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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>
118 lines
5.0 KiB
C
118 lines
5.0 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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* Copyright © 2008 Christian Kellner, Samuel Cormier-Iijima
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* Copyright © 2009 Codethink Limited
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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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* Authors: Christian Kellner <gicmo@gnome.org>
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* Samuel Cormier-Iijima <sciyoshi@gmail.com>
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* Ryan Lortie <desrt@desrt.ca>
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* Alexander Larsson <alexl@redhat.com>
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*/
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#ifndef __G_SOCKET_CONNECTION_H__
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#define __G_SOCKET_CONNECTION_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 <glib-object.h>
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#include <gio/gsocket.h>
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#include <gio/giostream.h>
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G_BEGIN_DECLS
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#define G_TYPE_SOCKET_CONNECTION (g_socket_connection_get_type ())
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#define G_SOCKET_CONNECTION(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
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G_TYPE_SOCKET_CONNECTION, GSocketConnection))
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#define G_SOCKET_CONNECTION_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), \
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G_TYPE_SOCKET_CONNECTION, GSocketConnectionClass))
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#define G_IS_SOCKET_CONNECTION(inst) (G_TYPE_CHECK_INSTANCE_TYPE ((inst), \
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G_TYPE_SOCKET_CONNECTION))
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#define G_IS_SOCKET_CONNECTION_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), \
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G_TYPE_SOCKET_CONNECTION))
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#define G_SOCKET_CONNECTION_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), \
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G_TYPE_SOCKET_CONNECTION, GSocketConnectionClass))
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typedef struct _GSocketConnectionPrivate GSocketConnectionPrivate;
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typedef struct _GSocketConnectionClass GSocketConnectionClass;
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struct _GSocketConnectionClass
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{
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GIOStreamClass parent_class;
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/* Padding for future expansion */
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void (*_g_reserved1) (void);
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void (*_g_reserved2) (void);
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void (*_g_reserved3) (void);
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void (*_g_reserved4) (void);
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void (*_g_reserved5) (void);
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void (*_g_reserved6) (void);
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};
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struct _GSocketConnection
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{
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GIOStream parent_instance;
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GSocketConnectionPrivate *priv;
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};
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GIO_AVAILABLE_IN_ALL
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GType g_socket_connection_get_type (void);
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GIO_AVAILABLE_IN_2_32
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gboolean g_socket_connection_is_connected (GSocketConnection *connection);
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GIO_AVAILABLE_IN_2_32
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gboolean g_socket_connection_connect (GSocketConnection *connection,
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GSocketAddress *address,
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GCancellable *cancellable,
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GError **error);
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GIO_AVAILABLE_IN_2_32
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void g_socket_connection_connect_async (GSocketConnection *connection,
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GSocketAddress *address,
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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_2_32
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gboolean g_socket_connection_connect_finish (GSocketConnection *connection,
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GAsyncResult *result,
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GError **error);
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GIO_AVAILABLE_IN_ALL
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GSocket *g_socket_connection_get_socket (GSocketConnection *connection);
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GIO_AVAILABLE_IN_ALL
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GSocketAddress *g_socket_connection_get_local_address (GSocketConnection *connection,
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GError **error);
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GIO_AVAILABLE_IN_ALL
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GSocketAddress *g_socket_connection_get_remote_address (GSocketConnection *connection,
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GError **error);
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GIO_AVAILABLE_IN_ALL
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void g_socket_connection_factory_register_type (GType g_type,
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GSocketFamily family,
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GSocketType type,
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gint protocol);
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GIO_AVAILABLE_IN_ALL
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GType g_socket_connection_factory_lookup_type (GSocketFamily family,
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GSocketType type,
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gint protocol_id);
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GIO_AVAILABLE_IN_ALL
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GSocketConnection *g_socket_connection_factory_create_connection (GSocket *socket);
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G_END_DECLS
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#endif /* __G_SOCKET_CONNECTION_H__ */
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