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- /****************************************************************************
- *
- * 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: *** TODO: ADD YOUR OS ENVIRONMENT NAME HERE ***
- *
- * Description: Module to implement OS specific services to measure the
- * CPU frequency.
- *
- ****************************************************************************/
- #include <OS.h>
- /*----------------------------- Implementation ----------------------------*/
- /****************************************************************************
- REMARKS:
- Increase the thread priority to maximum, if possible.
- ****************************************************************************/
- static int SetMaxThreadPriority(void)
- {
- thread_id thid = find_thread(NULL);
- thread_info tinfo;
- get_thread_info(thid, &tinfo);
- set_thread_priority(thid, B_REAL_TIME_PRIORITY);
- return tinfo.priority;
- }
- /****************************************************************************
- REMARKS:
- Restore the original thread priority.
- ****************************************************************************/
- static void RestoreThreadPriority(
- int priority)
- {
- thread_id thid = find_thread(NULL);
- set_thread_priority(thid, priority);
- }
- /****************************************************************************
- REMARKS:
- Initialise the counter and return the frequency of the counter.
- ****************************************************************************/
- static void GetCounterFrequency(
- CPU_largeInteger *freq)
- {
- /* TODO: Return the frequency of the counter in here. You should try to */
- /* normalise this value to be around 100,000 ticks per second. */
- freq->low = 1000000;
- freq->high = 0;
- }
- /****************************************************************************
- REMARKS:
- Read the counter and return the counter value.
- TODO: Implement this to read the counter. It should be done as a macro
- for accuracy.
- ****************************************************************************/
- #define GetCounter(t) { *((bigtime_t*) t) = system_time(); }
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