Add a callback to be invoked when the queue starts a torrent.

libtransmission/peer-mgr.c

@@ -3572,8 +3572,11 @@ queuePulse( tr_session * session, tr_direction dir )
         const int n = tr_sessionCountQueueFreeSlots( session, dir );
         for( i=0; i<n; i++ ) {
             tr_torrent * tor = tr_sessionGetNextQueuedTorrent( session, dir );
-            if( tor != NULL )
+            if( tor != NULL ) {
                 tr_torrentStartNow( tor );
+                if( tor->queue_started_callback != NULL )
+                    (*tor->queue_started_callback)( tor );
+            }
         }
     }
 }

libtransmission/torrent.c

@@ -3321,3 +3321,11 @@ torrentSetQueued( tr_torrent * tor, bool queued )
         tor->anyDate = tr_time( );
     }
 }
+
+void
+tr_torrentSetQueueStartCallback( tr_torrent * torrent, void (*callback)( tr_torrent * ) )
+{
+    torrent->queue_started_callback = callback;
+}
+
+

libtransmission/torrent.h

@@ -236,6 +236,8 @@ struct tr_torrent
     tr_torrent_idle_limit_hit_func  * idle_limit_hit_func;
     void                            * idle_limit_hit_func_user_data;
 
+    void ( * queue_started_callback )( tr_torrent * );
+
     bool                       isRunning;
     bool                       isStopping;
     bool                       isDeleting;

libtransmission/transmission.h

@@ -808,6 +808,9 @@ void tr_sessionSetQueueStalledMinutes( tr_session *, int minutes );
 /** @return the number of minutes a torrent can be idle before being considered as stalled */
 int  tr_sessionGetQueueStalledMinutes( const tr_session * );
 
+/** @brief Set a callback that is invoked when the queue starts a torrent */
+void tr_torrentSetQueueStartCallback( tr_torrent * torrent, void (*callback)( tr_torrent * ) );
+
 
 /***
 ****