| /**************************************************************************** |
| * |
| * Ultra Long Period Timer |
| * |
| * ======================================================================== |
| * |
| * The contents of this file are subject to the SciTech MGL Public |
| * License Version 1.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at http://www.scitechsoft.com/mgl-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. |
| * |
| * The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc. |
| * |
| * The Initial Developer of the Original Code is SciTech Software, Inc. |
| * All Rights Reserved. |
| * |
| * ======================================================================== |
| * |
| * Language: ANSI C |
| * Environment: DOS |
| * |
| * Description: MSDOS specific code for the CPU detection module. |
| * |
| ****************************************************************************/ |
| |
| /*----------------------------- Implementation ----------------------------*/ |
| |
| /* External timing function */ |
| |
| void __ZTimerInit(void); |
| |
| /**************************************************************************** |
| REMARKS: |
| Do nothing for DOS because we don't have thread priorities. |
| ****************************************************************************/ |
| #define SetMaxThreadPriority() 0 |
| |
| /**************************************************************************** |
| REMARKS: |
| Do nothing for DOS because we don't have thread priorities. |
| ****************************************************************************/ |
| #define RestoreThreadPriority(i) (void)(i) |
| |
| /**************************************************************************** |
| REMARKS: |
| Initialise the counter and return the frequency of the counter. |
| ****************************************************************************/ |
| static void GetCounterFrequency( |
| CPU_largeInteger *freq) |
| { |
| ulong resolution; |
| |
| __ZTimerInit(); |
| ULZTimerResolution(&resolution); |
| freq->low = (ulong)(10000000000.0 / resolution); |
| freq->high = 0; |
| } |
| |
| /**************************************************************************** |
| REMARKS: |
| Read the counter and return the counter value. |
| ****************************************************************************/ |
| #define GetCounter(t) \ |
| { \ |
| (t)->low = ULZReadTime() * 10000L; \ |
| (t)->high = 0; \ |
| } |