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/*
* Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 "config.h"
#include "SystemTime.h"
#include "NotImplemented.h"
#include <windows.h>
namespace WebCore {
double currentTime()
{
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
// As per Windows documentation for FILETIME, copy the resulting FILETIME structure to a
// ULARGE_INTEGER structure using memcpy (using memcpy instead of direct assignment can
// prevent alignment faults on 64-bit Windows).
ULARGE_INTEGER t;
memcpy(&t, &ft, sizeof(t));
// Windows file times are in 100s of nanoseconds.
// To convert to seconds, we have to divide by 10,000,000, which is more quickly
// done by multiplying by 0.0000001.
// Between January 1, 1601 and January 1, 1970, there were 369 complete years,
// of which 89 were leap years (1700, 1800, and 1900 were not leap years).
// That is a total of 134774 days, which is 11644473600 seconds.
return t.QuadPart * 0.0000001 - 11644473600.0;
}
float userIdleTime()
{
// Needed for back/forward cache.
notImplemented();
return 0.0F;
}
}
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