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/* $Id: kHlpBareThread.c 29 2009-07-01 20:30:29Z bird $ */
/** @file
* kHlpBare - Thread Manipulation.
*/
/*
* Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <k/kHlpThread.h>
#if K_OS == K_OS_DARWIN
# include <mach/mach_time.h>
#elif K_OS == K_OS_LINUX
# include <k/kHlpSys.h>
#elif K_OS == K_OS_OS2
# define INCL_BASE
# define INCL_ERRORS
# include <os2.h>
#elif K_OS == K_OS_WINDOWS
# include <Windows.h>
#else
# error "port me"
#endif
/**
* Sleep for a number of milliseconds.
* @param cMillies Number of milliseconds to sleep.
*/
void kHlpSleep(unsigned cMillies)
{
#if K_OS == K_OS_DARWIN
static struct mach_timebase_info s_Info;
static KBOOL s_fNanoseconds = K_UNKNOWN;
KU64 uNow = mach_absolute_time();
KU64 uDeadline;
KU64 uPeriod;
if (s_fNanoseconds == K_UNKNOWN)
{
if (mach_timebase_info(&s_Info))
s_fNanoseconds = K_TRUE; /* the easy way out */
else if (s_Info.denom == s_Info.numer)
s_fNanoseconds = K_TRUE;
else
s_fNanoseconds = K_FALSE;
}
uPeriod = (KU64)cMillies * 1000 * 1000;
if (!s_fNanoseconds)
uPeriod = (double)uPeriod * s_Info.denom / s_Info.numer; /* Use double to avoid 32-bit trouble. */
uDeadline = uNow + uPeriod;
mach_wait_until(uDeadline);
#elif K_OS == K_OS_LINUX
/** @todo find the right syscall... */
#elif K_OS == K_OS_OS2
DosSleep(cMillies);
#elif K_OS == K_OS_WINDOWS
Sleep(cMillies);
#else
usleep(cMillies * 1000);
#endif
}
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