| /**************************************************************************** |
| * |
| * 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> |
| |
| /*---------------------------- Global Variables ---------------------------*/ |
| |
| 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 the |
| Nucleus 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; |
| } |
| } |
