[gvfs] Always call back from mainloop in g_daemon_file_find_enclosing_mount_async

[Christian Kellner <gicmo src gnome org>]

commit f5b66ae4ab494f020106a92d0e6c9a4ad1730813
Author: Christian Kellner <gicmo gnome org>
Date:   Fri Feb 19 12:36:33 2010 +0100

    Always call back from mainloop in g_daemon_file_find_enclosing_mount_async
    
    On cache hit g_daemon_file_find_enclosing_mount_async would immediately
    call the callback function which breaks the aysnc-pattern contract.
    Fixes bug #609002.

 client/gdaemonvfs.c |   24 ++++++++++++++++++------
 1 files changed, 18 insertions(+), 6 deletions(-)
---
diff --git a/client/gdaemonvfs.c b/client/gdaemonvfs.c
index 7035837..96a65e8 100644
--- a/client/gdaemonvfs.c
+++ b/client/gdaemonvfs.c
@@ -863,6 +863,7 @@ handler_lookup_mount_reply (DBusMessage *reply,
 typedef struct {
   GMountInfoLookupCallback callback;
   gpointer user_data;
+  GMountInfo *info;
 } GetMountInfoData;
 
 static void
@@ -893,6 +894,16 @@ async_get_mount_info_response (DBusMessage *reply,
   g_free (data);
 }
 
+static gboolean
+async_get_mount_info_cache_hit (gpointer _data)
+{
+  GetMountInfoData *data = _data;
+  data->callback (data->info, data->user_data, NULL);
+  g_mount_info_unref (data->info);
+  g_free (data);
+  return FALSE;
+}
+
 void
 _g_daemon_vfs_get_mount_info_async (GMountSpec *spec,
 				    const char *path,
@@ -903,13 +914,17 @@ _g_daemon_vfs_get_mount_info_async (GMountSpec *spec,
   GetMountInfoData *data;
   DBusMessage *message;
   DBusMessageIter iter;
-  
+
+  data = g_new0 (GetMountInfoData, 1);
+  data->callback = callback;
+  data->user_data = user_data;
+
   info = lookup_mount_info_in_cache (spec, path);
 
   if (info != NULL)
     {
-      callback (info, user_data, NULL);
-      g_mount_info_unref (info);
+      data->info = info;
+      g_idle_add (async_get_mount_info_cache_hit, data);
       return;
     }
 
@@ -923,9 +938,6 @@ _g_daemon_vfs_get_mount_info_async (GMountSpec *spec,
   dbus_message_iter_init_append (message, &iter);
   g_mount_spec_to_dbus_with_path (&iter, spec, path);
 
-  data = g_new0 (GetMountInfoData, 1);
-  data->callback = callback;
-  data->user_data = user_data;
   
   _g_dbus_connection_call_async (the_vfs->async_bus, message, G_VFS_DBUS_TIMEOUT_MSECS,
 				 async_get_mount_info_response,