1 files changed, 66 insertions, 0 deletions
diff --git a/tools/lldb-perf/lib/Timer.h b/tools/lldb-perf/lib/Timer.h
new file mode 100644
index 000000000000..ff179355cd43
--- /dev/null
+++ b/tools/lldb-perf/lib/Timer.h
@@ -0,0 +1,66 @@
+//===-- Timer.h -------------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __PerfTestDriver__Timer__
+#define __PerfTestDriver__Timer__
+
+#include "Gauge.h"
+
+#include <chrono>
+
+using namespace std::chrono;
+
+namespace lldb_perf
+{
+class TimeGauge : public Gauge<double>
+{
+public:
+    TimeGauge ();
+    
+    virtual
+    ~TimeGauge ()
+    {
+    }
+    
+    void
+    Start ();
+    
+    double
+    Stop ();
+    
+    virtual double
+    GetStartValue () const;
+    
+    virtual double
+    GetStopValue () const;
+
+    virtual double
+    GetDeltaValue () const;
+
+private:
+    enum class State
+    {
+        eNeverUsed,
+        eCounting,
+        eStopped
+    };
+    
+    typedef high_resolution_clock::time_point TimeType;
+    TimeType m_start;
+    TimeType m_stop;
+    double m_delta;
+    State m_state;
+    
+    TimeType
+    Now ();
+    
+};
+}
+
+#endif /* defined(__PerfTestDriver__Timer__) */