add log to debug edge can't pull stream from origin sometimes

@@ -510,9 +510,9 @@ int SrsRtmpConn::stream_service_cycle()
 
     bool vhost_is_edge = _srs_config->get_vhost_is_edge(req->vhost);
     bool enabled_cache = _srs_config->get_gop_cache(req->vhost);
-    srs_trace("source url=%s, ip=%s, cache=%d, is_edge=%d, source_id=%d[%d]",
+    srs_trace("source url=%s, ip=%s, cache=%d, is_edge=%d, source_id=%d[%d], pointer=%"SCNxPTR,
         req->get_stream_url().c_str(), ip.c_str(), enabled_cache, vhost_is_edge, 
-        source->source_id(), source->source_id());
+        source->source_id(), source->source_id(),source);
     source->set_cache(enabled_cache);
     
     client_type = type;

@@ -765,7 +765,7 @@ int SrsSource::fetch_or_create(SrsRequest* r, ISrsSourceHandler* h, SrsSource**
     }
         
     pool[stream_url] = source;
-    srs_info("create new source for url=%s, vhost=%s", stream_url.c_str(), vhost.c_str());
+    srs_trace("create new source for url=%s, vhost=%s pointer=%"SCNxPTR, stream_url.c_str(), vhost.c_str(), source);
     
     *pps = source;