[tracker-miners/wip/carlosg/shuffle-libtracker-miner: 5/116] libtracker-miner: Set up cancellable for TrackerDecorator internal ops

[Carlos Garnacho <carlosg src gnome org>]

commit a8261deef44c29774e0087bb68242a44884f8ca8
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Aug 31 19:24:23 2017 +0200

    libtracker-miner: Set up cancellable for TrackerDecorator internal ops
    
    Those must be cancelled if the TrackerDecorator gets destroyed.

 src/libtracker-miner/tracker-decorator.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)
---
diff --git a/src/libtracker-miner/tracker-decorator.c b/src/libtracker-miner/tracker-decorator.c
index 9cc3e392d..778f75174 100644
--- a/src/libtracker-miner/tracker-decorator.c
+++ b/src/libtracker-miner/tracker-decorator.c
@@ -90,6 +90,8 @@ struct _TrackerDecoratorPrivate {
        GTimer *timer;
        GQueue next_elem_queue; /* Queue of incoming tasks */
 
+       GCancellable *cancellable;
+
        gint batch_size;
 
        guint processing : 1;
@@ -429,7 +431,7 @@ decorator_commit_info (TrackerDecorator *decorator)
                                                      (gchar **) array->pdata,
                                                      array->len,
                                                      G_PRIORITY_DEFAULT,
-                                                     NULL,
+                                                     priv->cancellable,
                                                      decorator_commit_cb,
                                                      decorator);
 
@@ -816,13 +818,16 @@ decorator_query_remaining_items (TrackerDecorator *decorator)
 {
        gchar *query, *clauses[] = { "COUNT(?urn)", NULL };
        TrackerSparqlConnection *sparql_conn;
+       TrackerDecoratorPrivate *priv;
 
+       priv = decorator->priv;
        query = create_query_string (decorator, clauses, FALSE);
 
        if (query) {
                sparql_conn = tracker_miner_get_connection (TRACKER_MINER (decorator));
                tracker_sparql_connection_query_async (sparql_conn, query,
-                                                      NULL, decorator_query_remaining_items_cb,
+                                                      priv->cancellable,
+                                                      decorator_query_remaining_items_cb,
                                                       decorator);
                g_free (query);
        } else {
@@ -931,7 +936,8 @@ decorator_cache_next_items (TrackerDecorator *decorator)
                sparql_conn = tracker_miner_get_connection (TRACKER_MINER (decorator));
                query = create_remaining_items_query (decorator);
                tracker_sparql_connection_query_async (sparql_conn, query,
-                                                      NULL, decorator_cache_items_cb,
+                                                      priv->cancellable,
+                                                      decorator_cache_items_cb,
                                                       decorator);
                g_free (query);
        }
@@ -1134,6 +1140,9 @@ tracker_decorator_finalize (GObject *object)
        decorator = TRACKER_DECORATOR (object);
        priv = decorator->priv;
 
+       g_cancellable_cancel (priv->cancellable);
+       g_clear_object (&priv->cancellable);
+
        g_clear_object (&priv->notifier);
 
        g_queue_foreach (&priv->item_cache,
@@ -1302,6 +1311,7 @@ tracker_decorator_init (TrackerDecorator *decorator)
        priv->prepended_ids = g_array_new (FALSE, FALSE, sizeof (gint));
        priv->batch_size = DEFAULT_BATCH_SIZE;
        priv->timer = g_timer_new ();
+       priv->cancellable = g_cancellable_new ();
 
        g_queue_init (&priv->next_elem_queue);
        g_queue_init (&priv->item_cache);