[glib/pgriffis/low-power-monitor] Add GPowerProfileMonitor
- From: Patrick Griffis <pgriffis src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [glib/pgriffis/low-power-monitor] Add GPowerProfileMonitor
- Date: Tue, 20 Jul 2021 21:15:33 +0000 (UTC)
commit c28ea9fbd63cdd2ee3a3e5420fa67c211043b525
Author: Patrick Griffis <pgriffis igalia com>
Date: Tue Jul 20 16:04:31 2021 -0500
Add GPowerProfileMonitor
gio/gio.h | 1 +
gio/gioenums.h | 6 +
gio/giomodule.c | 6 +
gio/gpowerprofilemonitor.c | 115 +++++++++++++++++
gio/gpowerprofilemonitor.h | 65 ++++++++++
gio/gpowerprofilemonitordbus.c | 252 ++++++++++++++++++++++++++++++++++++++
gio/gpowerprofilemonitordbus.h | 32 +++++
gio/meson.build | 2 +
gio/tests/meson.build | 1 +
gio/tests/power-profile-monitor.c | 92 ++++++++++++++
10 files changed, 572 insertions(+)
---
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/gioenums.h b/gio/gioenums.h
index d81ada416..035e4a816 100644
--- a/gio/gioenums.h
+++ b/gio/gioenums.h
@@ -2101,6 +2101,12 @@ typedef enum {
G_MEMORY_MONITOR_WARNING_LEVEL_CRITICAL = 255
} GMemoryMonitorWarningLevel;
+typedef enum {
+ G_POWER_PROFILE_LEVEL_POWER_SAVER = 0,
+ G_POWER_PROFILE_LEVEL_BALANCED,
+ G_POWER_PROFILE_LEVEL_PERFORMANCE
+} GPowerProfileLevel;
+
G_END_DECLS
#endif /* __GIO_ENUMS_H__ */
diff --git a/gio/giomodule.c b/gio/giomodule.c
index d3b5e482a..836aae72d 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"
@@ -1185,6 +1187,9 @@ _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);
@@ -1270,6 +1275,7 @@ _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..8464525dd
--- /dev/null
+++ b/gio/gpowerprofilemonitor.c
@@ -0,0 +1,115 @@
+/* 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 will monitor system power profile...
+ *
+ * See #GPowerProfileLevel for details on the various profiles.
+ *
+ * Don't forget to disconnect the #GPowerProfileMonitor::power-profile-changed
+ * signal, and unref the #GPowerProfileMonitor itself when exiting.
+ *
+ * Since: 2.72
+ */
+
+/**
+ * GPowerProfileMonitor:
+ *
+ * #GPowerProfileMonitor monitors system power profile and notifies on
+ * changes.
+ *
+ * Since: 2.72
+ */
+
+/**
+ * GPowerProfileMonitorInterface:
+ * @g_iface: The parent interface.
+ *
+ * The virtual function table for #GPowerProfileMonitor.
+ *
+ * Since: 2.72
+ */
+
+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: 2.72
+ */
+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_active_profile:
+ *
+ * Gets current #GPowerProfileLevel. You are expected to listen to the `notify::active-profile`
+ * signal to know when the profile has changed.
+ *
+ * Returns: The current power profile.
+ *
+ * Since: 2.72
+ */
+GPowerProfileLevel
+g_power_profile_monitor_get_active_profile (GPowerProfileMonitor *monitor)
+{
+ GPowerProfileLevel active_profile;
+ g_object_get (monitor, "active-profile", &active_profile, NULL);
+ return active_profile;
+}
+
+static void
+g_power_profile_monitor_default_init (GPowerProfileMonitorInterface *iface)
+{
+ g_object_interface_install_property (iface,
+ g_param_spec_enum ("active-profile",
+ "active-profile",
+ "Active power profile",
+ G_TYPE_POWER_PROFILE_LEVEL,
+ G_POWER_PROFILE_LEVEL_BALANCED,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+}
diff --git a/gio/gpowerprofilemonitor.h b/gio/gpowerprofilemonitor.h
new file mode 100644
index 000000000..c4765ea6a
--- /dev/null
+++ b/gio/gpowerprofilemonitor.h
@@ -0,0 +1,65 @@
+/* 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: 2.72
+ */
+#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;
+
+ void (*_g_reserved1) (void);
+ void (*_g_reserved2) (void);
+};
+
+GLIB_AVAILABLE_IN_2_70
+GPowerProfileMonitor *g_power_profile_monitor_dup_default (void);
+
+GLIB_AVAILABLE_IN_2_70
+GPowerProfileLevel g_power_profile_monitor_get_active_profile (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..86562f17c
--- /dev/null
+++ b/gio/gpowerprofilemonitordbus.c
@@ -0,0 +1,252 @@
+/* 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 "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;
+ GDBusProxy *proxy;
+ gulong signal_id;
+
+ GPowerProfileLevel active_profile;
+};
+
+enum
+{
+ PROP_0,
+ PROP_ACTIVE_PROFILE,
+ N_PROPS
+};
+
+#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->active_profile = G_POWER_PROFILE_LEVEL_BALANCED;
+}
+
+static GPowerProfileLevel
+profile_from_string (const char *str)
+{
+ if (strcmp (str, "balanced") == 0)
+ return G_POWER_PROFILE_LEVEL_BALANCED;
+ else if (strcmp (str, "power-saver") == 0)
+ return G_POWER_PROFILE_LEVEL_POWER_SAVER;
+ else if (strcmp (str, "performance") == 0)
+ return G_POWER_PROFILE_LEVEL_PERFORMANCE;
+ else
+ {
+ g_debug ("GPowerProfileMonitorDBus: Recieved unknown power profile %s", str);
+ return G_POWER_PROFILE_LEVEL_BALANCED;
+ }
+}
+
+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;
+
+ if (g_variant_lookup (changed_properties, "ActiveProfile", "&s", &active_profile))
+ {
+ dbus->active_profile = profile_from_string (active_profile);
+ g_object_notify (G_OBJECT (dbus), "active-profile");
+ }
+}
+
+static void
+ppd_appeared_cb (GDBusConnection *connection,
+ const gchar *name,
+ const gchar *name_owner,
+ gpointer user_data)
+{
+ GPowerProfileMonitorDBus *dbus = user_data;
+ GVariant *active_profile_variant;
+ GPowerProfileLevel active_profile;
+ GDBusProxy *proxy;
+ GVariant *response;
+ GError *error = NULL;
+
+ proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+ G_DBUS_PROXY_FLAGS_NONE,
+ NULL,
+ POWERPROFILES_DBUS_NAME,
+ POWERPROFILES_DBUS_PATH,
+ POWERPROFILES_DBUS_IFACE,
+ NULL,
+ &error);
+
+ if (!proxy)
+ {
+ g_debug ("GPowerProfileMonitorDBus: Failed to create PowerProfiles D-Bus proxy: %s",
+ error->message);
+ g_error_free (error);
+ return;
+ }
+
+ response = g_dbus_proxy_call_sync (proxy,
+ "org.freedesktop.DBus.Properties.Get",
+ g_variant_new ("(ss)", POWERPROFILES_DBUS_IFACE, "ActiveProfile"),
+ G_DBUS_CALL_FLAGS_NONE,
+ 20,
+ NULL,
+ &error);
+
+ if (!response)
+ {
+ g_debug ("GPowerProfileMonitorDBus: Failed to get ActiveProfile: %s",
+ error->message);
+ g_error_free (error);
+ g_object_unref (proxy);
+ return;
+ }
+
+ g_variant_get (response, "(v)", &active_profile_variant);
+ active_profile = profile_from_string (g_variant_get_string (active_profile_variant, NULL));
+
+ if (dbus->active_profile != active_profile)
+ {
+ dbus->active_profile = active_profile;
+ g_object_notify (G_OBJECT (dbus), "active-profile");
+ }
+
+ 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);
+ g_variant_unref (response);
+}
+
+static void
+ppd_vanished_cb (GDBusConnection *connection,
+ const gchar *name,
+ gpointer user_data)
+{
+ GPowerProfileMonitorDBus *dbus = user_data;
+
+ if (dbus->proxy != NULL)
+ g_clear_signal_handler (&dbus->signal_id, dbus->proxy);
+ g_clear_object (&dbus->proxy);
+}
+
+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 (prop_id)
+ {
+ case PROP_ACTIVE_PROFILE:
+ g_value_set_enum (value, dbus->active_profile);
+ 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->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);
+
+ if (dbus->proxy != NULL)
+ 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_ACTIVE_PROFILE, "active-profile");
+}
+
+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..87f603183
--- /dev/null
+++ b/gio/tests/power-profile-monitor.c
@@ -0,0 +1,92 @@
+/* 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 const char *
+get_level_string (GMemoryMonitorWarningLevel level)
+{
+ GEnumClass *eclass;
+ GEnumValue *value;
+
+ eclass = G_ENUM_CLASS (g_type_class_peek (G_TYPE_POWER_PROFILE_LEVEL));
+ value = g_enum_get_value (eclass, level);
+
+ if (value == NULL)
+ return "unknown";
+
+ return value->value_nick;
+}
+
+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
+active_profile_cb (GPowerProfileMonitor *monitor,
+ GParamSpec *pspec,
+ gpointer user_data)
+{
+ GPowerProfileLevel power_level;
+ const char *str;
+
+ power_level = g_power_profile_monitor_get_active_profile (monitor);
+ str = get_level_string (power_level);
+ g_debug ("Power level: %s (%d)", str , power_level);
+}
+
+static void
+do_watch_power_profile (void)
+{
+ GPowerProfileMonitor *monitor;
+ GMainLoop *loop;
+
+ monitor = g_power_profile_monitor_dup_default ();
+ g_signal_connect (G_OBJECT (monitor), "notify::active-profile",
+ G_CALLBACK (active_profile_cb), NULL);
+
+ loop = g_main_loop_new (NULL, TRUE);
+ g_main_loop_run (loop);
+ g_object_unref (monitor);
+}
+
+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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