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bffe058550
`DesktopFileDir` pointers are passed around between threads: they are
initially created on the main thread, but a pointer to them is passed to
the GLib worker thread in the file monitor callback
(`desktop_file_dir_changed()`).
Accordingly, the `DesktopFileDir` objects either have to be
(1) immutable;
(2) reference counted; or
(3) synchronised between the two threads
to avoid one of them being used by one thread after being freed on
another. Option (1) changed with commit 99bc33b6 and is no longer an
option. Option (3) would mean blocking the main thread on the worker
thread, which would be hard to achieve and is against the point of
having a worker thread. So that leaves option (2), which is implemented
here.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Fixes: #1903
107 lines
4.2 KiB
C
107 lines
4.2 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2006-2007 Red Hat, Inc.
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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: Alexander Larsson <alexl@redhat.com>
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*/
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#ifndef __G_LOCAL_FILE_MONITOR_H__
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#define __G_LOCAL_FILE_MONITOR_H__
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#include <gio/gfilemonitor.h>
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#include "gunixmounts.h"
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G_BEGIN_DECLS
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#define G_TYPE_LOCAL_FILE_MONITOR (g_local_file_monitor_get_type ())
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#define G_LOCAL_FILE_MONITOR(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_LOCAL_FILE_MONITOR, GLocalFileMonitor))
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#define G_LOCAL_FILE_MONITOR_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), G_TYPE_LOCAL_FILE_MONITOR, GLocalFileMonitorClass))
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#define G_IS_LOCAL_FILE_MONITOR(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_LOCAL_FILE_MONITOR))
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#define G_IS_LOCAL_FILE_MONITOR_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_LOCAL_FILE_MONITOR))
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#define G_LOCAL_FILE_MONITOR_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_LOCAL_FILE_MONITOR, GLocalFileMonitorClass))
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#define G_LOCAL_FILE_MONITOR_EXTENSION_POINT_NAME "gio-local-file-monitor"
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#define G_NFS_FILE_MONITOR_EXTENSION_POINT_NAME "gio-nfs-file-monitor"
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typedef struct _GLocalFileMonitor GLocalFileMonitor;
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typedef struct _GLocalFileMonitorClass GLocalFileMonitorClass;
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typedef struct _GFileMonitorSource GFileMonitorSource;
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struct _GLocalFileMonitor
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{
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GFileMonitor parent_instance;
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GFileMonitorSource *source;
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GUnixMountMonitor *mount_monitor;
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gboolean was_mounted;
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};
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struct _GLocalFileMonitorClass
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{
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GFileMonitorClass parent_class;
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gboolean (* is_supported) (void);
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void (* start) (GLocalFileMonitor *local_monitor,
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const gchar *dirname,
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const gchar *basename,
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const gchar *filename,
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GFileMonitorSource *source);
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gboolean mount_notify;
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};
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#ifdef G_OS_UNIX
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GLIB_AVAILABLE_IN_ALL
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#endif
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GType g_local_file_monitor_get_type (void) G_GNUC_CONST;
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/* for glocalfile.c */
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GFileMonitor *
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g_local_file_monitor_new_for_path (const gchar *pathname,
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gboolean is_directory,
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GFileMonitorFlags flags,
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GError **error);
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/* for various users in glib */
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typedef void (* GFileMonitorCallback) (GFileMonitor *monitor,
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GFile *child,
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GFile *other,
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GFileMonitorEvent event,
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gpointer user_data);
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GFileMonitor *
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g_local_file_monitor_new_in_worker (const gchar *pathname,
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gboolean is_directory,
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GFileMonitorFlags flags,
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GFileMonitorCallback callback,
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gpointer user_data,
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GClosureNotify destroy_user_data,
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GError **error);
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/* for implementations of GLocalFileMonitor */
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GLIB_AVAILABLE_IN_2_44
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gboolean
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g_file_monitor_source_handle_event (GFileMonitorSource *fms,
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GFileMonitorEvent event_type,
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const gchar *child,
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const gchar *rename_to,
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GFile *other,
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gint64 event_time);
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G_END_DECLS
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#endif /* __G_LOCAL_FILE_MONITOR_H__ */
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