename GTK_WIDGET_PROFILER_REPORT_MAP report to something else?
*/
gtk_widget_show_all (priv->toplevel);
priv->state = STATE_INSTRUMENTED_MAPPED;
}
static void
profile_map_expose (GtkWidgetProfiler *profiler)
{
GtkWidgetProfilerPrivate *priv;
gdouble elapsed;
priv = profiler->priv;
g_assert (priv->state == STATE_INSTRUMENTED_NOT_MAPPED);
g_timer_reset (priv->timer);
map_widget (profiler);
elapsed = g_timer_elapsed (priv->timer, NULL);
report (profiler, GTK_WIDGET_PROFILER_REPORT_MAP, elapsed);
/* Time expose; this gets recorded in toplevel_property_notify_event_cb() */
g_timer_reset (priv->timer);
gtk_main ();
}
static void
profile_destroy (GtkWidgetProfiler *profiler)
{
GtkWidgetProfilerPrivate *priv;
gdouble elapsed;
priv = profiler->priv;
g_assert (priv->state != STATE_NOT_CREATED);
g_timer_reset (priv->timer);
reset_state (profiler);
elapsed = g_timer_elapsed (priv->timer, NULL);
report (profiler, GTK_WIDGET_PROFILER_REPORT_DESTROY, elapsed);
}
static void
create_widget (GtkWidgetProfiler *profiler)
{
GtkWidgetProfilerPrivate *priv;
priv = profiler->priv;
g_assert (priv->state == STATE_NOT_CREATED);
priv->profiled_widget = create_widget_via_emission (profiler);
priv->toplevel = get_instrumented_toplevel (profiler, priv->profiled_widget);
priv->state = STATE_INSTRUMENTED_NOT_MAPPED;
}
/* The "boot time" of a widget is the time needed to
*
* 1. Create the widget
* 2. Map it
* 3. Expose it
* 4. Destroy it.
*
* This runs a lot of interesting code: instantiation, size requisition and
* allocation, realization, mapping, exposing, destruction.
*/
static void
profile_boot (GtkWidgetProfiler *profiler)
{
GtkWidgetProfilerPrivate *priv;
gdouble elapsed;
priv = profiler->priv;
g_assert (priv->state == STATE_NOT_CREATED);
/* Time creation */
g_timer_reset (priv->timer);
create_widget (profiler);
elapsed = g_timer_elapsed (priv->timer, NULL);
report (profiler, GTK_WIDGET_PROFILER_REPORT_CREATE, elapsed);
/* Start timing map/expose */
profile_map_expose (profiler);
/* Profile destruction */
profile_destroy (profiler);
}
/* To measure expose time, we trigger a full expose on the toplevel window. We
* do the same as xrefresh(1), i.e. we map and unmap a window to make the other
* one expose.
*/
static void
profile_expose (GtkWidgetProfiler *profiler)
{
GtkWidgetProfilerPrivate *priv;
GtkAllocation allocation;
GdkWindow *window;
GdkWindowAttr attr;
int attr_mask;
priv = profiler->priv;
g_assert (priv->state == STATE_INSTRUMENTED_MAPPED);
/* Time creation */
gtk_widget_get_allocation (priv->toplevel, &allocation);
attr.x = 0;
attr.y = 0;
attr.width = allocation.width;
attr.height = allocation.width;
attr.wclass = GDK_INPUT_OUTPUT;
attr.window_type = GDK_WINDOW_TEMP;
attr_mask = GDK_WA_X | GDK_WA_Y;
window = gdk_window_new (gdk_screen_get_root_window (gtk_widget_get_screen (priv->toplevel)),
&attr, attr_mask);
gdk_window_show (window);
gdk_window_hide (window);
gdk_window_destroy (window);
/* Time expose; this gets recorded in toplevel_property_notify_event_cb() */
g_timer_reset (priv->timer);
gtk_main ();
}
void
gtk_widget_profiler_profile_boot (GtkWidgetProfiler *profiler)
{
GtkWidgetProfilerPrivate *priv;
int i, n;
g_return_if_fail (GTK_IS_WIDGET_PROFILER (profiler));
priv = profiler->priv;
g_return_if_fail (!priv->profiling);
reset_state (profiler);
priv->profiling = TRUE;
n = priv->n_iterations;
for (i = 0; i < n; i++)
profile_boot (profiler);
priv->profiling = FALSE;
}
void
gtk_widget_profiler_profile_expose (GtkWidgetProfiler *profiler)
{
GtkWidgetProfilerPrivate *priv;
int i, n;
g_return_if_fail (GTK_IS_WIDGET_PROFILER (profiler));
priv = profiler->priv;
g_return_if_fail (!priv->profiling);
reset_state (profiler);
priv->profiling = TRUE;
create_widget (profiler);
map_widget (profiler);
n = priv->n_iterations;
for (i = 0; i < n; i++)
profile_expose (profiler);
priv->profiling = FALSE;
reset_state (profiler);
}