[tracker/async-queries-due] TrackerStore: Keep a list of running tasks.

[Carlos Garnacho <carlosg src gnome org>]

commit 3343226830776e74b8f15d5ee52f49e5f61f8393
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Apr 16 14:09:34 2010 +0200

    TrackerStore: Keep a list of running tasks.
    
    These are removed from the queue as soon as they start processing, so keep them
    elsewhere in order to have cancellation work.

 src/tracker-store/tracker-store.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/tracker-store/tracker-store.c b/src/tracker-store/tracker-store.c
index dd1b9d0..0fa7bac 100644
--- a/src/tracker-store/tracker-store.c
+++ b/src/tracker-store/tracker-store.c
@@ -47,6 +47,7 @@ typedef struct {
 	gboolean     update_running;
 	GThreadPool *main_pool;
 	GThreadPool *global_pool;
+	GSList	    *running_tasks;
 } TrackerStorePrivate;
 
 typedef enum {
@@ -279,6 +280,7 @@ task_finish_cb (gpointer data)
 			g_clear_error (&task->error);
 		}
 
+		private->running_tasks = g_slist_remove (private->running_tasks, task);
 		private->n_queries_running--;
 	} else if (task->type == TRACKER_STORE_TASK_TYPE_UPDATE) {
 		if (!task->data.update.batch && !task->error) {
@@ -435,6 +437,7 @@ queue_idle_handler (gpointer user_data)
 		/* pop task now, otherwise further queries won't be scheduled */
 		g_queue_pop_head (queue);
 
+		private->running_tasks = g_slist_prepend (private->running_tasks, task);
 		private->n_queries_running++;
 
 		task_run_async (private, task);