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-/****************************************************************************
-*
-* 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 -------------------------------*/
-
-/****************************************************************************
-PARAMETERS:
-path - Local path to the Nucleus driver files.
-
-REMARKS:
-This function is used by the application program to override the location
-of the Nucleus driver files that are loaded. Normally the loader code
-will look in the system Nucleus directories first, then in the 'drivers'
-directory relative to the current working directory, and finally relative
-to the MGL_ROOT environment variable.
-****************************************************************************/
-void NAPI GA_setLocalPath(
- const char *path)
-{
- PM_setLocalBPDPath(path);
-}
-
-/****************************************************************************
-RETURNS:
-Pointer to the system wide PM library imports, or the internal version if none
-
-REMARKS:
-In order to support deploying new Nucleus drivers that may require updated
-PM library functions, we check here to see if there is a system wide version
-of the PM functions available. If so we return those functions for use with
-the system wide Nucleus drivers, otherwise the compiled in version of the PM
-library is used with the application local version of Nucleus.
-****************************************************************************/
-PM_imports * NAPI GA_getSystemPMImports(void)
-{
- /* TODO: We may very well want to provide a system shared library */
- /* that eports the PM functions required by the Nucleus library */
- /* for BeOS here. That will eliminate fatal errors loading new */
- /* drivers on BeOS! */
- return &_PM_imports;
-}
-
-/****************************************************************************
-REMARKS:
-Nothing special for this OS.
-****************************************************************************/
-ibool NAPI GA_getSharedExports(
- GA_exports *gaExp,
- ibool shared)
-{
- (void)gaExp;
- (void)shared;
- return false;
-}
-
-#ifndef TEST_HARNESS
-/****************************************************************************
-REMARKS:
-Nothing special for this OS
-****************************************************************************/
-ibool NAPI GA_queryFunctions(
- GA_devCtx *dc,
- N_uint32 id,
- void _FAR_ *funcs)
-{
- return __GA_exports.GA_queryFunctions(dc,id,funcs);
-}
-
-/****************************************************************************
-REMARKS:
-Nothing special for this OS
-****************************************************************************/
-ibool NAPI REF2D_queryFunctions(
- REF2D_driver *ref2d,
- N_uint32 id,
- void _FAR_ *funcs)
-{
- return __GA_exports.REF2D_queryFunctions(ref2d,id,funcs);
-}
-#endif
-
-/****************************************************************************
-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;
- }
-}