64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*
|
|
* Author: NoMachine <developers@nomachine.com>
|
|
*
|
|
* Copyright (c) 2009, 2010 NoMachine
|
|
* All rights reserved
|
|
*
|
|
* Support functions and system calls' replacements needed to let the
|
|
* software run on Win32 based operating systems.
|
|
*
|
|
* 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 THE AUTHOR ``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 AUTHOR 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 "includes.h"
|
|
|
|
#include <windows.h>
|
|
|
|
/* Difference in us between UNIX Epoch and Win32 Epoch */
|
|
#define EPOCH_DELTA_US 11644473600000000ULL
|
|
|
|
int
|
|
gettimeofday (struct timeval *tv, void *tz)
|
|
{
|
|
union
|
|
{
|
|
FILETIME ft;
|
|
unsigned long long ns;
|
|
} timehelper;
|
|
unsigned long long us;
|
|
|
|
/* Fetch time since Jan 1, 1601 in 100ns increments */
|
|
GetSystemTimeAsFileTime(&timehelper.ft);
|
|
|
|
/* Convert to microseconds from 100 ns units */
|
|
us = timehelper.ns / 10;
|
|
|
|
/* Remove the epoch difference */
|
|
us -= EPOCH_DELTA_US;
|
|
|
|
/* Stuff result into the timeval */
|
|
tv->tv_sec = (long) (us / 1000000ULL);
|
|
tv->tv_usec = (long) (us % 1000000ULL);
|
|
|
|
return 0;
|
|
}
|