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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>
102 lines
4.2 KiB
C
102 lines
4.2 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright 2011 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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#ifndef __G_NETWORK_MONITOR_H__
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#define __G_NETWORK_MONITOR_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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/**
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* G_NETWORK_MONITOR_EXTENSION_POINT_NAME:
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*
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* Extension point for network status monitoring functionality.
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* See [Extending GIO](overview.html#extending-gio).
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*
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* Since: 2.30
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*/
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#define G_NETWORK_MONITOR_EXTENSION_POINT_NAME "gio-network-monitor"
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#define G_TYPE_NETWORK_MONITOR (g_network_monitor_get_type ())
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#define G_NETWORK_MONITOR(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_NETWORK_MONITOR, GNetworkMonitor))
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#define G_IS_NETWORK_MONITOR(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_NETWORK_MONITOR))
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#define G_NETWORK_MONITOR_GET_INTERFACE(o) (G_TYPE_INSTANCE_GET_INTERFACE ((o), G_TYPE_NETWORK_MONITOR, GNetworkMonitorInterface))
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typedef struct _GNetworkMonitorInterface GNetworkMonitorInterface;
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struct _GNetworkMonitorInterface {
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GTypeInterface g_iface;
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void (*network_changed) (GNetworkMonitor *monitor,
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gboolean network_available);
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gboolean (*can_reach) (GNetworkMonitor *monitor,
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GSocketConnectable *connectable,
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GCancellable *cancellable,
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GError **error);
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void (*can_reach_async) (GNetworkMonitor *monitor,
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GSocketConnectable *connectable,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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gboolean (*can_reach_finish) (GNetworkMonitor *monitor,
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GAsyncResult *result,
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GError **error);
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};
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GIO_AVAILABLE_IN_2_32
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GType g_network_monitor_get_type (void);
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GIO_AVAILABLE_IN_2_32
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GNetworkMonitor *g_network_monitor_get_default (void);
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GIO_AVAILABLE_IN_2_32
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gboolean g_network_monitor_get_network_available (GNetworkMonitor *monitor);
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GIO_AVAILABLE_IN_2_46
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gboolean g_network_monitor_get_network_metered (GNetworkMonitor *monitor);
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GIO_AVAILABLE_IN_2_44
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GNetworkConnectivity g_network_monitor_get_connectivity (GNetworkMonitor *monitor);
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GIO_AVAILABLE_IN_2_32
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gboolean g_network_monitor_can_reach (GNetworkMonitor *monitor,
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GSocketConnectable *connectable,
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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_network_monitor_can_reach_async (GNetworkMonitor *monitor,
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GSocketConnectable *connectable,
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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_network_monitor_can_reach_finish (GNetworkMonitor *monitor,
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GAsyncResult *result,
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GError **error);
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G_END_DECLS
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#endif /* __G_NETWORK_MONITOR_H__ */
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