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0c8f7de55a
This is intended to provide a uniform interface for controlling whether the debug output from an application (or service) is emitted, typically to journald, but actually to wherever the application chooses to output it. The main implementation of `GDebugController` is `GDebugControllerDBus`, which is intended to be used on Linux. Other implementations may be added in future for other platforms, or larger applications may want to provide their own implementation which integrates with their ecosystem. The `GDebugControllerDBus` implementation exposes a D-Bus interface at `/org/gtk/Debugging` with a method to enable or disable debug output at runtime. This could be used by external harnesses, such as GNOME Builder or systemd, to give a uniform way to get debug output from an application. Signed-off-by: Philip Withnall <pwithnall@endlessos.org> Fixes: #1190
133 lines
4.2 KiB
C
133 lines
4.2 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright © 2021 Endless OS Foundation, LLC
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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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* SPDX-License-Identifier: LGPL-2.1-or-later
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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 "gdebugcontroller.h"
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#include "ginitable.h"
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#include "giomodule-priv.h"
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/**
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* SECTION:gdebugcontroller
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* @title: GDebugController
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* @short_description: Debugging controller
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* @include: gio/gio.h
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*
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* #GDebugController is an interface to expose control of debugging features and
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* debug output.
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*
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* It is implemented on Linux using #GDebugControllerDBus, which exposes a D-Bus
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* interface to allow authenticated peers to control debug features in this
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* process.
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*
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* Whether debug output is enabled is exposed as
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* #GDebugController:debug-enabled. This controls g_log_set_debug_enabled() by
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* default. Application code may connect to the #GObject::notify signal for it
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* to control other parts of its debug infrastructure as necessary.
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*
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* Since: 2.72
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*/
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G_DEFINE_INTERFACE_WITH_CODE (GDebugController, g_debug_controller, 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_debug_controller_dup_default:
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*
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* Gets a reference to the default #GDebugController for the system.
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*
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* Returns: (not nullable) (transfer full): a new reference to the default #GDebugController
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*
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* Since: 2.72
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*/
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GDebugController *
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g_debug_controller_dup_default (void)
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{
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return g_object_ref (_g_io_module_get_default (G_DEBUG_CONTROLLER_EXTENSION_POINT_NAME,
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"GIO_USE_DEBUG_CONTROLLER",
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NULL));
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}
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static void
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g_debug_controller_default_init (GDebugControllerInterface *iface)
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{
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/**
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* GDebugController:debug-enabled:
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*
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* %TRUE if debug output should be exposed (for example by forwarding it to
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* the journal), %FALSE otherwise.
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*
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* Since: 2.72
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*/
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g_object_interface_install_property (iface,
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g_param_spec_boolean ("debug-enabled",
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"Debug Enabled",
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"Whether to expose debug output",
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FALSE,
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G_PARAM_READWRITE |
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G_PARAM_STATIC_STRINGS |
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G_PARAM_EXPLICIT_NOTIFY));
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}
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/**
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* g_debug_controller_get_debug_enabled:
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* @self: a #GDebugController
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*
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* Get the value of #GDebugController:debug-enabled.
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*
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* Returns: %TRUE if debug output should be exposed, %FALSE otherwise
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* Since: 2.72
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*/
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gboolean
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g_debug_controller_get_debug_enabled (GDebugController *self)
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{
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gboolean enabled;
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g_return_val_if_fail (G_IS_DEBUG_CONTROLLER (self), FALSE);
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g_object_get (G_OBJECT (self),
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"debug-enabled", &enabled,
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NULL);
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return enabled;
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}
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/**
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* g_debug_controller_set_debug_enabled:
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* @self: a #GDebugController
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* @debug_enabled: %TRUE if debug output should be exposed, %FALSE otherwise
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*
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* Set the value of #GDebugController:debug-enabled.
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*
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* Since: 2.72
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*/
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void
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g_debug_controller_set_debug_enabled (GDebugController *self,
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gboolean debug_enabled)
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{
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g_return_if_fail (G_IS_DEBUG_CONTROLLER (self));
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g_object_set (G_OBJECT (self),
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"debug-enabled", debug_enabled,
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NULL);
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}
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