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016829559e
g_type_ensure has a large comment saying _get_type shouldn't be marked with G_GNUC_CONST because it has side-effects on the first run, but it's OK if you consistently call g_type_ensure first. Unfortunately, this isn't accurate. GCC trunk (observed at r17-1725-ge259a182e1f100) now analyses points-to information more effectively and propagates its findings, so it sees the function modifies some global state, concludes that can't be possible (because of the const attribute), and deletes the stores. pure unfortunately is unsuitable for *_get_type too as it has a side-effect (writes to global memory). Mesa had a similar issue which I fixed recently [0]. glib and glibmm likely want the (not-yet-implemented) 'idempotent' attribute instead [1]. In fact, this exact problem is what motivated that request! :) ebassi mentions an alternative to the current setup as well, using atomics [2]. This problem has gone back many years but the compiler has finally fully outsmarted us here, so give in. [0] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/42361 [1] https://gcc.gnu.org/PR32911 [2] https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4249#note_2583110 Fixes: https://gitlab.gnome.org/GNOME/glib/-/work_items/3984 Signed-off-by: Sam James <sam@gentoo.org>
213 lines
12 KiB
C
213 lines
12 KiB
C
/* GDBus - GLib D-Bus Library
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*
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* Copyright (C) 2008-2010 Red Hat, Inc.
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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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* Author: David Zeuthen <davidz@redhat.com>
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*/
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#ifndef __G_DBUS_PROXY_H__
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#define __G_DBUS_PROXY_H__
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#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
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#error "Only <gio/gio.h> can be included directly."
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#endif
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#include <gio/giotypes.h>
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#include <gio/gdbusintrospection.h>
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G_BEGIN_DECLS
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#define G_TYPE_DBUS_PROXY (g_dbus_proxy_get_type ())
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#define G_DBUS_PROXY(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_DBUS_PROXY, GDBusProxy))
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#define G_DBUS_PROXY_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_DBUS_PROXY, GDBusProxyClass))
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#define G_DBUS_PROXY_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_DBUS_PROXY, GDBusProxyClass))
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#define G_IS_DBUS_PROXY(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_DBUS_PROXY))
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#define G_IS_DBUS_PROXY_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_DBUS_PROXY))
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typedef struct _GDBusProxyClass GDBusProxyClass;
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typedef struct _GDBusProxyPrivate GDBusProxyPrivate;
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struct _GDBusProxy
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{
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/*< private >*/
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GObject parent_instance;
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GDBusProxyPrivate *priv;
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};
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/**
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* GDBusProxyClass:
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* @g_properties_changed: Signal class handler for the #GDBusProxy::g-properties-changed signal.
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* @g_signal: Signal class handler for the #GDBusProxy::g-signal signal.
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*
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* Class structure for #GDBusProxy.
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*
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* Since: 2.26
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*/
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struct _GDBusProxyClass
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{
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/*< private >*/
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GObjectClass parent_class;
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/*< public >*/
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/* Signals */
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void (*g_properties_changed) (GDBusProxy *proxy,
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GVariant *changed_properties,
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const gchar* const *invalidated_properties);
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void (*g_signal) (GDBusProxy *proxy,
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const gchar *sender_name,
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const gchar *signal_name,
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GVariant *parameters);
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/*< private >*/
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/* Padding for future expansion */
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gpointer padding[32];
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};
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GIO_AVAILABLE_IN_ALL
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GType g_dbus_proxy_get_type (void);
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GIO_AVAILABLE_IN_ALL
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void g_dbus_proxy_new (GDBusConnection *connection,
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GDBusProxyFlags flags,
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GDBusInterfaceInfo *info,
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const gchar *name,
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const gchar *object_path,
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const gchar *interface_name,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GIO_AVAILABLE_IN_ALL
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GDBusProxy *g_dbus_proxy_new_finish (GAsyncResult *res,
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GError **error);
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GIO_AVAILABLE_IN_ALL
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GDBusProxy *g_dbus_proxy_new_sync (GDBusConnection *connection,
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GDBusProxyFlags flags,
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GDBusInterfaceInfo *info,
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const gchar *name,
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const gchar *object_path,
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const gchar *interface_name,
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GCancellable *cancellable,
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GError **error);
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GIO_AVAILABLE_IN_ALL
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void g_dbus_proxy_new_for_bus (GBusType bus_type,
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GDBusProxyFlags flags,
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GDBusInterfaceInfo *info,
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const gchar *name,
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const gchar *object_path,
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const gchar *interface_name,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GIO_AVAILABLE_IN_ALL
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GDBusProxy *g_dbus_proxy_new_for_bus_finish (GAsyncResult *res,
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GError **error);
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GIO_AVAILABLE_IN_ALL
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GDBusProxy *g_dbus_proxy_new_for_bus_sync (GBusType bus_type,
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GDBusProxyFlags flags,
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GDBusInterfaceInfo *info,
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const gchar *name,
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const gchar *object_path,
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const gchar *interface_name,
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GCancellable *cancellable,
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GError **error);
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GIO_AVAILABLE_IN_ALL
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GDBusConnection *g_dbus_proxy_get_connection (GDBusProxy *proxy);
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GIO_AVAILABLE_IN_ALL
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GDBusProxyFlags g_dbus_proxy_get_flags (GDBusProxy *proxy);
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GIO_AVAILABLE_IN_ALL
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const gchar *g_dbus_proxy_get_name (GDBusProxy *proxy);
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GIO_AVAILABLE_IN_ALL
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gchar *g_dbus_proxy_get_name_owner (GDBusProxy *proxy);
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GIO_AVAILABLE_IN_ALL
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const gchar *g_dbus_proxy_get_object_path (GDBusProxy *proxy);
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GIO_AVAILABLE_IN_ALL
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const gchar *g_dbus_proxy_get_interface_name (GDBusProxy *proxy);
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GIO_AVAILABLE_IN_ALL
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gint g_dbus_proxy_get_default_timeout (GDBusProxy *proxy);
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GIO_AVAILABLE_IN_ALL
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void g_dbus_proxy_set_default_timeout (GDBusProxy *proxy,
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gint timeout_msec);
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GIO_AVAILABLE_IN_ALL
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GDBusInterfaceInfo *g_dbus_proxy_get_interface_info (GDBusProxy *proxy);
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GIO_AVAILABLE_IN_ALL
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void g_dbus_proxy_set_interface_info (GDBusProxy *proxy,
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GDBusInterfaceInfo *info);
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GIO_AVAILABLE_IN_ALL
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GVariant *g_dbus_proxy_get_cached_property (GDBusProxy *proxy,
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const gchar *property_name);
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GIO_AVAILABLE_IN_ALL
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void g_dbus_proxy_set_cached_property (GDBusProxy *proxy,
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const gchar *property_name,
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GVariant *value);
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GIO_AVAILABLE_IN_ALL
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gchar **g_dbus_proxy_get_cached_property_names (GDBusProxy *proxy);
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GIO_AVAILABLE_IN_ALL
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void g_dbus_proxy_call (GDBusProxy *proxy,
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const gchar *method_name,
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GVariant *parameters,
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GDBusCallFlags flags,
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gint timeout_msec,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GIO_AVAILABLE_IN_ALL
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GVariant *g_dbus_proxy_call_finish (GDBusProxy *proxy,
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GAsyncResult *res,
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GError **error);
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GIO_AVAILABLE_IN_ALL
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GVariant *g_dbus_proxy_call_sync (GDBusProxy *proxy,
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const gchar *method_name,
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GVariant *parameters,
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GDBusCallFlags flags,
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gint timeout_msec,
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GCancellable *cancellable,
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GError **error);
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#ifdef G_OS_UNIX
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GIO_AVAILABLE_IN_ALL
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void g_dbus_proxy_call_with_unix_fd_list (GDBusProxy *proxy,
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const gchar *method_name,
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GVariant *parameters,
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GDBusCallFlags flags,
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gint timeout_msec,
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GUnixFDList *fd_list,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GIO_AVAILABLE_IN_ALL
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GVariant *g_dbus_proxy_call_with_unix_fd_list_finish (GDBusProxy *proxy,
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GUnixFDList **out_fd_list,
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GAsyncResult *res,
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GError **error);
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GIO_AVAILABLE_IN_ALL
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GVariant *g_dbus_proxy_call_with_unix_fd_list_sync (GDBusProxy *proxy,
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const gchar *method_name,
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GVariant *parameters,
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GDBusCallFlags flags,
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gint timeout_msec,
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GUnixFDList *fd_list,
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GUnixFDList **out_fd_list,
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GCancellable *cancellable,
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GError **error);
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#endif /* G_OS_UNIX */
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G_END_DECLS
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#endif /* __G_DBUS_PROXY_H__ */
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