////////////////////////////////////////////////////////////////////////////////

// Copyright 2017 Intel Corporation

//

// Licensed under the Apache License, Version 2.0 (the "License"); you may not

// use this file except in compliance with the License. You may obtain a copy

// of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

// License for the specific language governing permissions and limitations

// under the License.

////////////////////////////////////////////////////////////////////////////////

#include "WindowsHelpers.hpp"

#include <comdef.h>

#include <cstring>

#if USING_WSI

#include "wsi.hpp"

#endif

bool hresult_succeeded(HRESULT hresult, const char *message, const char *file, int line)

{

if (!SUCCEEDED(hresult)) {

_com_error err(hresult, nullptr);

char buf[1024];

#ifdef UNICODE

sprintf_s(buf, "%s\n\tHRESULT Failure %08x: %ws", message, hresult, err.ErrorMessage());

#else

sprintf_s(buf, "%s\n\tHRESULT Failure %08x: %s", message, hresult, err.ErrorMessage());

#endif

OutputDebugStringA(buf);

return false;

}

return true;

}

static UINT64 GetQpcFreq()

{

UINT64 QpcFreq;

QueryPerformanceFrequency((LARGE_INTEGER*)&QpcFreq);

return QpcFreq;

}

UINT64 g_QpcFreq = GetQpcFreq();

UINT64 SecondsToQpcTime(double Seconds)

{

return (UINT64)(g_QpcFreq*Seconds);

}

double QpcTimeToSeconds(UINT64 QpcTime)

{

return (double)QpcTime / g_QpcFreq;

}

UINT64 QpcNow()

{

UINT64 Now;

QueryPerformanceCounter((LARGE_INTEGER*)&Now);

return Now;

}

void SleepUntil(UINT64 QpcTime)

{

UINT64 Now = QpcNow();

if (QpcTime > Now) {

UINT64 Duration = QpcTime - Now;

UINT Millis = UINT(1000 * Duration / g_QpcFreq);

if (Millis > 0) {

Sleep(Millis);

}

}

}