sysprof: allow ignoring process 0

The idle process is sort of a catch-all at times, and so if you remove it
that can make it easier to get more reasonble percentages from the rest
of the system.

src/sysprof/sysprof-callgraph-view-private.h

@@ -54,8 +54,9 @@ struct _SysprofCallgraphView
 
   guint bottom_up : 1;
   guint categorize_frames : 1;
-  guint include_threads : 1;
   guint hide_system_libraries : 1;
+  guint ignore_process_0 : 1;
+  guint include_threads : 1;
 };
 
 struct _SysprofCallgraphViewClass

src/sysprof/sysprof-callgraph-view.c

@@ -36,6 +36,7 @@ enum {
   PROP_CALLGRAPH,
   PROP_DOCUMENT,
   PROP_HIDE_SYSTEM_LIBRARIES,
+  PROP_IGNORE_PROCESS_0,
   PROP_INCLUDE_THREADS,
   PROP_TRACEABLES,
   PROP_UTILITY_SUMMARY,
@@ -435,6 +436,10 @@ sysprof_callgraph_view_set_property (GObject      *object,
       sysprof_callgraph_view_set_hide_system_libraries (self, g_value_get_boolean (value));
       break;
 
+    case PROP_IGNORE_PROCESS_0:
+      sysprof_callgraph_view_set_ignore_process_0 (self, g_value_get_boolean (value));
+      break;
+
     case PROP_INCLUDE_THREADS:
       sysprof_callgraph_view_set_include_threads (self, g_value_get_boolean (value));
       break;
@@ -488,6 +493,11 @@ sysprof_callgraph_view_class_init (SysprofCallgraphViewClass *klass)
                           FALSE,
                           (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
+  properties[PROP_IGNORE_PROCESS_0] =
+    g_param_spec_boolean ("ignore-process-0", NULL, NULL,
+                          FALSE,
+                          (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
   properties[PROP_TRACEABLES] =
     g_param_spec_object ("traceables", NULL, NULL,
                          G_TYPE_LIST_MODEL,
@@ -653,6 +663,9 @@ sysprof_callgraph_view_reload (SysprofCallgraphView *self)
 
   g_clear_handle_id (&self->reload_source, g_source_remove);
 
+  if (self->ignore_process_0)
+    flags |= SYSPROF_CALLGRAPH_FLAGS_IGNORE_PROCESS_0;
+
   if (self->include_threads)
     flags |= SYSPROF_CALLGRAPH_FLAGS_INCLUDE_THREADS;
 
@@ -894,3 +907,27 @@ sysprof_callgraph_view_set_include_threads (SysprofCallgraphView *self,
       sysprof_callgraph_view_queue_reload (self);
     }
 }
+
+gboolean
+sysprof_callgraph_view_get_ignore_process_0 (SysprofCallgraphView *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_CALLGRAPH_VIEW (self), FALSE);
+
+  return self->ignore_process_0;
+}
+
+void
+sysprof_callgraph_view_set_ignore_process_0 (SysprofCallgraphView *self,
+                                             gboolean              ignore_process_0)
+{
+  g_return_if_fail (SYSPROF_IS_CALLGRAPH_VIEW (self));
+
+  ignore_process_0 = !!ignore_process_0;
+
+  if (self->ignore_process_0 != ignore_process_0)
+    {
+      self->ignore_process_0 = ignore_process_0;
+      g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_IGNORE_PROCESS_0]);
+      sysprof_callgraph_view_queue_reload (self);
+    }
+}

src/sysprof/sysprof-callgraph-view.h

@@ -49,6 +49,9 @@ void              sysprof_callgraph_view_set_bottom_up             (SysprofCallg
 gboolean          sysprof_callgraph_view_get_categorize_frames     (SysprofCallgraphView *self);
 void              sysprof_callgraph_view_set_categorize_frames     (SysprofCallgraphView *self,
                                                                     gboolean              categorize_frames);
+gboolean          sysprof_callgraph_view_get_ignore_process_0      (SysprofCallgraphView *self);
+void              sysprof_callgraph_view_set_ignore_process_0      (SysprofCallgraphView *self,
+                                                                    gboolean              ignore_process_0);
 gboolean          sysprof_callgraph_view_get_include_threads       (SysprofCallgraphView *self);
 void              sysprof_callgraph_view_set_include_threads       (SysprofCallgraphView *self,
                                                                     gboolean              include_threads);

src/sysprof/sysprof-callgraph-view.ui

@@ -271,6 +271,10 @@
         <attribute name="label" translatable="yes">Bottom Up</attribute>
         <attribute name="action">win.callgraph.bottom-up</attribute>
       </item>
+      <item>
+        <attribute name="label" translatable="yes">Ignore Process 0</attribute>
+        <attribute name="action">win.callgraph.ignore-process-0</attribute>
+      </item>
     </section>
   </menu>
 </interface>

src/sysprof/sysprof-samples-section.ui

@@ -97,6 +97,11 @@
                 <lookup name="session">SysprofSamplesSection</lookup>
               </lookup>
             </binding>
+            <binding name="ignore-process-0">
+              <lookup name="ignore-process-0" type="SysprofSession">
+                <lookup name="session">SysprofSamplesSection</lookup>
+              </lookup>
+            </binding>
             <binding name="document">
               <lookup name="document" type="SysprofSession">
                 <lookup name="session">SysprofSamplesSection</lookup>

src/sysprof/sysprof-session.c

@@ -41,6 +41,7 @@ struct _SysprofSession
 
   guint            bottom_up : 1;
   guint            categorize_frames : 1;
+  guint            ignore_process_0 : 1;
   guint            include_threads : 1;
   guint            hide_system_libraries : 1;
 };
@@ -52,6 +53,7 @@ enum {
   PROP_DOCUMENT_TIME,
   PROP_FILTER,
   PROP_HIDE_SYSTEM_LIBRARIES,
+  PROP_IGNORE_PROCESS_0,
   PROP_INCLUDE_THREADS,
   PROP_CATEGORIZE_FRAMES,
   PROP_SELECTED_TIME,
@@ -146,6 +148,10 @@ sysprof_session_get_property (GObject    *object,
       g_value_set_boolean (value, self->hide_system_libraries);
       break;
 
+    case PROP_IGNORE_PROCESS_0:
+      g_value_set_boolean (value, self->ignore_process_0);
+      break;
+
     case PROP_INCLUDE_THREADS:
       g_value_set_boolean (value, self->include_threads);
       break;
@@ -197,6 +203,10 @@ sysprof_session_set_property (GObject      *object,
       self->hide_system_libraries = g_value_get_boolean (value);
       break;
 
+    case PROP_IGNORE_PROCESS_0:
+      self->ignore_process_0 = g_value_get_boolean (value);
+      break;
+
     case PROP_INCLUDE_THREADS:
       self->include_threads = g_value_get_boolean (value);
       break;
@@ -245,6 +255,11 @@ sysprof_session_class_init (SysprofSessionClass *klass)
                           FALSE,
                           (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
+  properties [PROP_IGNORE_PROCESS_0] =
+    g_param_spec_boolean ("ignore-process-0", NULL, NULL,
+                          FALSE,
+                          (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
   properties [PROP_INCLUDE_THREADS] =
     g_param_spec_boolean ("include-threads", NULL, NULL,
                           FALSE,

src/sysprof/sysprof-window.c

@@ -132,6 +132,7 @@ sysprof_window_set_document (SysprofWindow   *self,
     "bottom-up",
     "categorize-frames",
     "hide-system-libraries",
+    "ignore-process-0",
     "include-threads",
   };