gettickcount.c

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: gettickcount.c,v 1.3.32.3 2004/07/09 01:43:30 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
 * 
 * The contents of this file, and the files included with this file,
 * are subject to the current version of the RealNetworks Public
 * Source License (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
 * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
 * will apply. You may also obtain the license terms directly from
 * RealNetworks.  You may not use this file except in compliance with
 * the RPSL or, if you have a valid RCSL with RealNetworks applicable
 * to this file, the RCSL.  Please see the applicable RPSL or RCSL for
 * the rights, obligations and limitations governing use of the
 * contents of the file.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
 * this file only under the terms of the GPL, and not to allow others
 * to use your version of this file under the terms of either the RPSL
 * or RCSL, indicate your decision by deleting the provisions above
 * and replace them with the notice and other provisions required by
 * the GPL. If you do not delete the provisions above, a recipient may
 * use your version of this file under the terms of any one of the
 * RPSL, the RCSL or the GPL.
 * 
 * This file is part of the Helix DNA Technology. RealNetworks is the
 * developer of the Original Code and owns the copyrights in the
 * portions it created.
 * 
 * This file, and the files included with this file, is distributed
 * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
 * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
 * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
 * ENJOYMENT OR NON-INFRINGEMENT.
 * 
 * Technology Compatibility Kit Test Suite(s) Location:
 *    http://www.helixcommunity.org/content/tck
 * 
 * Contributor(s):
 * 
 * ***** END LICENSE BLOCK ***** */

#ifndef _VXWORKS
#include <sys/time.h>
#endif
#include <unistd.h>
#include "hxtypes.h"
#include "hxheap.h"
#include "hxtick.h"

#include <stdio.h>

#ifdef _VXWORKS
void g_RegisterGlobalPtr(void *ptr);
#include <kernel/cClock.h>
#endif

#ifndef _VXWORKS
ULONG32
GetTickCount()
{
    struct timeval tv;
    gettimeofday( &tv, NULL );
    // this will rollover ~ every 49.7 days
    return (ULONG32)(tv.tv_sec * 1000 + tv.tv_usec / 1000);
}
#else

static Clock *_clock = NULL;

ULONG32 GetTickCount()
{
    TickSpec ticks;
    TimeSpec time;
    if (_clock == NULL)
    {
        _clock = ClockCreate(SYSTEM_CLOCK);
        if (_clock == NULL)
        {
            return 0;
        }
        g_RegisterGlobalPtr(&_clock);
    }
    ClockGetTime(_clock, &ticks);
    ClockConvertToTime(_clock, &ticks, &time);
    return (time.tv_sec * 1000) + (time.tv_nsec / 1000000);
}
#endif