core: added new event SREV_CORE_STATS

- to be used by Kamailio core statistics not included in stock SR core

events.c

@@ -48,6 +48,11 @@ int sr_event_register_cb(int type, sr_event_cb_f f)
 					_sr_events_list.net_data_out = f;
 				else return -1;
 			break;
+		case SREV_CORE_STATS:
+				if(_sr_events_list.core_stats==0)
+					_sr_events_list.core_stats = f;
+				else return -1;
+			break;
 		default:
 			return -1;
 	}
@@ -91,6 +96,13 @@ int sr_event_exec(int type, void *data)
 					return ret;
 				} else return 1;
 			break;
+		case SREV_CORE_STATS:
+				if(unlikely(_sr_events_list.core_stats!=0))
+				{
+					ret = _sr_events_list.core_stats(data);
+					return ret;
+				} else return 1;
+			break;
 		default:
 			return -1;
 	}

events.h

@@ -25,12 +25,14 @@
 
 #define SREV_NET_DATA_IN	1
 #define SREV_NET_DATA_OUT	2
+#define SREV_CORE_STATS		3
 
 typedef int (*sr_event_cb_f)(void *data);
 
 typedef struct sr_event_cb {
 	sr_event_cb_f net_data_in;
 	sr_event_cb_f net_data_out;
+	sr_event_cb_f core_stats;
 } sr_event_cb_t;
 
 void sr_event_cb_init(void);