9b7f228f8e
It isn't 2k38 safe and has therefore been deprecated. Replace it with GDateTime or g_get_real_time() as appropriate. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/657
780 lines
22 KiB
C
780 lines
22 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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#include "config.h"
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#include <string.h>
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#include <stdlib.h>
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <gdk/gdk.h>
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#include <gdk/gdkx.h>
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#include <glib.h>
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#include <gio/gio.h>
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#include <meta/display.h>
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#include <meta/group.h>
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#include <meta/window.h>
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#include "shell-app-usage.h"
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#include "shell-window-tracker.h"
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#include "shell-global.h"
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/* This file includes modified code from
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* desktop-data-engine/engine-dbus/hippo-application-monitor.c
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* in the functions collecting application usage data.
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* Written by Owen Taylor, originally licensed under LGPL 2.1.
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* Copyright Red Hat, Inc. 2006-2008
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*/
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/**
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* SECTION:shell-app-usage
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* @short_description: Track application usage/state data
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*
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* This class maintains some usage and state statistics for
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* applications by keeping track of the approximate time an application's
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* windows are focused, as well as the last workspace it was seen on.
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* This time tracking is implemented by watching for focus notifications,
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* and computing a time delta between them. Also we watch the
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* GNOME Session "StatusChanged" signal which by default is emitted after 5
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* minutes to signify idle.
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*/
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#define PRIVACY_SCHEMA "org.gnome.desktop.privacy"
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#define ENABLE_MONITORING_KEY "remember-app-usage"
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#define FOCUS_TIME_MIN_SECONDS 7 /* Need 7 continuous seconds of focus */
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#define USAGE_CLEAN_DAYS 7 /* If after 7 days we haven't seen an app, purge it */
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/* Data is saved to file SHELL_CONFIG_DIR/DATA_FILENAME */
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#define DATA_FILENAME "application_state"
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#define IDLE_TIME_TRANSITION_SECONDS 30 /* If we transition to idle, only count
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* this many seconds of usage */
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/* The ranking algorithm we use is: every time an app score reaches SCORE_MAX,
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* divide all scores by 2. Scores are raised by 1 unit every SAVE_APPS_TIMEOUT
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* seconds. This mechanism allows the list to update relatively fast when
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* a new app is used intensively.
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* To keep the list clean, and avoid being Big Brother, apps that have not been
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* seen for a week and whose score is below SCORE_MIN are removed.
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*/
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/* How often we save internally app data, in seconds */
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#define SAVE_APPS_TIMEOUT_SECONDS (5 * 60)
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/* With this value, an app goes from bottom to top of the
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* usage list in 50 hours of use */
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#define SCORE_MAX (3600 * 50 / FOCUS_TIME_MIN_SECONDS)
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/* If an app's score in lower than this and the app has not been used in a week,
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* remove it */
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#define SCORE_MIN (SCORE_MAX >> 3)
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/* http://www.gnome.org/~mccann/gnome-session/docs/gnome-session.html#org.gnome.SessionManager.Presence */
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#define GNOME_SESSION_STATUS_IDLE 3
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typedef struct UsageData UsageData;
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struct _ShellAppUsage
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{
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GObject parent;
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GFile *configfile;
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GDBusProxy *session_proxy;
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GSettings *privacy_settings;
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guint idle_focus_change_id;
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guint save_id;
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gboolean currently_idle;
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gboolean enable_monitoring;
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long watch_start_time;
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ShellApp *watched_app;
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/* <char *appid, UsageData *usage> */
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GHashTable *app_usages;
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};
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G_DEFINE_TYPE (ShellAppUsage, shell_app_usage, G_TYPE_OBJECT);
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/* Represents an application record for a given context */
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struct UsageData
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{
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gdouble score; /* Based on the number of times we'e seen the app and normalized */
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long last_seen; /* Used to clear old apps we've only seen a few times */
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};
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static void shell_app_usage_finalize (GObject *object);
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static void on_session_status_changed (GDBusProxy *proxy, guint status, ShellAppUsage *self);
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static void on_focus_app_changed (ShellWindowTracker *tracker, GParamSpec *spec, ShellAppUsage *self);
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static void ensure_queued_save (ShellAppUsage *self);
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static gboolean idle_save_application_usage (gpointer data);
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static void restore_from_file (ShellAppUsage *self);
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static void update_enable_monitoring (ShellAppUsage *self);
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static void on_enable_monitoring_key_changed (GSettings *settings,
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const gchar *key,
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ShellAppUsage *self);
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static long
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get_time (void)
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{
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return g_get_real_time () / G_TIME_SPAN_SECOND;
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}
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static void
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shell_app_usage_class_init (ShellAppUsageClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->finalize = shell_app_usage_finalize;
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}
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static UsageData *
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get_usage_for_app (ShellAppUsage *self,
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ShellApp *app)
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{
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UsageData *usage;
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const char *appid = shell_app_get_id (app);
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usage = g_hash_table_lookup (self->app_usages, appid);
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if (usage)
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return usage;
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usage = g_new0 (UsageData, 1);
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g_hash_table_insert (self->app_usages, g_strdup (appid), usage);
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return usage;
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}
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/* Limit the score to a certain level so that most used apps can change */
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static void
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normalize_usage (ShellAppUsage *self)
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{
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GHashTableIter iter;
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UsageData *usage;
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g_hash_table_iter_init (&iter, self->app_usages);
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while (g_hash_table_iter_next (&iter, NULL, (gpointer *) &usage))
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usage->score /= 2;
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}
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static void
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increment_usage_for_app_at_time (ShellAppUsage *self,
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ShellApp *app,
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long time)
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{
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UsageData *usage;
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guint elapsed;
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guint usage_count;
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usage = get_usage_for_app (self, app);
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usage->last_seen = time;
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elapsed = time - self->watch_start_time;
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usage_count = elapsed / FOCUS_TIME_MIN_SECONDS;
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if (usage_count > 0)
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{
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usage->score += usage_count;
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if (usage->score > SCORE_MAX)
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normalize_usage (self);
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ensure_queued_save (self);
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}
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}
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static void
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increment_usage_for_app (ShellAppUsage *self,
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ShellApp *app)
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{
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long curtime = get_time ();
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increment_usage_for_app_at_time (self, app, curtime);
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}
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static void
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on_app_state_changed (ShellAppSystem *app_system,
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ShellApp *app,
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gpointer user_data)
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{
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ShellAppUsage *self = SHELL_APP_USAGE (user_data);
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UsageData *usage;
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gboolean running;
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if (shell_app_is_window_backed (app))
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return;
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usage = get_usage_for_app (self, app);
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running = shell_app_get_state (app) == SHELL_APP_STATE_RUNNING;
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if (running)
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usage->last_seen = get_time ();
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}
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static void
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on_focus_app_changed (ShellWindowTracker *tracker,
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GParamSpec *spec,
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ShellAppUsage *self)
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{
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if (self->watched_app != NULL)
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increment_usage_for_app (self, self->watched_app);
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if (self->watched_app)
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g_object_unref (self->watched_app);
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g_object_get (tracker, "focus-app", &(self->watched_app), NULL);
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self->watch_start_time = get_time ();
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}
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static void
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on_session_status_changed (GDBusProxy *proxy,
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guint status,
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ShellAppUsage *self)
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{
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gboolean idle;
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idle = (status >= GNOME_SESSION_STATUS_IDLE);
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if (self->currently_idle == idle)
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return;
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self->currently_idle = idle;
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if (idle)
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{
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long end_time;
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/* The GNOME Session signal we watch is 5 minutes, but that's a long
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* time for this purpose. Instead, just add a base 30 seconds.
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*/
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if (self->watched_app)
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{
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end_time = self->watch_start_time + IDLE_TIME_TRANSITION_SECONDS;
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increment_usage_for_app_at_time (self, self->watched_app, end_time);
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}
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}
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else
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{
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/* Transitioning to !idle, reset the start time */
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self->watch_start_time = get_time ();
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}
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}
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static void
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session_proxy_signal (GDBusProxy *proxy, gchar *sender_name, gchar *signal_name, GVariant *parameters, gpointer user_data)
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{
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if (g_str_equal (signal_name, "StatusChanged"))
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{
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guint status;
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g_variant_get (parameters, "(u)", &status);
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on_session_status_changed (proxy, status, SHELL_APP_USAGE (user_data));
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}
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}
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static void
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shell_app_usage_init (ShellAppUsage *self)
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{
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ShellGlobal *global;
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char *shell_userdata_dir, *path;
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GDBusConnection *session_bus;
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ShellWindowTracker *tracker;
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ShellAppSystem *app_system;
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global = shell_global_get ();
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self->app_usages = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
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tracker = shell_window_tracker_get_default ();
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g_signal_connect (tracker, "notify::focus-app", G_CALLBACK (on_focus_app_changed), self);
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app_system = shell_app_system_get_default ();
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g_signal_connect (app_system, "app-state-changed", G_CALLBACK (on_app_state_changed), self);
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session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
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self->session_proxy = g_dbus_proxy_new_sync (session_bus,
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G_DBUS_PROXY_FLAGS_NONE,
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NULL, /* interface info */
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"org.gnome.SessionManager",
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"/org/gnome/SessionManager/Presence",
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"org.gnome.SessionManager",
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NULL, /* cancellable */
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NULL /* error */);
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g_signal_connect (self->session_proxy, "g-signal", G_CALLBACK (session_proxy_signal), self);
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g_object_unref (session_bus);
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self->currently_idle = FALSE;
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self->enable_monitoring = FALSE;
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g_object_get (global, "userdatadir", &shell_userdata_dir, NULL),
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path = g_build_filename (shell_userdata_dir, DATA_FILENAME, NULL);
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g_free (shell_userdata_dir);
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self->configfile = g_file_new_for_path (path);
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g_free (path);
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restore_from_file (self);
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self->privacy_settings = g_settings_new(PRIVACY_SCHEMA);
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g_signal_connect (self->privacy_settings,
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"changed::" ENABLE_MONITORING_KEY,
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G_CALLBACK (on_enable_monitoring_key_changed),
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self);
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update_enable_monitoring (self);
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}
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static void
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shell_app_usage_finalize (GObject *object)
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{
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ShellAppUsage *self = SHELL_APP_USAGE (object);
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if (self->save_id > 0)
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g_source_remove (self->save_id);
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g_object_unref (self->privacy_settings);
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g_object_unref (self->configfile);
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g_object_unref (self->session_proxy);
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G_OBJECT_CLASS (shell_app_usage_parent_class)->finalize(object);
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}
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static int
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sort_apps_by_usage (gconstpointer a,
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gconstpointer b,
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gpointer datap)
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{
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ShellAppUsage *self = datap;
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ShellApp *app_a, *app_b;
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UsageData *usage_a, *usage_b;
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app_a = (ShellApp*)a;
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app_b = (ShellApp*)b;
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usage_a = g_hash_table_lookup (self->app_usages, shell_app_get_id (app_a));
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usage_b = g_hash_table_lookup (self->app_usages, shell_app_get_id (app_b));
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return usage_b->score - usage_a->score;
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}
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/**
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* shell_app_usage_get_most_used:
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* @usage: the usage instance to request
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*
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* Returns: (element-type ShellApp) (transfer full): List of applications
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*/
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GSList *
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shell_app_usage_get_most_used (ShellAppUsage *self)
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{
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GSList *apps;
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char *appid;
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ShellAppSystem *appsys;
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GHashTableIter iter;
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appsys = shell_app_system_get_default ();
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g_hash_table_iter_init (&iter, self->app_usages);
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apps = NULL;
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while (g_hash_table_iter_next (&iter, (gpointer *) &appid, NULL))
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{
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ShellApp *app;
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app = shell_app_system_lookup_app (appsys, appid);
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if (!app)
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continue;
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apps = g_slist_prepend (apps, g_object_ref (app));
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}
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apps = g_slist_sort_with_data (apps, sort_apps_by_usage, self);
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return apps;
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}
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/**
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* shell_app_usage_compare:
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* @self: the usage instance to request
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* @id_a: ID of first app
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* @id_b: ID of second app
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*
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* Compare @id_a and @id_b based on frequency of use.
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*
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* Returns: -1 if @id_a ranks higher than @id_b, 1 if @id_b ranks higher
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* than @id_a, and 0 if both rank equally.
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*/
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int
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shell_app_usage_compare (ShellAppUsage *self,
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const char *id_a,
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const char *id_b)
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{
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UsageData *usage_a, *usage_b;
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usage_a = g_hash_table_lookup (self->app_usages, id_a);
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usage_b = g_hash_table_lookup (self->app_usages, id_b);
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if (usage_a == NULL && usage_b == NULL)
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return 0;
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else if (usage_a == NULL)
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return 1;
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else if (usage_b == NULL)
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return -1;
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return usage_b->score - usage_a->score;
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}
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static void
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ensure_queued_save (ShellAppUsage *self)
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{
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if (self->save_id != 0)
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return;
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self->save_id = g_timeout_add_seconds (SAVE_APPS_TIMEOUT_SECONDS, idle_save_application_usage, self);
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g_source_set_name_by_id (self->save_id, "[gnome-shell] idle_save_application_usage");
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}
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/* Clean up apps we see rarely.
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* The logic behind this is that if an app was seen less than SCORE_MIN times
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* and not seen for a week, it can probably be forgotten about.
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* This should much reduce the size of the list and avoid 'pollution'. */
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static gboolean
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idle_clean_usage (ShellAppUsage *self)
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{
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GHashTableIter iter;
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UsageData *usage;
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long current_time;
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long week_ago;
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current_time = get_time ();
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week_ago = current_time - (7 * 24 * 60 * 60);
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g_hash_table_iter_init (&iter, self->app_usages);
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while (g_hash_table_iter_next (&iter, NULL, (gpointer *) &usage))
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{
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if ((usage->score < SCORE_MIN) &&
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(usage->last_seen < week_ago))
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g_hash_table_iter_remove (&iter);
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}
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return FALSE;
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}
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static gboolean
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write_escaped (GDataOutputStream *stream,
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const char *str,
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GError **error)
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{
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gboolean ret;
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char *quoted = g_markup_escape_text (str, -1);
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ret = g_data_output_stream_put_string (stream, quoted, NULL, error);
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g_free (quoted);
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return ret;
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}
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static gboolean
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write_attribute_string (GDataOutputStream *stream,
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const char *elt_name,
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const char *str,
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GError **error)
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{
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gboolean ret = FALSE;
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char *elt;
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elt = g_strdup_printf (" %s=\"", elt_name);
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ret = g_data_output_stream_put_string (stream, elt, NULL, error);
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g_free (elt);
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if (!ret)
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goto out;
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ret = write_escaped (stream, str, error);
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if (!ret)
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goto out;
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ret = g_data_output_stream_put_string (stream, "\"", NULL, error);
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out:
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return ret;
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}
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static gboolean
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write_attribute_uint (GDataOutputStream *stream,
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const char *elt_name,
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guint value,
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GError **error)
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{
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gboolean ret;
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char *buf;
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buf = g_strdup_printf ("%u", value);
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ret = write_attribute_string (stream, elt_name, buf, error);
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g_free (buf);
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return ret;
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}
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static gboolean
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write_attribute_double (GDataOutputStream *stream,
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const char *elt_name,
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double value,
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GError **error)
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{
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gchar buf[G_ASCII_DTOSTR_BUF_SIZE];
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gboolean ret;
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g_ascii_dtostr (buf, sizeof (buf), value);
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ret = write_attribute_string (stream, elt_name, buf, error);
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|
|
|
return ret;
|
|
}
|
|
|
|
/* Save app data lists to file */
|
|
static gboolean
|
|
idle_save_application_usage (gpointer data)
|
|
{
|
|
ShellAppUsage *self = SHELL_APP_USAGE (data);
|
|
char *id;
|
|
GHashTableIter iter;
|
|
UsageData *usage;
|
|
GFileOutputStream *output;
|
|
GOutputStream *buffered_output;
|
|
GDataOutputStream *data_output;
|
|
GError *error = NULL;
|
|
|
|
self->save_id = 0;
|
|
|
|
/* Parent directory is already created by shell-global */
|
|
output = g_file_replace (self->configfile, NULL, FALSE, G_FILE_CREATE_NONE, NULL, &error);
|
|
if (!output)
|
|
{
|
|
g_debug ("Could not save applications usage data: %s", error->message);
|
|
g_error_free (error);
|
|
return FALSE;
|
|
}
|
|
buffered_output = g_buffered_output_stream_new (G_OUTPUT_STREAM (output));
|
|
g_object_unref (output);
|
|
data_output = g_data_output_stream_new (G_OUTPUT_STREAM (buffered_output));
|
|
g_object_unref (buffered_output);
|
|
|
|
if (!g_data_output_stream_put_string (data_output, "<?xml version=\"1.0\"?>\n<application-state>\n", NULL, &error))
|
|
goto out;
|
|
if (!g_data_output_stream_put_string (data_output, " <context id=\"\">\n", NULL, &error))
|
|
goto out;
|
|
|
|
g_hash_table_iter_init (&iter, self->app_usages);
|
|
|
|
while (g_hash_table_iter_next (&iter, (gpointer *) &id, (gpointer *) &usage))
|
|
{
|
|
ShellApp *app;
|
|
|
|
app = shell_app_system_lookup_app (shell_app_system_get_default(), id);
|
|
|
|
if (!app)
|
|
continue;
|
|
|
|
if (!g_data_output_stream_put_string (data_output, " <application", NULL, &error))
|
|
goto out;
|
|
if (!write_attribute_string (data_output, "id", id, &error))
|
|
goto out;
|
|
if (!write_attribute_double (data_output, "score", usage->score, &error))
|
|
goto out;
|
|
if (!write_attribute_uint (data_output, "last-seen", usage->last_seen, &error))
|
|
goto out;
|
|
if (!g_data_output_stream_put_string (data_output, "/>\n", NULL, &error))
|
|
goto out;
|
|
}
|
|
if (!g_data_output_stream_put_string (data_output, " </context>\n", NULL, &error))
|
|
goto out;
|
|
if (!g_data_output_stream_put_string (data_output, "</application-state>\n", NULL, &error))
|
|
goto out;
|
|
|
|
out:
|
|
if (!error)
|
|
g_output_stream_close_async (G_OUTPUT_STREAM (data_output), 0, NULL, NULL, NULL);
|
|
g_object_unref (data_output);
|
|
if (error)
|
|
{
|
|
g_debug ("Could not save applications usage data: %s", error->message);
|
|
g_error_free (error);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
shell_app_usage_start_element_handler (GMarkupParseContext *context,
|
|
const gchar *element_name,
|
|
const gchar **attribute_names,
|
|
const gchar **attribute_values,
|
|
gpointer user_data,
|
|
GError **error)
|
|
{
|
|
ShellAppUsage *self = user_data;
|
|
|
|
if (strcmp (element_name, "application-state") == 0)
|
|
{
|
|
}
|
|
else if (strcmp (element_name, "context") == 0)
|
|
{
|
|
}
|
|
else if (strcmp (element_name, "application") == 0)
|
|
{
|
|
const char **attribute;
|
|
const char **value;
|
|
UsageData *usage;
|
|
char *appid = NULL;
|
|
|
|
for (attribute = attribute_names, value = attribute_values; *attribute; attribute++, value++)
|
|
{
|
|
if (strcmp (*attribute, "id") == 0)
|
|
{
|
|
appid = g_strdup (*value);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!appid)
|
|
{
|
|
g_set_error (error,
|
|
G_MARKUP_ERROR,
|
|
G_MARKUP_ERROR_PARSE,
|
|
"Missing attribute id on <%s> element",
|
|
element_name);
|
|
return;
|
|
}
|
|
|
|
usage = g_new0 (UsageData, 1);
|
|
g_hash_table_insert (self->app_usages, appid, usage);
|
|
|
|
for (attribute = attribute_names, value = attribute_values; *attribute; attribute++, value++)
|
|
{
|
|
if (strcmp (*attribute, "score") == 0)
|
|
{
|
|
usage->score = g_ascii_strtod (*value, NULL);
|
|
}
|
|
else if (strcmp (*attribute, "last-seen") == 0)
|
|
{
|
|
usage->last_seen = (guint) g_ascii_strtoull (*value, NULL, 10);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
g_set_error (error,
|
|
G_MARKUP_ERROR,
|
|
G_MARKUP_ERROR_PARSE,
|
|
"Unknown element <%s>",
|
|
element_name);
|
|
}
|
|
}
|
|
|
|
static GMarkupParser app_state_parse_funcs =
|
|
{
|
|
shell_app_usage_start_element_handler,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
/* Load data about apps usage from file */
|
|
static void
|
|
restore_from_file (ShellAppUsage *self)
|
|
{
|
|
GFileInputStream *input;
|
|
GMarkupParseContext *parse_context;
|
|
GError *error = NULL;
|
|
char buf[1024];
|
|
|
|
input = g_file_read (self->configfile, NULL, &error);
|
|
if (error)
|
|
{
|
|
if (error->code != G_IO_ERROR_NOT_FOUND)
|
|
g_warning ("Could not load applications usage data: %s", error->message);
|
|
|
|
g_error_free (error);
|
|
return;
|
|
}
|
|
|
|
parse_context = g_markup_parse_context_new (&app_state_parse_funcs, 0, self, NULL);
|
|
|
|
while (TRUE)
|
|
{
|
|
gssize count = g_input_stream_read ((GInputStream*) input, buf, sizeof(buf), NULL, &error);
|
|
if (count <= 0)
|
|
goto out;
|
|
if (!g_markup_parse_context_parse (parse_context, buf, count, &error))
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
g_markup_parse_context_free (parse_context);
|
|
g_input_stream_close ((GInputStream*)input, NULL, NULL);
|
|
g_object_unref (input);
|
|
|
|
idle_clean_usage (self);
|
|
|
|
if (error)
|
|
{
|
|
g_warning ("Could not load applications usage data: %s", error->message);
|
|
g_error_free (error);
|
|
}
|
|
}
|
|
|
|
/* Enable or disable the timers, depending on the value of ENABLE_MONITORING_KEY
|
|
* and taking care of the previous state. If selfing is disabled, we still
|
|
* report apps usage based on (possibly) saved data, but don't collect data.
|
|
*/
|
|
static void
|
|
update_enable_monitoring (ShellAppUsage *self)
|
|
{
|
|
gboolean enable;
|
|
|
|
enable = g_settings_get_boolean (self->privacy_settings,
|
|
ENABLE_MONITORING_KEY);
|
|
|
|
/* Be sure not to start the timers if they were already set */
|
|
if (enable && !self->enable_monitoring)
|
|
{
|
|
on_focus_app_changed (shell_window_tracker_get_default (), NULL, self);
|
|
}
|
|
/* ...and don't try to stop them if they were not running */
|
|
else if (!enable && self->enable_monitoring)
|
|
{
|
|
if (self->watched_app)
|
|
g_object_unref (self->watched_app);
|
|
self->watched_app = NULL;
|
|
if (self->save_id)
|
|
{
|
|
g_source_remove (self->save_id);
|
|
self->save_id = 0;
|
|
}
|
|
}
|
|
|
|
self->enable_monitoring = enable;
|
|
}
|
|
|
|
/* Called when the ENABLE_MONITORING_KEY boolean has changed */
|
|
static void
|
|
on_enable_monitoring_key_changed (GSettings *settings,
|
|
const gchar *key,
|
|
ShellAppUsage *self)
|
|
{
|
|
update_enable_monitoring (self);
|
|
}
|
|
|
|
/**
|
|
* shell_app_usage_get_default:
|
|
*
|
|
* Return Value: (transfer none): The global #ShellAppUsage instance
|
|
*/
|
|
ShellAppUsage *
|
|
shell_app_usage_get_default (void)
|
|
{
|
|
static ShellAppUsage *instance;
|
|
|
|
if (instance == NULL)
|
|
instance = g_object_new (SHELL_TYPE_APP_USAGE, NULL);
|
|
|
|
return instance;
|
|
}
|