From b864bd066393e7a46f42eeffce3e7d3692e7c140 Mon Sep 17 00:00:00 2001
From: Jeff Hatch <Jeff.Hatch@multitech.com>
Date: Thu, 1 Feb 2018 07:57:36 -0600
Subject: Add monoTimeMicros() function

---
 include/mts/MTS_System.h |  4 ++++
 src/MTS_System.cpp       | 15 +++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/include/mts/MTS_System.h b/include/mts/MTS_System.h
index a16265c..bd5fa53 100644
--- a/include/mts/MTS_System.h
+++ b/include/mts/MTS_System.h
@@ -44,6 +44,10 @@ namespace MTS {
             static uint64_t timeMicros();
             static uint64_t precisionTimeMicros();
 
+            //MONOTONIC : number of seconds elapsed since some unspecified starting point. When time is changed by user, timer are unaffected.
+
+            static uint64_t monoTimeMicros();
+
             static bool isBigEndian();
             static void swapBytes(uint8_t* const pBuffer, const uint32_t iSize);
 
diff --git a/src/MTS_System.cpp b/src/MTS_System.cpp
index e1ed348..abed817 100644
--- a/src/MTS_System.cpp
+++ b/src/MTS_System.cpp
@@ -95,6 +95,21 @@ uint64_t System::precisionTimeMicros() {
     return micros;
 }
 
+uint64_t System::monoTimeMicros() {
+    uint64_t micros = 0;
+#ifdef WIN32
+    micros = static_cast<uint64_t>(GetTickCount64()) * 1000;
+#else
+    timespec ts;
+    int result = clock_gettime(CLOCK_MONOTONIC, &ts);
+    if (result == 0) {
+        micros = (static_cast<uint64_t>(ts.tv_sec) * 1000000)
+            + (ts.tv_nsec / 1000);
+    }
+#endif
+    return micros;
+}
+
 bool System::isBigEndian() {
     static union {
             uint32_t i;
-- 
cgit v1.2.3