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 ****************************************************************************/
34 /*----------------------------- Implementation ----------------------------*/
36 /****************************************************************************
38 Increase the thread priority to maximum, if possible.
39 ****************************************************************************/
40 static int SetMaxThreadPriority(void)
42 thread_id thid = find_thread(NULL);
44 get_thread_info(thid, &tinfo);
45 set_thread_priority(thid, B_REAL_TIME_PRIORITY);
46 return tinfo.priority;
49 /****************************************************************************
51 Restore the original thread priority.
52 ****************************************************************************/
53 static void RestoreThreadPriority(
56 thread_id thid = find_thread(NULL);
57 set_thread_priority(thid, priority);
60 /****************************************************************************
62 Initialise the counter and return the frequency of the counter.
63 ****************************************************************************/
64 static void GetCounterFrequency(
65 CPU_largeInteger *freq)
67 /* TODO: Return the frequency of the counter in here. You should try to */
68 /* normalise this value to be around 100,000 ticks per second. */
73 /****************************************************************************
75 Read the counter and return the counter value.
77 TODO: Implement this to read the counter. It should be done as a macro
79 ****************************************************************************/
80 #define GetCounter(t) { *((bigtime_t*) t) = system_time(); }