chromium/third_party/qcms/src/tests/timing.h

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef TESTS_TIMING_H
#define TESTS_TIMING_H

#include <assert.h>
#if defined(_WIN32)
#include <windows.h>
#else
#include <sys/time.h>
#endif
#include <time.h>

#if defined(_WIN32)

static double seconds()
{
    static double clock_frequency;
    static bool have_frequency;

    LARGE_INTEGER qpc;
    QueryPerformanceCounter(&qpc);
    if (have_frequency)
        return qpc.QuadPart * clock_frequency;

    have_frequency = true;
    QueryPerformanceFrequency(&qpc);
    clock_frequency = 1.0 / (double) qpc.QuadPart;
    return seconds();
}

#else

static double seconds()
{ … }

#endif

#define TIME(function, time) …

#endif // TESTS_TIMING_H