gettickcount.c

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 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 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (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.  
 *  
 * 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