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gdbus: Initialize types earlier to break proxy <-> connection deadlock

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This will help us break generic GType deadlocks between people using
GDBus in different threads (which is supported), not just by GType
usage in the GDBus thread.

This should fix the common cases we're seeing in the wild, although I
have some lingering concerns that if someone e.g. referenced
e.g. `G_TYPE_DBUS_AUTH_MECHANISM_SHA1` etc. we'd need to add those
too.

https://bugzilla.gnome.org/show_bug.cgi?id=674885
This commit is contained in:
Colin Walters
2016-11-18 16:26:58 -05:00
parent 07465176da
commit 5b4b827e99
1 changed files with 7 additions and 4 deletions
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11
gio/gdbusprivate.c
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@@ -202,7 +202,8 @@ _g_socket_read_with_control_messages_finish (GSocket *socket,
/* ---------------------------------------------------------------------------------------------------- */
/* Work-around for https://bugzilla.gnome.org/show_bug.cgi?id=627724 */
/* Work-around for https://bugzilla.gnome.org/show_bug.cgi?id=674885
and see also the original https://bugzilla.gnome.org/show_bug.cgi?id=627724 */
static GPtrArray *ensured_classes = NULL;
@@ -227,6 +228,8 @@ ensure_required_types (void)
ensured_classes = g_ptr_array_new ();
ensure_type (G_TYPE_TASK);
ensure_type (G_TYPE_MEMORY_INPUT_STREAM);
ensure_type (G_TYPE_DBUS_CONNECTION);
ensure_type (G_TYPE_DBUS_PROXY);
}
/* ---------------------------------------------------------------------------------------------------- */
@@ -264,9 +267,6 @@ _g_dbus_shared_thread_ref (void)
{
SharedThreadData *data;
/* Work-around for https://bugzilla.gnome.org/show_bug.cgi?id=627724 */
ensure_required_types ();
data = g_new0 (SharedThreadData, 1);
data->refcount = 0;
@@ -1921,6 +1921,9 @@ _g_dbus_initialize (void)
_gdbus_debug_flags |= G_DBUS_DEBUG_MESSAGE;
}
/* Work-around for https://bugzilla.gnome.org/show_bug.cgi?id=627724 */
ensure_required_types ();
g_once_init_leave (&initialized, 1);
}
}