1 files changed, 63 insertions, 0 deletions
diff --git a/src/armnn/WallClockTimer.hpp b/src/armnn/WallClockTimer.hpp
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+++ b/src/armnn/WallClockTimer.hpp
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+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// See LICENSE file in the project root for full license information.
+//
+
+#pragma once
+
+#include "Instrument.hpp"
+#include <chrono>
+
+namespace armnn
+{
+
+// Clock class that uses the same timestamp function as the Mali DDK.
+class monotonic_clock_raw {
+public:
+    using duration = std::chrono::nanoseconds;
+    using time_point = std::chrono::time_point<monotonic_clock_raw, duration>;
+
+    static std::chrono::time_point<monotonic_clock_raw, std::chrono::nanoseconds> now() noexcept
+    {
+        timespec ts;
+        clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
+        return time_point(std::chrono::nanoseconds(ts.tv_sec*1000000000 + ts.tv_nsec));
+    }
+};
+
+// Implementation of an instrument to measure elapsed wall-clock time in milliseconds.
+class WallClockTimer : public Instrument
+{
+public:
+    // Construct a Wall Clock Timer
+    WallClockTimer() = default;
+    ~WallClockTimer() = default;
+
+    // Start the Wall clock timer
+    void Start() override;
+
+    // Stop the Wall clock timer
+    void Stop() override;
+
+    // Get the name of the timer
+    const char* GetName() const override;
+
+    // Get the recorded measurements
+    std::vector<Measurement> GetMeasurements() const override;
+
+#if defined(CLOCK_MONOTONIC_RAW)
+    using clock = monotonic_clock_raw;
+#else
+    using clock = std::chrono::steady_clock;
+#endif
+
+    static const std::string WALL_CLOCK_TIME;
+    static const std::string WALL_CLOCK_TIME_START;
+    static const std::string WALL_CLOCK_TIME_STOP;
+
+private:
+    clock::time_point m_Start;
+    clock::time_point m_Stop;
+};
+
+} //namespace armnn