Revision 72ed9e04394746495f021133915e6bf7c1d3b5b1 authored by Michael Catanzaro on 25 May 2019, 23:30:12 UTC, committed by Michael Catanzaro on 26 May 2019, 15:17:15 UTC
The GTask must be destroyed on the thread that is running its GMainContext, i.e. the thread that started the task. It must never be destroyed on the actual task thread when running with g_task_run_in_thread(), because when it is destroyed, it will unref its source object and destroy its user data (if a GDestroyNotify was set for the data using g_task_set_task_data()). The source object and task data might not be safe to destroy on a secondary thread, though, so this is incorrect. We have to ensure they are destroyed on the task's context's thread. There are different ways we could do this, but the simplest by far is to ensure the task thread has unreffed the task before the context's thread executes the callback. And that is simple enough to do using a condition variable. We have to keep a static global map of all GTasks with outstanding task threads, which is slightly unfortunate, but we already have a bunch of global data in this file for managing the thread pool, and the map will only contain tasks that are currently running in threads, so it should be small. Fixes #1346
1 parent e10eff1
gunixmounts.h
/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
*
* 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/>.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#ifndef __G_UNIX_MOUNTS_H__
#define __G_UNIX_MOUNTS_H__
#include <gio/gio.h>
G_BEGIN_DECLS
/**
* GUnixMountEntry:
*
* Defines a Unix mount entry (e.g. <filename>/media/cdrom</filename>).
* This corresponds roughly to a mtab entry.
**/
typedef struct _GUnixMountEntry GUnixMountEntry;
#define G_TYPE_UNIX_MOUNT_ENTRY (g_unix_mount_entry_get_type ())
GLIB_AVAILABLE_IN_2_54
GType g_unix_mount_entry_get_type (void) G_GNUC_CONST;
/**
* GUnixMountPoint:
*
* Defines a Unix mount point (e.g. <filename>/dev</filename>).
* This corresponds roughly to a fstab entry.
**/
typedef struct _GUnixMountPoint GUnixMountPoint;
#define G_TYPE_UNIX_MOUNT_POINT (g_unix_mount_point_get_type ())
GLIB_AVAILABLE_IN_2_54
GType g_unix_mount_point_get_type (void) G_GNUC_CONST;
/**
* GUnixMountMonitor:
*
* Watches #GUnixMounts for changes.
**/
typedef struct _GUnixMountMonitor GUnixMountMonitor;
typedef struct _GUnixMountMonitorClass GUnixMountMonitorClass;
#define G_TYPE_UNIX_MOUNT_MONITOR (g_unix_mount_monitor_get_type ())
#define G_UNIX_MOUNT_MONITOR(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_UNIX_MOUNT_MONITOR, GUnixMountMonitor))
#define G_UNIX_MOUNT_MONITOR_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_UNIX_MOUNT_MONITOR, GUnixMountMonitorClass))
#define G_IS_UNIX_MOUNT_MONITOR(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_UNIX_MOUNT_MONITOR))
#define G_IS_UNIX_MOUNT_MONITOR_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_UNIX_MOUNT_MONITOR))
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GUnixMountMonitor, g_object_unref)
GLIB_AVAILABLE_IN_ALL
void g_unix_mount_free (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_2_54
GUnixMountEntry *g_unix_mount_copy (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_ALL
void g_unix_mount_point_free (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_2_54
GUnixMountPoint *g_unix_mount_point_copy (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
gint g_unix_mount_compare (GUnixMountEntry *mount1,
GUnixMountEntry *mount2);
GLIB_AVAILABLE_IN_ALL
const char * g_unix_mount_get_mount_path (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_ALL
const char * g_unix_mount_get_device_path (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_2_60
const char * g_unix_mount_get_root_path (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_ALL
const char * g_unix_mount_get_fs_type (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_2_58
const char * g_unix_mount_get_options (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_mount_is_readonly (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_mount_is_system_internal (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_mount_guess_can_eject (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_mount_guess_should_display (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_ALL
char * g_unix_mount_guess_name (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_ALL
GIcon * g_unix_mount_guess_icon (GUnixMountEntry *mount_entry);
GLIB_AVAILABLE_IN_ALL
GIcon * g_unix_mount_guess_symbolic_icon (GUnixMountEntry *mount_entry);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GUnixMountEntry, g_unix_mount_free)
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GUnixMountPoint, g_unix_mount_point_free)
GLIB_AVAILABLE_IN_ALL
gint g_unix_mount_point_compare (GUnixMountPoint *mount1,
GUnixMountPoint *mount2);
GLIB_AVAILABLE_IN_ALL
const char * g_unix_mount_point_get_mount_path (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
const char * g_unix_mount_point_get_device_path (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
const char * g_unix_mount_point_get_fs_type (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_2_32
const char * g_unix_mount_point_get_options (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_mount_point_is_readonly (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_mount_point_is_user_mountable (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_mount_point_is_loopback (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_mount_point_guess_can_eject (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
char * g_unix_mount_point_guess_name (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
GIcon * g_unix_mount_point_guess_icon (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
GIcon * g_unix_mount_point_guess_symbolic_icon (GUnixMountPoint *mount_point);
GLIB_AVAILABLE_IN_ALL
GList * g_unix_mount_points_get (guint64 *time_read);
GLIB_AVAILABLE_IN_ALL
GList * g_unix_mounts_get (guint64 *time_read);
GLIB_AVAILABLE_IN_ALL
GUnixMountEntry *g_unix_mount_at (const char *mount_path,
guint64 *time_read);
GLIB_AVAILABLE_IN_2_52
GUnixMountEntry *g_unix_mount_for (const char *file_path,
guint64 *time_read);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_mounts_changed_since (guint64 time);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_mount_points_changed_since (guint64 time);
GLIB_AVAILABLE_IN_ALL
GType g_unix_mount_monitor_get_type (void) G_GNUC_CONST;
GLIB_AVAILABLE_IN_2_44
GUnixMountMonitor *g_unix_mount_monitor_get (void);
GLIB_DEPRECATED_IN_2_44_FOR(g_unix_mount_monitor_get)
GUnixMountMonitor *g_unix_mount_monitor_new (void);
GLIB_DEPRECATED_IN_2_44
void g_unix_mount_monitor_set_rate_limit (GUnixMountMonitor *mount_monitor,
int limit_msec);
GLIB_AVAILABLE_IN_ALL
gboolean g_unix_is_mount_path_system_internal (const char *mount_path);
GLIB_AVAILABLE_IN_2_56
gboolean g_unix_is_system_fs_type (const char *fs_type);
GLIB_AVAILABLE_IN_2_56
gboolean g_unix_is_system_device_path (const char *device_path);
G_END_DECLS
#endif /* __G_UNIX_MOUNTS_H__ */
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