1 /****************************************************************************
3 * Ultra Long Period Timer
5 * ========================================================================
7 * The contents of this file are subject to the SciTech MGL Public
8 * License Version 1.0 (the "License"); you may not use this file
9 * except in compliance with the License. You may obtain a copy of
10 * the License at http://www.scitechsoft.com/mgl-license.txt
12 * Software distributed under the License is distributed on an
13 * "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14 * implied. See the License for the specific language governing
15 * rights and limitations under the License.
17 * The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
19 * The Initial Developer of the Original Code is SciTech Software, Inc.
20 * All Rights Reserved.
22 * ========================================================================
25 * Environment: *** TODO: ADD YOUR OS ENVIRONMENT NAME HERE ***
27 * Description: Module to implement OS specific services to measure the
30 ****************************************************************************/
32 /*----------------------------- Implementation ----------------------------*/
34 /****************************************************************************
36 Increase the thread priority to maximum, if possible.
37 ****************************************************************************/
38 static int SetMaxThreadPriority(void)
40 /* TODO: If you have thread priorities, increase it to maximum for the */
41 /* thread for timing the CPU frequency. */
45 /****************************************************************************
47 Restore the original thread priority.
48 ****************************************************************************/
49 static void RestoreThreadPriority(
52 /* TODO: Restore the original thread priority on exit. */
55 /****************************************************************************
57 Initialise the counter and return the frequency of the counter.
58 ****************************************************************************/
59 static void GetCounterFrequency(
60 CPU_largeInteger *freq)
62 /* TODO: Return the frequency of the counter in here. You should try to */
63 /* normalise this value to be around 100,000 ticks per second. */
68 /****************************************************************************
70 Read the counter and return the counter value.
72 TODO: Implement this to read the counter. It should be done as a macro
74 ****************************************************************************/
75 #define GetCounter(t) \