CPU util. measurements fix (more accurate and steady)

see #trex-246

1 files changed, 12 insertions, 1 deletions

diff --git a/src/os_time.h b/src/os_time.h
index b1d44c03..4f10e2b5 100755
--- a/src/os_time.h
+++ b/src/os_time.h
@@ -165,6 +165,17 @@ void delay(int msec){
     nanosleep(&time1,&remain);
 }
 
-
+/**
+ * more accurate sleep by doing spin
+ * 
+ */
+static inline
+void delay_spin(double sec) {
+    double target = now_sec() + sec;
+
+    while (now_sec() < target) {
+        rte_pause();
+    }
+}
 
 #endif