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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>
124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2010 Collabora Ltd.
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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: Nicolas Dufresne <nicolas.dufresne@collabora.co.uk>
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*/
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#ifndef __G_PROXY_H__
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#define __G_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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G_BEGIN_DECLS
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#define G_TYPE_PROXY (g_proxy_get_type ())
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#define G_PROXY(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_PROXY, GProxy))
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#define G_IS_PROXY(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_PROXY))
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#define G_PROXY_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), G_TYPE_PROXY, GProxyInterface))
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/**
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* G_PROXY_EXTENSION_POINT_NAME:
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*
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* Extension point for proxy functionality.
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* See [Extending GIO](overview.html#extending-gio).
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*
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* Since: 2.26
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*/
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#define G_PROXY_EXTENSION_POINT_NAME "gio-proxy"
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typedef struct _GProxyInterface GProxyInterface;
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/**
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* GProxyInterface:
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* @g_iface: The parent interface.
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* @connect: Connect to proxy server and wrap (if required) the #connection
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* to handle payload.
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* @connect_async: Same as connect() but asynchronous.
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* @connect_finish: Returns the result of connect_async()
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* @supports_hostname: Returns whether the proxy supports hostname lookups.
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*
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* Provides an interface for handling proxy connection and payload.
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*
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* Since: 2.26
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*/
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struct _GProxyInterface
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{
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GTypeInterface g_iface;
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/* Virtual Table */
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GIOStream * (* connect) (GProxy *proxy,
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GIOStream *connection,
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GProxyAddress *proxy_address,
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GCancellable *cancellable,
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GError **error);
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void (* connect_async) (GProxy *proxy,
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GIOStream *connection,
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GProxyAddress *proxy_address,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GIOStream * (* connect_finish) (GProxy *proxy,
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GAsyncResult *result,
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GError **error);
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gboolean (* supports_hostname) (GProxy *proxy);
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};
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GIO_AVAILABLE_IN_ALL
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GType g_proxy_get_type (void);
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GIO_AVAILABLE_IN_ALL
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GProxy *g_proxy_get_default_for_protocol (const gchar *protocol);
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GIO_AVAILABLE_IN_ALL
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GIOStream *g_proxy_connect (GProxy *proxy,
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GIOStream *connection,
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GProxyAddress *proxy_address,
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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_proxy_connect_async (GProxy *proxy,
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GIOStream *connection,
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GProxyAddress *proxy_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_ALL
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GIOStream *g_proxy_connect_finish (GProxy *proxy,
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GAsyncResult *result,
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GError **error);
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GIO_AVAILABLE_IN_ALL
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gboolean g_proxy_supports_hostname (GProxy *proxy);
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G_END_DECLS
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#endif /* __G_PROXY_H__ */
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