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0d268c4825
Nicks and blurbs don't have any practical use for gio/gobject libraries. Leaving tests untouched since this features is still used by other libraries. Closes #2991
131 lines
4.3 KiB
C
131 lines
4.3 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright 2019 Red Hat, Inc
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* Copyright 2021 Igalia S.L.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "glib.h"
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#include "glibintl.h"
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#include "gpowerprofilemonitor.h"
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#include "ginetaddress.h"
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#include "ginetsocketaddress.h"
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#include "ginitable.h"
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#include "gioenumtypes.h"
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#include "giomodule-priv.h"
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#include "gtask.h"
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/**
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* GPowerProfileMonitor:
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*
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* `GPowerProfileMonitor` makes it possible for applications as well as OS
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* components to monitor system power profiles and act upon them. It currently
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* only exports whether the system is in “Power Saver” mode (known as
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* “Low Power” mode on some systems).
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*
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* When in “Low Power” mode, it is recommended that applications:
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* - disable automatic downloads;
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* - reduce the rate of refresh from online sources such as calendar or
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* email synchronisation;
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* - reduce the use of expensive visual effects.
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*
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* It is also likely that OS components providing services to applications will
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* lower their own background activity, for the sake of the system.
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*
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* There are a variety of tools that exist for power consumption analysis, but those
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* usually depend on the OS and hardware used. On Linux, one could use `upower` to
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* monitor the battery discharge rate, `powertop` to check on the background activity
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* or activity at all), `sysprof` to inspect CPU usage, and `intel_gpu_time` to
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* profile GPU usage.
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*
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* Don’t forget to disconnect the [signal@GObject.Object::notify] signal for
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* [property@Gio.PowerProfileMonitor:power-saver-enabled], and unref the
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* `GPowerProfileMonitor` itself when exiting.
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*
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* Since: 2.70
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*/
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/**
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* GPowerProfileMonitorInterface:
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* @g_iface: The parent interface.
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*
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* The virtual function table for #GPowerProfileMonitor.
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*
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* Since: 2.70
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*/
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G_DEFINE_INTERFACE_WITH_CODE (GPowerProfileMonitor, g_power_profile_monitor, G_TYPE_OBJECT,
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g_type_interface_add_prerequisite (g_define_type_id, G_TYPE_INITABLE))
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/**
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* g_power_profile_monitor_dup_default:
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*
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* Gets a reference to the default #GPowerProfileMonitor for the system.
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*
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* Returns: (not nullable) (transfer full): a new reference to the default #GPowerProfileMonitor
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*
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* Since: 2.70
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*/
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GPowerProfileMonitor *
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g_power_profile_monitor_dup_default (void)
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{
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return g_object_ref (_g_io_module_get_default (G_POWER_PROFILE_MONITOR_EXTENSION_POINT_NAME,
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"GIO_USE_POWER_PROFILE_MONITOR",
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NULL));
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}
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/**
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* g_power_profile_monitor_get_power_saver_enabled:
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* @monitor: a #GPowerProfileMonitor
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*
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* Gets whether the system is in “Power Saver” mode.
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*
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* You are expected to listen to the
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* #GPowerProfileMonitor::notify::power-saver-enabled signal to know when the profile has
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* changed.
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*
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* Returns: Whether the system is in “Power Saver” mode.
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*
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* Since: 2.70
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*/
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gboolean
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g_power_profile_monitor_get_power_saver_enabled (GPowerProfileMonitor *monitor)
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{
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gboolean enabled;
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g_object_get (monitor, "power-saver-enabled", &enabled, NULL);
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return enabled;
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}
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static void
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g_power_profile_monitor_default_init (GPowerProfileMonitorInterface *iface)
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{
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/**
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* GPowerProfileMonitor:power-saver-enabled:
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*
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* Whether “Power Saver” mode is enabled on the system.
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*
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* Since: 2.70
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*/
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g_object_interface_install_property (iface,
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g_param_spec_boolean ("power-saver-enabled", NULL, NULL,
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FALSE,
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G_PARAM_READABLE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY));
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}
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