1 files changed, 56 insertions, 0 deletions
diff --git a/lldb/tools/lldb-perf/lib/Timer.h b/lldb/tools/lldb-perf/lib/Timer.h
new file mode 100644
index 00000000000..c877a3d3c9e
--- /dev/null
+++ b/lldb/tools/lldb-perf/lib/Timer.h
@@ -0,0 +1,56 @@
+//
+//  Timer.h
+//  PerfTestDriver
+//
+//  Created by Enrico Granata on 3/6/13.
+//  Copyright (c) 2013 Apple Inc. All rights reserved.
+//
+
+#ifndef __PerfTestDriver__Timer__
+#define __PerfTestDriver__Timer__
+
+#include "Gauge.h"
+
+#include <chrono>
+
+using namespace std::chrono;
+
+namespace lldb { namespace perf
+{
+class TimeGauge : public Gauge<double>
+{
+private:
+    enum class State
+    {
+        eTSNeverUsed,
+        eTSCounting,
+        eTSStopped
+    };
+    
+    typedef high_resolution_clock::time_point HPTime;
+    HPTime m_start;
+    double m_value;
+    State m_state;
+    
+    HPTime
+    now ();
+    
+public:
+    TimeGauge ();
+    
+    virtual
+    ~TimeGauge ()
+    {}
+    
+    void
+    start ();
+    
+    double
+    stop ();
+    
+    double
+    value ();
+};
+} }
+
+#endif /* defined(__PerfTestDriver__Timer__) */