[glib/pgriffis/low-power-monitor: 2/2] Add GPowerProfileMonitor
- From: Bastien Nocera <hadess src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [glib/pgriffis/low-power-monitor: 2/2] Add GPowerProfileMonitor
- Date: Wed, 28 Jul 2021 13:22:09 +0000 (UTC)
commit 933326035a53f419d8ac8f4bd507e7ec2311fc7a
Author: Patrick Griffis <pgriffis igalia com>
Date: Tue Jul 20 16:04:31 2021 -0500
Add GPowerProfileMonitor
docs/reference/gio/gio-docs.xml | 1 +
docs/reference/gio/gio-sections-common.txt | 19 +++
docs/reference/gio/meson.build | 1 +
gio/gio.h | 1 +
gio/giomodule.c | 7 +
gio/gpowerprofilemonitor.c | 141 +++++++++++++++++
gio/gpowerprofilemonitor.h | 63 ++++++++
gio/gpowerprofilemonitordbus.c | 240 +++++++++++++++++++++++++++++
gio/gpowerprofilemonitordbus.h | 32 ++++
gio/meson.build | 2 +
gio/tests/meson.build | 1 +
gio/tests/power-profile-monitor.c | 79 ++++++++++
12 files changed, 587 insertions(+)
---
diff --git a/docs/reference/gio/gio-docs.xml b/docs/reference/gio/gio-docs.xml
index a09d6d31d..b01133900 100644
--- a/docs/reference/gio/gio-docs.xml
+++ b/docs/reference/gio/gio-docs.xml
@@ -238,6 +238,7 @@
<xi:include href="xml/gmenuexporter.xml"/>
<xi:include href="xml/gdbusmenumodel.xml"/>
<xi:include href="xml/gnotification.xml"/>
+ <xi:include href="xml/gpowerprofilemonitor.xml"/>
</chapter>
<chapter id="extending">
<title>Extending GIO</title>
diff --git a/docs/reference/gio/gio-sections-common.txt b/docs/reference/gio/gio-sections-common.txt
index 250491a42..b7bd62ef5 100644
--- a/docs/reference/gio/gio-sections-common.txt
+++ b/docs/reference/gio/gio-sections-common.txt
@@ -4247,6 +4247,25 @@ G_NETWORK_MONITOR_GET_INTERFACE
g_network_connectivity_get_type
</SECTION>
+<SECTION>
+<FILE>gpowerprofilemonitor</FILE>
+<TITLE>GPowerProfileMonitor</TITLE>
+GPowerProfileMonitor
+GPowerProfileMonitorInterface
+GPowerProfileLevel
+G_POWER_PROFILE_MONITOR_EXTENSION_POINT_NAME
+g_power_profile_monitor_dup_default
+g_power_profile_get_active_profile
+<SUBSECTION Standard>
+g_power_profile_monitor_get_type
+G_TYPE_POWER_PROFILE_MONITOR
+G_POWER_PROFILE_MONITOR
+G_IS_POWER_PROFILE_MONITOR
+G_POWER_PROFILE_MONITOR_GET_INTERFACE
+G_TYPE_POWER_PROFILE_LEVEL
+g_power_profile_level_get_type
+</SECTION>
+
<SECTION>
<FILE>gmenuexporter</FILE>
g_dbus_connection_export_menu_model
diff --git a/docs/reference/gio/meson.build b/docs/reference/gio/meson.build
index 4d0364819..fbabd25ca 100644
--- a/docs/reference/gio/meson.build
+++ b/docs/reference/gio/meson.build
@@ -65,6 +65,7 @@ if get_option('gtk_doc')
'gopenuriportal.h',
'gpollfilemonitor.h',
'gportalsupport.h',
+ 'gpowerprofilemonitordbus.h',
'gproxyresolverportal.h',
'gregistrysettingsbackend.h',
'gresourcefile.h',
diff --git a/gio/gio.h b/gio/gio.h
index f5d2dd5a3..e9afab666 100644
--- a/gio/gio.h
+++ b/gio/gio.h
@@ -120,6 +120,7 @@
#include <gio/gpollableinputstream.h>
#include <gio/gpollableoutputstream.h>
#include <gio/gpollableutils.h>
+#include <gio/gpowerprofilemonitor.h>
#include <gio/gpropertyaction.h>
#include <gio/gproxy.h>
#include <gio/gproxyaddress.h>
diff --git a/gio/giomodule.c b/gio/giomodule.c
index c1d451b5c..dfd895717 100644
--- a/gio/giomodule.c
+++ b/gio/giomodule.c
@@ -48,6 +48,8 @@
#include "gmemorymonitor.h"
#include "gmemorymonitorportal.h"
#include "gmemorymonitordbus.h"
+#include "gpowerprofilemonitor.h"
+#include "gpowerprofilemonitordbus.h"
#ifdef G_OS_WIN32
#include "gregistrysettingsbackend.h"
#include "giowin32-priv.h"
@@ -1077,6 +1079,7 @@ extern GType _g_network_monitor_nm_get_type (void);
extern GType g_memory_monitor_dbus_get_type (void);
extern GType g_memory_monitor_portal_get_type (void);
+extern GType g_power_profile_monitor_dbus_get_type (void);
#ifdef G_OS_UNIX
extern GType g_fdo_notification_backend_get_type (void);
@@ -1187,6 +1190,9 @@ _g_io_modules_ensure_extension_points_registered (void)
ep = g_io_extension_point_register (G_MEMORY_MONITOR_EXTENSION_POINT_NAME);
g_io_extension_point_set_required_type (ep, G_TYPE_MEMORY_MONITOR);
+
+ ep = g_io_extension_point_register (G_POWER_PROFILE_MONITOR_EXTENSION_POINT_NAME);
+ g_io_extension_point_set_required_type (ep, G_TYPE_POWER_PROFILE_MONITOR);
}
G_UNLOCK (registered_extensions);
@@ -1272,6 +1278,7 @@ _g_io_modules_ensure_loaded (void)
g_type_ensure (g_null_settings_backend_get_type ());
g_type_ensure (g_memory_settings_backend_get_type ());
g_type_ensure (g_keyfile_settings_backend_get_type ());
+ g_type_ensure (g_power_profile_monitor_dbus_get_type ());
#if defined(HAVE_INOTIFY_INIT1)
g_type_ensure (g_inotify_file_monitor_get_type ());
#endif
diff --git a/gio/gpowerprofilemonitor.c b/gio/gpowerprofilemonitor.c
new file mode 100644
index 000000000..f5028b3e8
--- /dev/null
+++ b/gio/gpowerprofilemonitor.c
@@ -0,0 +1,141 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright 2019 Red Hat, Inc
+ * Copyright 2021 Igalia S.L.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+#include "glib.h"
+#include "glibintl.h"
+
+#include "gpowerprofilemonitor.h"
+#include "ginetaddress.h"
+#include "ginetsocketaddress.h"
+#include "ginitable.h"
+#include "gioenumtypes.h"
+#include "giomodule-priv.h"
+#include "gtask.h"
+
+/**
+ * SECTION:gpowerprofilemonitor
+ * @title: GPowerProfileMonitor
+ * @short_description: Power profile monitor
+ * @include: gio/gio.h
+ *
+ * #GPowerProfileMonitor makes it possible for applications as well as OS components
+ * to monitor system power profiles and act upon them. It currently only exports
+ * whether the system is in “Power Saver” mode (known as “Low Power” mode on
+ * some systems).
+ *
+ * When in “Low Power” mode, it is recommended that applications:
+ * - disabling automatic downloads
+ * - reduce the rate of refresh from online sources such as calendar or
+ * email synchronisation
+ * - if the application has expensive visual effects, reduce them
+ *
+ * It is also likely that OS components providing services to applications will
+ * lower their own background activity, for the sake of the system.
+ *
+ * There are a variety of tools that exist for power consumption analysis, but those
+ * usually depend on the OS and hardware used. On Linux, one could use `upower` to
+ * monitor the battery discharge rate, `powertop` to check on the background activity
+ * or activity at all), `sysprof` to inspect CPU usage, and `intel_gpu_time` to
+ * profile GPU usage.
+ *
+ * Don't forget to disconnect the #GPowerProfileMonitor::notify::power-saver-enabled
+ * signal, and unref the #GPowerProfileMonitor itself when exiting.
+ *
+ * Since: 2.70
+ */
+
+/**
+ * GPowerProfileMonitor:
+ *
+ * #GPowerProfileMonitor monitors system power profile and notifies on
+ * changes.
+ *
+ * Since: 2.70
+ */
+
+/**
+ * GPowerProfileMonitorInterface:
+ * @g_iface: The parent interface.
+ *
+ * The virtual function table for #GPowerProfileMonitor.
+ *
+ * Since: 2.70
+ */
+
+G_DEFINE_INTERFACE_WITH_CODE (GPowerProfileMonitor, g_power_profile_monitor, G_TYPE_OBJECT,
+ g_type_interface_add_prerequisite (g_define_type_id, G_TYPE_INITABLE))
+
+
+/**
+ * g_power_profile_monitor_dup_default:
+ *
+ * Gets a reference to the default #GPowerProfileMonitor for the system.
+ *
+ * Returns: (not nullable) (transfer full): a new reference to the default #GPowerProfileMonitor
+ *
+ * Since: 2.70
+ */
+GPowerProfileMonitor *
+g_power_profile_monitor_dup_default (void)
+{
+ return g_object_ref (_g_io_module_get_default (G_POWER_PROFILE_MONITOR_EXTENSION_POINT_NAME,
+ "GIO_USE_POWER_PROFILE_MONITOR",
+ NULL));
+}
+
+/**
+ * g_power_profile_monitor_get_power_saver_enabled:
+ * @monitor: a #GPowerProfileMonitor
+ *
+ * Gets whether the system is in “Power Saver” mode.
+ *
+ * You are expected to listen to the
+ * #GPowerProfileMonitor::notify::power-saver-enabled signal to know when the profile has
+ * changed.
+ *
+ * Returns: Whether the system is in “Power Saver” mode.
+ *
+ * Since: 2.70
+ */
+gboolean
+g_power_profile_monitor_get_power_saver_enabled (GPowerProfileMonitor *monitor)
+{
+ gboolean enabled;
+ g_object_get (monitor, "power-saver-enabled", &enabled, NULL);
+ return enabled;
+}
+
+static void
+g_power_profile_monitor_default_init (GPowerProfileMonitorInterface *iface)
+{
+ /**
+ * GPowerProfileMonitor:power-saver-enabled:
+ *
+ * Whether “Power Saver” mode is enabled on the system.
+ *
+ * Since: 2.70
+ */
+ g_object_interface_install_property (iface,
+ g_param_spec_boolean ("power-saver-enabled",
+ "power-saver-enabled",
+ "Power Saver Enabled",
+ FALSE,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS |
G_PARAM_EXPLICIT_NOTIFY));
+}
diff --git a/gio/gpowerprofilemonitor.h b/gio/gpowerprofilemonitor.h
new file mode 100644
index 000000000..0891fc3dc
--- /dev/null
+++ b/gio/gpowerprofilemonitor.h
@@ -0,0 +1,63 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright 2019 Red Hat, Inc.
+ * Copyright 2021 Igalia S.L.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __G_POWER_PROFILE_MONITOR_H__
+#define __G_POWER_PROFILE_MONITOR_H__
+
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
+#include <gio/giotypes.h>
+
+G_BEGIN_DECLS
+
+/**
+ * G_POWER_PROFILE_MONITOR_EXTENSION_POINT_NAME:
+ *
+ * Extension point for power profile usage monitoring functionality.
+ * See [Extending GIO][extending-gio].
+ *
+ * Since: 2.70
+ */
+#define G_POWER_PROFILE_MONITOR_EXTENSION_POINT_NAME "gio-power-profile-monitor"
+
+#define G_TYPE_POWER_PROFILE_MONITOR (g_power_profile_monitor_get_type ())
+GLIB_AVAILABLE_IN_2_70
+G_DECLARE_INTERFACE (GPowerProfileMonitor, g_power_profile_monitor, g, power_profile_monitor, GObject)
+
+#define G_POWER_PROFILE_MONITOR(o) (G_TYPE_CHECK_INSTANCE_CAST ((o),
G_TYPE_POWER_PROFILE_MONITOR, GPowerProfileMonitor))
+#define G_IS_POWER_PROFILE_MONITOR(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o),
G_TYPE_POWER_PROFILE_MONITOR))
+#define G_POWER_PROFILE_MONITOR_GET_INTERFACE(o) (G_TYPE_INSTANCE_GET_INTERFACE ((o),
G_TYPE_POWER_PROFILE_MONITOR, GPowerProfileMonitorInterface))
+
+struct _GPowerProfileMonitorInterface
+{
+ /*< private >*/
+ GTypeInterface g_iface;
+};
+
+GLIB_AVAILABLE_IN_2_70
+GPowerProfileMonitor *g_power_profile_monitor_dup_default (void);
+
+GLIB_AVAILABLE_IN_2_70
+gboolean g_power_profile_monitor_get_power_saver_enabled (GPowerProfileMonitor *monitor);
+
+G_END_DECLS
+
+#endif /* __G_POWER_PROFILE_MONITOR_H__ */
diff --git a/gio/gpowerprofilemonitordbus.c b/gio/gpowerprofilemonitordbus.c
new file mode 100644
index 000000000..8bbfe3acc
--- /dev/null
+++ b/gio/gpowerprofilemonitordbus.c
@@ -0,0 +1,240 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright 2019 Red Hat, Inc.
+ * Copyrgith 2021 Igalia S.L.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gpowerprofilemonitor.h"
+#include "gpowerprofilemonitordbus.h"
+#include "gioerror.h"
+#include "ginitable.h"
+#include "giomodule-priv.h"
+#include "glibintl.h"
+#include "glib/gstdio.h"
+#include "gcancellable.h"
+#include "gdbusproxy.h"
+#include "gdbusnamewatching.h"
+
+#define G_POWER_PROFILE_MONITOR_DBUS_GET_INITABLE_IFACE(o) (G_TYPE_INSTANCE_GET_INTERFACE ((o),
G_TYPE_INITABLE, GInitable))
+
+static void g_power_profile_monitor_dbus_iface_init (GPowerProfileMonitorInterface *iface);
+static void g_power_profile_monitor_dbus_initable_iface_init (GInitableIface *iface);
+
+struct _GPowerProfileMonitorDBus
+{
+ GObject parent_instance;
+
+ guint watch_id;
+ GCancellable *cancellable;
+ GDBusProxy *proxy;
+ gulong signal_id;
+
+ gboolean power_saver_enabled;
+};
+
+typedef enum
+{
+ PROP_POWER_SAVER_ENABLED = 1,
+} GPowerProfileMonitorDBusProperty;
+
+#define POWERPROFILES_DBUS_NAME "net.hadess.PowerProfiles"
+#define POWERPROFILES_DBUS_IFACE "net.hadess.PowerProfiles"
+#define POWERPROFILES_DBUS_PATH "/net/hadess/PowerProfiles"
+
+G_DEFINE_TYPE_WITH_CODE (GPowerProfileMonitorDBus, g_power_profile_monitor_dbus, G_TYPE_OBJECT,
+ G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
+ g_power_profile_monitor_dbus_initable_iface_init)
+ G_IMPLEMENT_INTERFACE (G_TYPE_POWER_PROFILE_MONITOR,
+ g_power_profile_monitor_dbus_iface_init)
+ _g_io_modules_ensure_extension_points_registered ();
+ g_io_extension_point_implement (G_POWER_PROFILE_MONITOR_EXTENSION_POINT_NAME,
+ g_define_type_id,
+ "dbus",
+ 30))
+
+static void
+g_power_profile_monitor_dbus_init (GPowerProfileMonitorDBus *dbus)
+{
+ dbus->power_saver_enabled = FALSE;
+}
+
+static void
+ppd_properties_changed_cb (GDBusProxy *proxy,
+ GVariant *changed_properties,
+ GStrv *invalidated_properties,
+ gpointer user_data)
+{
+ GPowerProfileMonitorDBus *dbus = user_data;
+ const char *active_profile;
+ gboolean enabled;
+
+ if (!g_variant_lookup (changed_properties, "ActiveProfile", "&s", &active_profile))
+ return;
+
+ enabled = g_strcmp0 (active_profile, "power-saver") == 0;
+ if (enabled == dbus->power_saver_enabled)
+ return;
+
+ dbus->power_saver_enabled = enabled;
+ g_object_notify (G_OBJECT (dbus), "power-saver-enabled");
+}
+
+static void
+ppd_proxy_cb (GObject *source_object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ GPowerProfileMonitorDBus *dbus = user_data;
+ GVariant *active_profile_variant;
+ GDBusProxy *proxy;
+ GError *error = NULL;
+ const char *active_profile;
+ gboolean power_saver_enabled;
+
+ proxy = g_dbus_proxy_new_finish (res, &error);
+ if (!proxy)
+ {
+ g_debug ("GPowerProfileMonitorDBus: Failed to create PowerProfiles D-Bus proxy: %s",
+ error->message);
+ g_error_free (error);
+ return;
+ }
+
+ active_profile_variant = g_dbus_proxy_get_cached_property (proxy, "ActiveProfile");
+ if (g_variant_is_of_type (active_profile_variant, G_VARIANT_TYPE_STRING))
+ {
+ active_profile = g_variant_get_string (active_profile_variant, NULL);
+ power_saver_enabled = g_strcmp0 (active_profile, "power-saver") == 0;
+ if (power_saver_enabled != dbus->power_saver_enabled)
+ {
+ dbus->power_saver_enabled = power_saver_enabled;
+ g_object_notify (G_OBJECT (dbus), "power-saver-enabled");
+ }
+ }
+
+ dbus->signal_id = g_signal_connect (G_OBJECT (proxy), "g-properties-changed",
+ G_CALLBACK (ppd_properties_changed_cb), dbus);
+ dbus->proxy = g_steal_pointer (&proxy);
+}
+
+static void
+ppd_appeared_cb (GDBusConnection *connection,
+ const gchar *name,
+ const gchar *name_owner,
+ gpointer user_data)
+{
+ GPowerProfileMonitorDBus *dbus = user_data;
+
+ g_dbus_proxy_new (connection,
+ G_DBUS_PROXY_FLAGS_NONE,
+ NULL,
+ POWERPROFILES_DBUS_NAME,
+ POWERPROFILES_DBUS_PATH,
+ POWERPROFILES_DBUS_IFACE,
+ dbus->cancellable,
+ ppd_proxy_cb,
+ dbus);
+}
+
+static void
+ppd_vanished_cb (GDBusConnection *connection,
+ const gchar *name,
+ gpointer user_data)
+{
+ GPowerProfileMonitorDBus *dbus = user_data;
+
+ g_clear_signal_handler (&dbus->signal_id, dbus->proxy);
+ g_clear_object (&dbus->proxy);
+
+ dbus->power_saver_enabled = FALSE;
+ g_object_notify (G_OBJECT (dbus), "power-saver-enabled");
+}
+
+static void
+g_power_profile_monitor_dbus_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GPowerProfileMonitorDBus *dbus = G_POWER_PROFILE_MONITOR_DBUS (object);
+
+ switch ((GPowerProfileMonitorDBusProperty) prop_id)
+ {
+ case PROP_POWER_SAVER_ENABLED:
+ g_value_set_boolean (value, dbus->power_saver_enabled);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+}
+
+static gboolean
+g_power_profile_monitor_dbus_initable_init (GInitable *initable,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GPowerProfileMonitorDBus *dbus = G_POWER_PROFILE_MONITOR_DBUS (initable);
+
+ dbus->cancellable = g_cancellable_new ();
+ dbus->watch_id = g_bus_watch_name (G_BUS_TYPE_SYSTEM,
+ POWERPROFILES_DBUS_NAME,
+ G_BUS_NAME_WATCHER_FLAGS_AUTO_START,
+ ppd_appeared_cb,
+ ppd_vanished_cb,
+ dbus,
+ NULL);
+
+ return TRUE;
+}
+
+static void
+g_power_profile_monitor_dbus_finalize (GObject *object)
+{
+ GPowerProfileMonitorDBus *dbus = G_POWER_PROFILE_MONITOR_DBUS (object);
+
+ g_cancellable_cancel (dbus->cancellable);
+ g_clear_object (&dbus->cancellable);
+ g_clear_signal_handler (&dbus->signal_id, dbus->proxy);
+ g_clear_object (&dbus->proxy);
+ g_clear_handle_id (&dbus->watch_id, g_bus_unwatch_name);
+
+ G_OBJECT_CLASS (g_power_profile_monitor_dbus_parent_class)->finalize (object);
+}
+
+static void
+g_power_profile_monitor_dbus_class_init (GPowerProfileMonitorDBusClass *nl_class)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (nl_class);
+
+ gobject_class->get_property = g_power_profile_monitor_dbus_get_property;
+ gobject_class->finalize = g_power_profile_monitor_dbus_finalize;
+
+ g_object_class_override_property (gobject_class, PROP_POWER_SAVER_ENABLED, "power-saver-enabled");
+}
+
+static void
+g_power_profile_monitor_dbus_iface_init (GPowerProfileMonitorInterface *monitor_iface)
+{
+}
+
+static void
+g_power_profile_monitor_dbus_initable_iface_init (GInitableIface *iface)
+{
+ iface->init = g_power_profile_monitor_dbus_initable_init;
+}
diff --git a/gio/gpowerprofilemonitordbus.h b/gio/gpowerprofilemonitordbus.h
new file mode 100644
index 000000000..ecf7246d1
--- /dev/null
+++ b/gio/gpowerprofilemonitordbus.h
@@ -0,0 +1,32 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright 2019 Red Hat, Inc.
+ * Copyright 2021 Igalia S.L.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __G_POWER_PROFILE_MONITOR_DBUS_H__
+#define __G_POWER_PROFILE_MONITOR_DBUS_H__
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define G_TYPE_POWER_PROFILE_MONITOR_DBUS (g_power_profile_monitor_dbus_get_type ())
+G_DECLARE_FINAL_TYPE (GPowerProfileMonitorDBus, g_power_profile_monitor_dbus, G, POWER_PROFILE_MONITOR_DBUS,
GObject)
+
+G_END_DECLS
+
+#endif /* __G_POWER_PROFILE_MONITOR_DBUS_H__ */
diff --git a/gio/meson.build b/gio/meson.build
index 49a37a7bd..050ce7606 100644
--- a/gio/meson.build
+++ b/gio/meson.build
@@ -533,6 +533,8 @@ gio_sources = files(
'gpollableoutputstream.c',
'gpollableutils.c',
'gpollfilemonitor.c',
+ 'gpowerprofilemonitor.c',
+ 'gpowerprofilemonitordbus.c',
'gproxy.c',
'gproxyaddress.c',
'gproxyaddressenumerator.c',
diff --git a/gio/tests/meson.build b/gio/tests/meson.build
index 98d1401d0..fc2055101 100644
--- a/gio/tests/meson.build
+++ b/gio/tests/meson.build
@@ -75,6 +75,7 @@ gio_tests = {
'network-monitor-race' : {},
'permission' : {},
'pollable' : {'dependencies' : [libdl_dep]},
+ 'power-profile-monitor' : {},
'proxy-test' : {},
'readwrite' : {},
'simple-async-result' : {},
diff --git a/gio/tests/power-profile-monitor.c b/gio/tests/power-profile-monitor.c
new file mode 100644
index 000000000..bb32f181f
--- /dev/null
+++ b/gio/tests/power-profile-monitor.c
@@ -0,0 +1,79 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright 2021 Igalia S.L.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <gio/gio.h>
+
+static void
+test_dup_default (void)
+{
+ GPowerProfileMonitor *monitor;
+
+ monitor = g_power_profile_monitor_dup_default ();
+ g_assert_nonnull (monitor);
+ g_object_unref (monitor);
+}
+
+static void
+power_saver_enabled_cb (GPowerProfileMonitor *monitor,
+ GParamSpec *pspec,
+ gpointer user_data)
+{
+ gboolean enabled;
+
+ enabled = g_power_profile_monitor_get_power_saver_enabled (monitor);
+ g_debug ("Power Saver %s (%d)", enabled ? "enabled" : "disabled", enabled);
+}
+
+static void
+do_watch_power_profile (void)
+{
+ GPowerProfileMonitor *monitor;
+ GMainLoop *loop;
+ gulong signal_id;
+
+ monitor = g_power_profile_monitor_dup_default ();
+ signal_id = g_signal_connect (G_OBJECT (monitor), "notify::power-saver-enabled",
+ G_CALLBACK (power_saver_enabled_cb), NULL);
+
+ loop = g_main_loop_new (NULL, TRUE);
+ g_main_loop_run (loop);
+
+ g_signal_handler_disconnect (monitor, signal_id);
+ g_object_unref (monitor);
+ g_main_loop_unref (loop);
+}
+
+int
+main (int argc, char **argv)
+{
+ int ret;
+
+ if (argc == 2 && !strcmp (argv[1], "--watch"))
+ {
+ do_watch_power_profile ();
+ return 0;
+ }
+
+ g_test_init (&argc, &argv, NULL);
+
+ g_test_add_func ("/power-profile-monitor/default", test_dup_default);
+
+ ret = g_test_run ();
+
+ return ret;
+}
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