Move BenchTimer to tools as Timer

bench/BenchSysTimer_windows.cpp

-
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#include "BenchSysTimer_windows.h"
-
-//Time
-#define WIN32_LEAN_AND_MEAN 1
-#include <windows.h>
-
-static ULONGLONG winCpuTime() {
-    FILETIME createTime;
-    FILETIME exitTime;
-    FILETIME usrTime;
-    FILETIME sysTime;
-    if (0 == GetProcessTimes(GetCurrentProcess()
-                           , &createTime, &exitTime
-                           , &sysTime, &usrTime))
-    {
-        return 0;
-    }
-    ULARGE_INTEGER start_cpu_sys;
-    ULARGE_INTEGER start_cpu_usr;
-    start_cpu_sys.LowPart  = sysTime.dwLowDateTime;
-    start_cpu_sys.HighPart = sysTime.dwHighDateTime;
-    start_cpu_usr.LowPart  = usrTime.dwLowDateTime;
-    start_cpu_usr.HighPart = usrTime.dwHighDateTime;
-    return start_cpu_sys.QuadPart + start_cpu_usr.QuadPart;
-}
-
-void BenchSysTimer::startWall() {
-    if (0 == ::QueryPerformanceCounter(&this->fStartWall)) {
-        this->fStartWall.QuadPart = 0;
-    }
-}
-void BenchSysTimer::startCpu() {
-    this->fStartCpu = winCpuTime();
-}
-
-double BenchSysTimer::endCpu() {
-    ULONGLONG end_cpu = winCpuTime();
-    return static_cast<double>((end_cpu - this->fStartCpu)) / 10000.0L;
-}
-double BenchSysTimer::endWall() {
-    LARGE_INTEGER end_wall;
-    if (0 == ::QueryPerformanceCounter(&end_wall)) {
-        end_wall.QuadPart = 0;
-    }
-
-    LARGE_INTEGER ticks_elapsed;
-    ticks_elapsed.QuadPart = end_wall.QuadPart - this->fStartWall.QuadPart;
-
-    LARGE_INTEGER frequency;
-    if (0 == ::QueryPerformanceFrequency(&frequency)) {
-        return 0.0L;
-    } else {
-        return static_cast<double>(ticks_elapsed.QuadPart)
-             / static_cast<double>(frequency.QuadPart)
-             * 1000.0L;
-    }
-}