[glib] GTask: Avoid resorting

[Matthias Clasen <matthiasc src gnome org>]

commit e419e1c4e212b1195c8e531fd6eeb4a0b80108d3
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jun 18 10:36:23 2015 -0400

    GTask: Avoid resorting
    
    When a task is cancelled, we want to move it to the front
    of the queue - our sort function does that for us, but there
    is no need to resort the entire queue here, we can just
    move the one item and be done with it. This uses just-introduced
    threadpool api for this purpose.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=751160

 gio/gtask.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/gio/gtask.c b/gio/gtask.c
index 2bf82a2..c2569dc 100644
--- a/gio/gtask.c
+++ b/gio/gtask.c
@@ -1296,7 +1296,10 @@ task_thread_cancelled (GCancellable *cancellable,
 {
   GTask *task = user_data;
 
-  g_task_thread_pool_resort ();
+  /* Move this task to the front of the queue - no need for
+   * a complete resorting of the queue.
+   */
+  g_thread_pool_move_to_front (task_pool, task);
 
   g_mutex_lock (&task->lock);
   task->thread_cancelled = TRUE;