/******************************************************************************                   SciTech Nucleus Graphics Architecture**               Copyright (C) 1991-1998 SciTech Software, Inc.*                            All rights reserved.**  ======================================================================*  |REMOVAL OR MODIFICATION OF THIS HEADER IS STRICTLY PROHIBITED BY LAW|*  |                                                                    |*  |This copyrighted computer code contains proprietary technology      |*  |owned by SciTech Software, Inc., located at 505 Wall Street,        |*  |Chico, CA 95928 USA (http://www.scitechsoft.com).                   |*  |                                                                    |*  |The contents of this file are subject to the SciTech Nucleus        |*  |License; you may *not* use this file or related software except in  |*  |compliance with the License. You may obtain a copy of the License   |*  |at http://www.scitechsoft.com/nucleus-license.txt                   |*  |                                                                    |*  |Software distributed under the License is distributed on an         |*  |"AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or      |*  |implied. See the License for the specific language governing        |*  |rights and limitations under the License.                           |*  |                                                                    |*  |REMOVAL OR MODIFICATION OF THIS HEADER IS STRICTLY PROHIBITED BY LAW|*  ======================================================================** Language:     ANSI C* Environment:  Linux** Description:  OS specific Nucleus Graphics Architecture services for*               the Linux operating system.*****************************************************************************/#include "nucleus/graphics.h"#include <sys/time.h>static ibool            haveRDTSC;/*-------------------------- Implementation -------------------------------*//****************************************************************************REMARKS:Nothing special for this OS.****************************************************************************/GA_sharedInfo * NAPI GA_getSharedInfo(    int device){    (void)device;    return NULL;}/****************************************************************************REMARKS:Nothing special for this OS.****************************************************************************/ibool NAPI GA_getSharedExports(    GA_exports *gaExp){    (void)gaExp;    return false;}/****************************************************************************REMARKS:This function initialises the high precision timing functions for theNucleus loader library.****************************************************************************/ibool NAPI GA_TimerInit(void){    if (_GA_haveCPUID() && (_GA_getCPUIDFeatures() & CPU_HaveRDTSC) != 0)	haveRDTSC = true;    return true;}/****************************************************************************REMARKS:This function reads the high resolution timer.****************************************************************************/void NAPI GA_TimerRead(    GA_largeInteger *value){    if (haveRDTSC)	_GA_readTimeStamp(value);    else {	struct timeval t;	gettimeofday(&t, NULL);	value->low = t.tv_sec*1000000 + t.tv_usec;	value->high = 0;	}}