mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2026-10-24 00:49:00 +03:00
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>
116 lines
4.9 KiB
C
116 lines
4.9 KiB
C
/* GIO - GLib Input, Output and Streaming Library
|
|
*
|
|
* Copyright © 2009 Codethink Limited
|
|
*
|
|
* SPDX-License-Identifier: LGPL-2.1-or-later
|
|
*
|
|
* 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/>.
|
|
*
|
|
* Authors: Ryan Lortie <desrt@desrt.ca>
|
|
*/
|
|
|
|
#ifndef __G_SOCKET_CONTROL_MESSAGE_H__
|
|
#define __G_SOCKET_CONTROL_MESSAGE_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
|
|
|
|
#define G_TYPE_SOCKET_CONTROL_MESSAGE (g_socket_control_message_get_type ())
|
|
#define G_SOCKET_CONTROL_MESSAGE(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
|
|
G_TYPE_SOCKET_CONTROL_MESSAGE, \
|
|
GSocketControlMessage))
|
|
#define G_SOCKET_CONTROL_MESSAGE_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), \
|
|
G_TYPE_SOCKET_CONTROL_MESSAGE, \
|
|
GSocketControlMessageClass))
|
|
#define G_IS_SOCKET_CONTROL_MESSAGE(inst) (G_TYPE_CHECK_INSTANCE_TYPE ((inst), \
|
|
G_TYPE_SOCKET_CONTROL_MESSAGE))
|
|
#define G_IS_SOCKET_CONTROL_MESSAGE_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), \
|
|
G_TYPE_SOCKET_CONTROL_MESSAGE))
|
|
#define G_SOCKET_CONTROL_MESSAGE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), \
|
|
G_TYPE_SOCKET_CONTROL_MESSAGE, \
|
|
GSocketControlMessageClass))
|
|
|
|
typedef struct _GSocketControlMessagePrivate GSocketControlMessagePrivate;
|
|
typedef struct _GSocketControlMessageClass GSocketControlMessageClass;
|
|
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC (GSocketControlMessage, g_object_unref)
|
|
|
|
/**
|
|
* GSocketControlMessageClass:
|
|
* @get_size: gets the size of the message.
|
|
* @get_level: gets the protocol of the message.
|
|
* @get_type: gets the protocol specific type of the message.
|
|
* @serialize: Writes out the message data.
|
|
* @deserialize: Tries to deserialize a message.
|
|
*
|
|
* Class structure for #GSocketControlMessage.
|
|
**/
|
|
|
|
struct _GSocketControlMessageClass
|
|
{
|
|
GObjectClass parent_class;
|
|
|
|
gsize (* get_size) (GSocketControlMessage *message);
|
|
int (* get_level) (GSocketControlMessage *message);
|
|
int (* get_type) (GSocketControlMessage *message);
|
|
void (* serialize) (GSocketControlMessage *message,
|
|
gpointer data);
|
|
GSocketControlMessage *(* deserialize) (int level,
|
|
int type,
|
|
gsize size,
|
|
gpointer data);
|
|
|
|
/*< private >*/
|
|
|
|
/* Padding for future expansion */
|
|
void (*_g_reserved1) (void);
|
|
void (*_g_reserved2) (void);
|
|
void (*_g_reserved3) (void);
|
|
void (*_g_reserved4) (void);
|
|
void (*_g_reserved5) (void);
|
|
};
|
|
|
|
struct _GSocketControlMessage
|
|
{
|
|
GObject parent_instance;
|
|
GSocketControlMessagePrivate *priv;
|
|
};
|
|
|
|
GIO_AVAILABLE_IN_ALL
|
|
GType g_socket_control_message_get_type (void);
|
|
GIO_AVAILABLE_IN_ALL
|
|
gsize g_socket_control_message_get_size (GSocketControlMessage *message);
|
|
GIO_AVAILABLE_IN_ALL
|
|
int g_socket_control_message_get_level (GSocketControlMessage *message);
|
|
GIO_AVAILABLE_IN_ALL
|
|
int g_socket_control_message_get_msg_type (GSocketControlMessage *message);
|
|
GIO_AVAILABLE_IN_ALL
|
|
void g_socket_control_message_serialize (GSocketControlMessage *message,
|
|
gpointer data);
|
|
GIO_AVAILABLE_IN_ALL
|
|
GSocketControlMessage *g_socket_control_message_deserialize (int level,
|
|
int type,
|
|
gsize size,
|
|
gpointer data);
|
|
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __G_SOCKET_CONTROL_MESSAGE_H__ */
|