some additions to the stateless simulation mode

2 files changed, 9 insertions, 4 deletions

diff --git a/src/stateless/dp/trex_stateless_dp_core.cpp b/src/stateless/dp/trex_stateless_dp_core.cpp
index c211b9f5..0a9a88ab 100644
--- a/src/stateless/dp/trex_stateless_dp_core.cpp
+++ b/src/stateless/dp/trex_stateless_dp_core.cpp
@@ -353,8 +353,11 @@ void
 TrexStatelessDpCore::idle_state_loop() {
 
     while (m_state == STATE_IDLE) {
-        periodic_check_for_cp_messages();
-        delay(200);
+        bool had_msg = periodic_check_for_cp_messages();
+        /* if no message - backoff for some time */
+        if (!had_msg) {
+            delay(200);
+        }
     }
 }
 
diff --git a/src/stateless/dp/trex_stateless_dp_core.h b/src/stateless/dp/trex_stateless_dp_core.h
index 7dc4a2b2..efdb364c 100644
--- a/src/stateless/dp/trex_stateless_dp_core.h
+++ b/src/stateless/dp/trex_stateless_dp_core.h
@@ -185,12 +185,12 @@ public:
      * 
      * @author imarom (27-Oct-15)
      */
-    void periodic_check_for_cp_messages() {
+    bool periodic_check_for_cp_messages() {
         // doing this inline for performance reasons
 
         /* fast path */
         if ( likely ( m_ring_from_cp->isEmpty() ) ) {
-            return;
+            return false;
         }
 
         while ( true ) {
@@ -204,6 +204,8 @@ public:
             handle_cp_msg(msg);
         }
 
+        return true;
+
     }
 
     /* quit the main loop, work in both stateless in stateful, don't free memory trigger from  master  */