Split off running state handling into separate structure
This is a small memory usage optimization, and cleans up the code. In particular, this will help for later patches which perform more substantial operations on running apps. https://bugzilla.gnome.org/show_bug.cgi?id=621203
This commit is contained in:
Colin Walters
parent
7f8f0f2358
commit
da4e24555b
209
src/shell-app.c
209
src/shell-app.c
@ -12,6 +12,26 @@
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#include <string.h>
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/* This is mainly a memory usage optimization - the user is going to
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* be running far fewer of the applications at one time than they have
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* installed. But it also just helps keep the code more logically
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* separated.
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*/
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typedef struct {
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guint refcount;
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/* Last time the user interacted with any of this application's windows */
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guint32 last_user_time;
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/* Signal connection to dirty window sort list on workspace changes */
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guint workspace_switch_id;
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GSList *windows;
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/* Whether or not we need to resort the windows; this is done on demand */
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gboolean window_sort_stale : 1;
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} ShellAppRunningState;
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/**
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* SECTION:shell-app
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* @short_description: Object representing an application
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@ -23,16 +43,11 @@ struct _ShellApp
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{
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GObject parent;
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ShellAppState state;
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ShellAppInfo *info;
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guint32 last_user_time;
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guint workspace_switch_id;
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GSList *windows;
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ShellAppState state;
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gboolean window_sort_stale : 1;
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ShellAppRunningState *running_state;
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};
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G_DEFINE_TYPE (ShellApp, shell_app, G_TYPE_OBJECT);
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@ -49,6 +64,9 @@ enum {
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static guint shell_app_signals[LAST_SIGNAL] = { 0 };
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static void create_running_state (ShellApp *app);
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static void unref_running_state (ShellAppRunningState *state);
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static void
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shell_app_get_property (GObject *gobject,
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guint prop_id,
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@ -507,22 +525,27 @@ shell_app_compare_windows (gconstpointer a,
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GSList *
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shell_app_get_windows (ShellApp *app)
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{
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if (app->window_sort_stale)
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if (app->running_state == NULL)
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return NULL;
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if (app->running_state->window_sort_stale)
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{
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CompareWindowsData data;
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data.app = app;
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data.active_workspace = meta_screen_get_active_workspace (shell_global_get_screen (shell_global_get ()));
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app->windows = g_slist_sort_with_data (app->windows, shell_app_compare_windows, &data);
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app->window_sort_stale = FALSE;
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app->running_state->windows = g_slist_sort_with_data (app->running_state->windows, shell_app_compare_windows, &data);
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app->running_state->window_sort_stale = FALSE;
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}
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return app->windows;
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return app->running_state->windows;
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}
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guint
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shell_app_get_n_windows (ShellApp *app)
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{
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return g_slist_length (app->windows);
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if (app->running_state == NULL)
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return 0;
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return g_slist_length (app->running_state->windows);
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}
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static gboolean
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@ -530,7 +553,10 @@ shell_app_has_visible_windows (ShellApp *app)
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{
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GSList *iter;
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for (iter = app->windows; iter; iter = iter->next)
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if (app->running_state == NULL)
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return FALSE;
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for (iter = app->running_state->windows; iter; iter = iter->next)
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{
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MetaWindow *window = iter->data;
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@ -547,7 +573,10 @@ shell_app_is_on_workspace (ShellApp *app,
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{
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GSList *iter;
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for (iter = app->windows; iter; iter = iter->next)
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if (app->running_state == NULL)
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return FALSE;
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for (iter = app->running_state->windows; iter; iter = iter->next)
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{
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if (meta_window_get_workspace (iter->data) == workspace)
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return TRUE;
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@ -589,12 +618,16 @@ shell_app_compare (ShellApp *app,
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else if (!vis_app && vis_other)
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return 1;
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if (app->windows && !other->windows)
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return -1;
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else if (!app->windows && other->windows)
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return 1;
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if (app->state == SHELL_APP_STATE_RUNNING)
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{
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if (app->running_state->windows && !other->running_state->windows)
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return -1;
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else if (!app->running_state->windows && other->running_state->windows)
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return 1;
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return other->running_state->last_user_time - app->running_state->last_user_time;
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}
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return other->last_user_time - app->last_user_time;
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return 0;
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}
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ShellApp *
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@ -631,9 +664,20 @@ shell_app_state_transition (ShellApp *app,
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g_return_if_fail (!(app->state == SHELL_APP_STATE_RUNNING &&
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state == SHELL_APP_STATE_STARTING));
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app->state = state;
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g_object_notify (G_OBJECT (app), "state");
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if (app->state != SHELL_APP_STATE_RUNNING && app->running_state)
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{
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unref_running_state (app->running_state);
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app->running_state = NULL;
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}
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else if (app->state == SHELL_APP_STATE_RUNNING)
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{
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create_running_state (app);
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}
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_shell_window_tracker_notify_app_state_changed (shell_window_tracker_get_default (), app);
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g_object_notify (G_OBJECT (app), "state");
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}
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static void
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@ -648,14 +692,16 @@ shell_app_on_user_time_changed (MetaWindow *window,
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GParamSpec *pspec,
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ShellApp *app)
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{
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app->last_user_time = meta_window_get_user_time (window);
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g_assert (app->running_state != NULL);
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app->running_state->last_user_time = meta_window_get_user_time (window);
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/* Ideally we don't want to emit windows-changed if the sort order
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* isn't actually changing. This check catches most of those.
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*/
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if (window != app->windows->data)
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if (window != app->running_state->windows->data)
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{
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app->window_sort_stale = TRUE;
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app->running_state->window_sort_stale = TRUE;
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g_signal_emit (app, shell_app_signals[WINDOWS_CHANGED], 0);
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}
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}
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@ -667,9 +713,13 @@ shell_app_on_ws_switch (MetaScreen *screen,
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MetaMotionDirection direction,
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gpointer data)
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{
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ShellApp *self = SHELL_APP (data);
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self->window_sort_stale = TRUE;
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g_signal_emit (self, shell_app_signals[WINDOWS_CHANGED], 0);
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ShellApp *app = SHELL_APP (data);
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g_assert (app->running_state != NULL);
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app->running_state->window_sort_stale = TRUE;
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g_signal_emit (app, shell_app_signals[WINDOWS_CHANGED], 0);
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}
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void
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@ -678,65 +728,49 @@ _shell_app_add_window (ShellApp *app,
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{
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guint32 user_time;
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if (g_slist_find (app->windows, window))
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if (app->running_state && g_slist_find (app->running_state->windows, window))
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return;
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app->windows = g_slist_prepend (app->windows, g_object_ref (window));
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g_signal_connect (window, "unmanaged", G_CALLBACK(shell_app_on_unmanaged), app);
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g_signal_connect (window, "notify::user-time", G_CALLBACK(shell_app_on_user_time_changed), app);
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app->window_sort_stale = TRUE;
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user_time = meta_window_get_user_time (window);
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if (user_time > app->last_user_time)
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app->last_user_time = user_time;
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g_object_freeze_notify (G_OBJECT (app));
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/* Ensure we've initialized running state */
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if (app->state != SHELL_APP_STATE_RUNNING)
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shell_app_state_transition (app, SHELL_APP_STATE_RUNNING);
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g_assert (app->running_state != NULL);
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app->running_state->window_sort_stale = TRUE;
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app->running_state->windows = g_slist_prepend (app->running_state->windows, g_object_ref (window));
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g_signal_connect (window, "unmanaged", G_CALLBACK(shell_app_on_unmanaged), app);
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g_signal_connect (window, "notify::user-time", G_CALLBACK(shell_app_on_user_time_changed), app);
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user_time = meta_window_get_user_time (window);
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if (user_time > app->running_state->last_user_time)
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app->running_state->last_user_time = user_time;
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g_object_thaw_notify (G_OBJECT (app));
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g_signal_emit (app, shell_app_signals[WINDOWS_CHANGED], 0);
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if (app->workspace_switch_id == 0)
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{
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MetaScreen *screen = shell_global_get_screen (shell_global_get ());
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app->workspace_switch_id =
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g_signal_connect (screen, "workspace-switched", G_CALLBACK(shell_app_on_ws_switch), app);
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}
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}
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static void
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disconnect_workspace_switch (ShellApp *app)
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{
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MetaScreen *screen;
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if (app->workspace_switch_id == 0)
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return;
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screen = shell_global_get_screen (shell_global_get ());
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g_signal_handler_disconnect (screen, app->workspace_switch_id);
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app->workspace_switch_id = 0;
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}
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void
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_shell_app_remove_window (ShellApp *app,
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MetaWindow *window)
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{
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if (!g_slist_find (app->windows, window))
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g_assert (app->running_state != NULL);
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if (!g_slist_find (app->running_state->windows, window))
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return;
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g_signal_handlers_disconnect_by_func (window, G_CALLBACK(shell_app_on_unmanaged), app);
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g_signal_handlers_disconnect_by_func (window, G_CALLBACK(shell_app_on_user_time_changed), app);
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g_object_unref (window);
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app->windows = g_slist_remove (app->windows, window);
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app->running_state->windows = g_slist_remove (app->running_state->windows, window);
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if (app->running_state->windows == NULL)
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shell_app_state_transition (app, SHELL_APP_STATE_STOPPED);
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g_signal_emit (app, shell_app_signals[WINDOWS_CHANGED], 0);
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if (app->windows == NULL)
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{
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disconnect_workspace_switch (app);
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shell_app_state_transition (app, SHELL_APP_STATE_STOPPED);
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}
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}
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/**
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@ -792,9 +826,12 @@ shell_app_request_quit (ShellApp *app)
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{
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GSList *iter;
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if (shell_app_get_state (app) != SHELL_APP_STATE_RUNNING)
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return FALSE;
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/* TODO - check for an XSMP connection; we could probably use that */
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for (iter = app->windows; iter; iter = iter->next)
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for (iter = app->running_state->windows; iter; iter = iter->next)
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{
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MetaWindow *win = iter->data;
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@ -806,6 +843,35 @@ shell_app_request_quit (ShellApp *app)
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return TRUE;
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}
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static void
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create_running_state (ShellApp *app)
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{
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MetaScreen *screen;
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g_assert (app->running_state == NULL);
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screen = shell_global_get_screen (shell_global_get ());
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app->running_state = g_slice_new0 (ShellAppRunningState);
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app->running_state->refcount = 1;
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app->running_state->workspace_switch_id =
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g_signal_connect (screen, "workspace-switched", G_CALLBACK(shell_app_on_ws_switch), app);
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}
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static void
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unref_running_state (ShellAppRunningState *state)
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{
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MetaScreen *screen;
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state->refcount--;
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if (state->refcount > 0)
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return;
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screen = shell_global_get_screen (shell_global_get ());
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g_signal_handler_disconnect (screen, state->workspace_switch_id);
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g_slice_free (ShellAppRunningState, state);
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}
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static void
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shell_app_init (ShellApp *self)
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{
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@ -823,10 +889,11 @@ shell_app_dispose (GObject *object)
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app->info = NULL;
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}
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while (app->windows)
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_shell_app_remove_window (app, app->windows->data);
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disconnect_workspace_switch (app);
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if (app->running_state)
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{
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while (app->running_state->windows)
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_shell_app_remove_window (app, app->running_state->windows->data);
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}
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G_OBJECT_CLASS(shell_app_parent_class)->dispose (object);
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}
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