From 2bf438fe7b1e242f6188732b9dd93f9a2ac9bc83 Mon Sep 17 00:00:00 2001
From: Cedric Boudinet <boudinpg@gmail.com>
Date: Fri, 25 Dec 2020 21:24:27 +0100
Subject: [PATCH] Changing svReceiverLoop to reduce latency

---
 src/sampled_values/sv_subscriber.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/sampled_values/sv_subscriber.c b/src/sampled_values/sv_subscriber.c
index fb1cae6c..24c890b0 100644
--- a/src/sampled_values/sv_subscriber.c
+++ b/src/sampled_values/sv_subscriber.c
@@ -156,13 +156,24 @@ static void
 svReceiverLoop(void* threadParameter)
 {
     SVReceiver self = (SVReceiver) threadParameter;
+    EthernetHandleSet handleSet = EthernetHandleSet_new();
+    EthernetHandleSet_addSocket(handleSet, self->ethSocket);
 
     self->stopped = false;
 
     while (self->running) {
+            switch (EthernetHandleSet_waitReady(handleSet, 100))
+            {
+            case -1:
+                if (DEBUG_GOOSE_SUBSCRIBER)
+                    printf("SV_SUBSCRIBER: EhtnernetHandleSet_waitReady() failure\n");
+                break;
+            case 0:
+                break;
+            default:
+                SVReceiver_tick(self);
+            }
 
-        if (SVReceiver_tick(self) == false)
-            Thread_sleep(1);
     }
 
     self->stopped = true;