newlib-cygwin/winsup/mingw/mingwex/usleep.c

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/*
* usleep
* Implementation according to:
* The Open Group Base Specifications Issue 6
* IEEE Std 1003.1, 2004 Edition
*/
/*
* THIS SOFTWARE IS NOT COPYRIGHTED
*
* This source code is offered for use in the public domain. You may
* use, modify or distribute it freely.
*
* This code is distributed in the hope that it will be useful but
* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
* DISCLAIMED. This includes but is not limited to warranties of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Contributed by:
* Ramiro Polla <ramiro@lisha.ufsc.br>
*/
#include <sys/types.h>
#include <errno.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
int __cdecl usleep(useconds_t useconds)
{
if(useconds == 0)
return 0;
if(useconds >= 1000000)
return EINVAL;
Sleep((useconds + 999) / 1000);
return 0;
}