mirror of
https://github.com/azure-rtos/threadx
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209 lines
7.4 KiB
C
209 lines
7.4 KiB
C
/**************************************************************************/
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/* */
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/* Copyright (c) Microsoft Corporation. All rights reserved. */
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/* */
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/* This software is licensed under the Microsoft Software License */
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
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/* and in the root directory of this software. */
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/* */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** Thread-Metric Component */
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/** */
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/** Interrupt Processing Test */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* tm_interrupt_processing_test PORTABLE C */
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/* 6.1.7 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This file defines the No-preemption interrupt processing test. */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 10-15-2021 William E. Lamie Initial Version 6.1.7 */
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/* */
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/**************************************************************************/
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#include "tm_api.h"
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/* Define the counters used in the demo application... */
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unsigned long tm_interrupt_thread_0_counter;
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unsigned long tm_interrupt_handler_counter;
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/* Define the test thread prototypes. */
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void tm_interrupt_thread_0_entry(void);
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void tm_interrupt_handler_entry(void);
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/* Define the reporting thread prototype. */
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void tm_interrupt_thread_report(void);
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/* Define the interrupt handler. This must be called from the RTOS. */
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void tm_interrupt_handler(void);
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/* Define the initialization prototype. */
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void tm_interrupt_processing_initialize(void);
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/* Define main entry point. */
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void tm_main()
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{
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/* Initialize the test. */
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tm_initialize(tm_interrupt_processing_initialize);
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}
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/* Define the interrupt processing test initialization. */
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void tm_interrupt_processing_initialize(void)
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{
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/* Create thread that generates the interrupt at priority 10. */
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tm_thread_create(0, 10, tm_interrupt_thread_0_entry);
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/* Create a semaphore that will be posted from the interrupt
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handler. */
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tm_semaphore_create(0);
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/* Resume just thread 0. */
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tm_thread_resume(0);
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/* Create the reporting thread. It will preempt the other
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threads and print out the test results. */
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tm_thread_create(5, 2, tm_interrupt_thread_report);
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tm_thread_resume(5);
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}
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/* Define the thread that generates the interrupt. */
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void tm_interrupt_thread_0_entry(void)
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{
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int status;
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/* Pickup the semaphore since it is initialized to 1 by default. */
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status = tm_semaphore_get(0);
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/* Check for good status. */
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if (status != TM_SUCCESS)
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return;
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while(1)
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{
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/* Force an interrupt. The underlying RTOS must see that the
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the interrupt handler is called from the appropriate software
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interrupt or trap. */
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TM_CAUSE_INTERRUPT
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/* We won't get back here until the interrupt processing is complete,
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including the setting of the semaphore from the interrupt
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handler. */
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/* Pickup the semaphore set by the interrupt handler. */
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status = tm_semaphore_get(0);
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/* Check for good status. */
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if (status != TM_SUCCESS)
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return;
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/* Increment this thread's counter. */
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tm_interrupt_thread_0_counter++;
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}
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}
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/* Define the interrupt handler. This must be called from the RTOS trap handler.
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To be fair, it must behave just like a processor interrupt, i.e. it must save
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the full context of the interrupted thread during the preemption processing. */
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void tm_interrupt_handler(void)
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{
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/* Increment the interrupt count. */
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tm_interrupt_handler_counter++;
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/* Put the semaphore from the interrupt handler. */
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tm_semaphore_put(0);
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}
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/* Define the interrupt test reporting thread. */
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void tm_interrupt_thread_report(void)
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{
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unsigned long total;
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unsigned long last_total;
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unsigned long relative_time;
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unsigned long average;
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/* Initialize the last total. */
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last_total = 0;
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/* Initialize the relative time. */
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relative_time = 0;
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while(1)
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{
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/* Sleep to allow the test to run. */
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tm_thread_sleep(TM_TEST_DURATION);
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/* Increment the relative time. */
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relative_time = relative_time + TM_TEST_DURATION;
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/* Print results to the stdio window. */
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printf("**** Thread-Metric Interrupt Processing Test **** Relative Time: %lu\n", relative_time);
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/* Calculate the total of all the counters. */
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total = tm_interrupt_thread_0_counter + tm_interrupt_handler_counter;
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/* Calculate the average of all the counters. */
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average = total/2;
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/* See if there are any errors. */
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if ((tm_interrupt_thread_0_counter < (average - 1)) ||
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(tm_interrupt_thread_0_counter > (average + 1)) ||
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(tm_interrupt_handler_counter < (average - 1)) ||
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(tm_interrupt_handler_counter > (average + 1)))
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{
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printf("ERROR: Invalid counter value(s). Interrupt processing test has failed!\n");
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}
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/* Show the total interrupts for the time period. */
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printf("Time Period Total: %lu\n\n", tm_interrupt_handler_counter - last_total);
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/* Save the last total number of interrupts. */
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last_total = tm_interrupt_handler_counter;
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}
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}
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