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+/***********************************************************************
+** Copyright (C) 2019 LP-Research
+** All rights reserved.
+** Contact: LP-Research (info@lp-research.com)
+**
+** This file is part of the Open Motion Analysis Toolkit (OpenMAT).
+**
+** Redistribution and use in source and binary forms, with 
+** or without modification, are permitted provided that the 
+** following conditions are met:
+**
+** Redistributions of source code must retain the above copyright 
+** notice, this list of conditions and the following disclaimer.
+** Redistributions in binary form must reproduce the above copyright 
+** notice, this list of conditions and the following disclaimer in 
+** the documentation and/or other materials provided with the 
+** distribution.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
+** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+** HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#include "MicroMeasure.h"
+
+#include <sys/time.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <assert.h>
+
+static const unsigned usec_per_sec = 1000000;
+static const unsigned usec_per_msec = 1000;
+
+bool QueryPerformanceFrequency(long long *frequency)
+{
+    *frequency = (long long)usec_per_sec;
+
+    return true;
+}
+
+bool QueryPerformanceCounter(long long *performance_count)
+{
+    struct timeval time;
+
+    assert(performance_count != NULL);
+
+    gettimeofday(&time, NULL);
+    *performance_count = time.tv_usec + time.tv_sec * (long long)usec_per_sec;
+
+    return true;
+}
+
+MicroMeasure::MicroMeasure()
+{
+    long long ticksPerSecond;
+
+    QueryPerformanceFrequency(&ticksPerSecond);
+    tpm = ticksPerSecond;
+    start_time = 0LL;
+}
+
+void MicroMeasure::reset(void)
+{
+    long long tick;
+
+    QueryPerformanceCounter(&tick);
+    start_time = tick;
+}
+
+long long MicroMeasure::measure(void)
+{
+    long long tick;
+
+    QueryPerformanceCounter(&tick);
+
+    return (((tick - start_time) * 1000LL * 1000LL) / tpm);
+}
+
+void MicroMeasure::sleep(long long s_t)
+{
+    reset();
+
+    while (measure() < s_t)
+    {
+    }
+}