[gnome-photos/wip/rishi/misc-fixes: 1/2] base-item, item-manager: Stop thumbnailing jobs during shutdown

[Debarshi Ray <debarshir src gnome org>]

commit bf1ed7993031af592518448d8df9703a904f9c87
Author: Debarshi Ray <debarshir gnome org>
Date:   Tue Dec 15 12:22:30 2015 +0100

    base-item, item-manager: Stop thumbnailing jobs during shutdown

 src/photos-base-item.c    |   11 +++++++++++
 src/photos-base-item.h    |    2 ++
 src/photos-item-manager.c |    2 ++
 3 files changed, 15 insertions(+), 0 deletions(-)
---
diff --git a/src/photos-base-item.c b/src/photos-base-item.c
index c838581..a3306f1 100644
--- a/src/photos-base-item.c
+++ b/src/photos-base-item.c
@@ -2848,6 +2848,17 @@ photos_base_item_set_favorite (PhotosBaseItem *self, gboolean favorite)
 
 
 void
+photos_base_item_thumbnailing_stop (void)
+{
+  if (create_thumbnail_pool == NULL)
+    return;
+
+  g_thread_pool_free (create_thumbnail_pool, TRUE, TRUE);
+  create_thumbnail_pool = NULL;
+}
+
+
+void
 photos_base_item_trash (PhotosBaseItem *self)
 {
   PhotosDeleteItemJob *job;
diff --git a/src/photos-base-item.h b/src/photos-base-item.h
index b2c454f..3b297f6 100644
--- a/src/photos-base-item.h
+++ b/src/photos-base-item.h
@@ -275,6 +275,8 @@ void                photos_base_item_set_default_app_name    (PhotosBaseItem *se
 
 void                photos_base_item_set_favorite            (PhotosBaseItem *self, gboolean favorite);
 
+void                photos_base_item_thumbnailing_stop       (void);
+
 void                photos_base_item_trash                   (PhotosBaseItem *self);
 
 G_END_DECLS
diff --git a/src/photos-item-manager.c b/src/photos-item-manager.c
index d943385..e160f11 100644
--- a/src/photos-item-manager.c
+++ b/src/photos-item-manager.c
@@ -424,6 +424,8 @@ photos_item_manager_dispose (GObject *object)
 {
   PhotosItemManager *self = PHOTOS_ITEM_MANAGER (object);
 
+  photos_base_item_thumbnailing_stop ();
+
   if (self->collection_path != NULL)
     {
       photos_item_manager_collection_path_free (self);