mirror of
https://github.com/kelvinlawson/atomthreads.git
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321 lines
9.6 KiB
C
321 lines
9.6 KiB
C
/*
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* Copyright (c) 2010, Kelvin Lawson. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. No personal names or organizations' names associated with the
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* Atomthreads project may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "atom.h"
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#include "atomtests.h"
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#include "atomsem.h"
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/* Number of test threads */
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#define NUM_TEST_THREADS 3
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/* Test OS objects */
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static ATOM_SEM sem1;
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static ATOM_TCB tcb[NUM_TEST_THREADS];
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static uint8_t test_thread_stack[NUM_TEST_THREADS][TEST_THREAD_STACK_SIZE];
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/* Test running flag */
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static volatile int test_running;
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/* Forward declarations */
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static void test_thread_func (uint32_t param);
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static void testCallback (POINTER cb_data);
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/**
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* \b test_start
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*
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* Start semaphore test.
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*
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* This stress-tests atomSemGet()/atomSemPut() with a single thread
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* continually calling atomSemGet() and several contexts continually
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* calling atomSemPut(). This stresses in particular the atomSemPut()
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* API, with three threads at different priorities posting
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* simultaneously, as well as a timer callback posting it from
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* interrupt context. In all cases the same semaphore is posted.
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*
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* This tests the thread-safety and interrupt-safety of the semaphore
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* APIs, and particularly the atomSemPut() function.
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*
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* @retval Number of failures
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*/
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uint32_t test_start (void)
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{
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int failures;
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uint32_t end_time;
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ATOM_TIMER timer_cb;
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/* Default to zero failures */
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failures = 0;
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/* Create sem with count of zero */
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if (atomSemCreate (&sem1, 0) != ATOM_OK)
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{
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ATOMLOG (_STR("Error creating test semaphore 1\n"));
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failures++;
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}
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else
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{
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/* Set the test running flag */
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test_running = TRUE;
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/*
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* Fill out a timer callback request structure. Pass the timer
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* structure itself so that the callback can requeue the request.
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*/
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timer_cb.cb_func = testCallback;
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timer_cb.cb_data = &timer_cb;
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timer_cb.cb_ticks = 1;
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/*
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* Request a timer callback to run in one tick's time. The callback
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* will automatically queue another so that this happens repeatedly
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* until the test is flagged as finished.
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*/
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if (atomTimerRegister (&timer_cb) != ATOM_OK)
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{
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ATOMLOG (_STR("Error registering timer\n"));
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failures++;
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}
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/* Create thread 1: Higher priority than main thread so should sleep */
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else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO - 1, test_thread_func, 1,
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&test_thread_stack[0][0],
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TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
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{
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/* Fail */
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ATOMLOG (_STR("Error creating test thread 1\n"));
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failures++;
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}
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/* Create thread 2: Same priority as main thread so should not sleep */
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else if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 0,
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&test_thread_stack[1][0],
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TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
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{
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/* Fail */
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ATOMLOG (_STR("Error creating test thread 2\n"));
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failures++;
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}
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/* Create thread 3: Same priority as main thread so should not sleep */
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else if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO + 1, test_thread_func, 0,
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&test_thread_stack[2][0],
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TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
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{
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/* Fail */
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ATOMLOG (_STR("Error creating test thread 3\n"));
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failures++;
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}
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/* The test threads have now all been created */
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else
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{
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/*
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* Continually decrement the semaphore while the test threads
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* and timer callbacks are continually incrementing it. The
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* test finishes after this runs without error for 5 seconds.
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*/
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end_time = atomTimeGet() + (5 * SYSTEM_TICKS_PER_SEC);
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while (atomTimeGet() < end_time)
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{
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/* Decrement the semaphore */
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if (atomSemGet (&sem1, SYSTEM_TICKS_PER_SEC) != ATOM_OK)
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{
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ATOMLOG (_STR("SemGet\n"));
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failures++;
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break;
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}
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}
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/* Test finished, stop the other threads and timer callbacks */
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test_running = FALSE;
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/*
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* Wait before finishing: a timer callback could be due
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* shortly, and we allocated the timer structure off the
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* local call stack.
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*/
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atomTimerDelay(2);
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}
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/* Delete semaphores, test finished */
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if (atomSemDelete (&sem1) != ATOM_OK)
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{
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ATOMLOG (_STR("Delete failed\n"));
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failures++;
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}
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}
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/* Check thread stack usage (if enabled) */
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#ifdef ATOM_STACK_CHECKING
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{
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uint32_t used_bytes, free_bytes;
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int thread;
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/* Check all threads */
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for (thread = 0; thread < NUM_TEST_THREADS; thread++)
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{
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/* Check thread stack usage */
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if (atomThreadStackCheck (&tcb[thread], &used_bytes, &free_bytes) != ATOM_OK)
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{
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ATOMLOG (_STR("StackCheck\n"));
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failures++;
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}
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else
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{
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/* Check the thread did not use up to the end of stack */
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if (free_bytes == 0)
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{
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ATOMLOG (_STR("StackOverflow %d\n"), thread);
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failures++;
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}
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/* Log the stack usage */
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#ifdef TESTS_LOG_STACK_USAGE
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ATOMLOG (_STR("StackUse:%d\n"), (int)used_bytes);
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#endif
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}
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}
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}
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#endif
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/* Quit */
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return failures;
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}
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/**
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* \b test_thread_func
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*
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* Entry point for test thread.
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*
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* @param[in] param sleep_flag passed through here
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*
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* @return None
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*/
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static void test_thread_func (uint32_t param)
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{
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uint8_t status;
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int sleep_flag, count, failures;
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/* Were we requested to sleep occasionally? */
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sleep_flag = (int)param;
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/* Run until the main thread sets the finish flag or we get an error */
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failures = 0;
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while ((test_running == TRUE) && (failures == 0))
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{
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/* Post the semaphore 50 times */
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count = 50;
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while (count--)
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{
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/*
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* Post the semaphore. Allow overflows as these are likely
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* to occur when so many threads are posting the same
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* semaphore continually.
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*/
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status = atomSemPut (&sem1);
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if ((status != ATOM_OK) && (status != ATOM_ERR_OVF))
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{
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ATOMLOG (_STR("Put\n"));
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failures++;
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break;
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}
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}
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/*
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* If requested to do so, sleep for a tick. This only happens on threads which
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* are higher priority than the main test thread, and is necessary to allow
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* the main thread to actually run. For better stress-testing, same or lower
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* priority threads do not sleep.
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*/
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if (sleep_flag)
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{
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atomTimerDelay (1);
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}
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}
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/* Loop forever */
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while (1)
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{
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atomTimerDelay (SYSTEM_TICKS_PER_SEC);
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}
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}
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/**
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* \b testCallback
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*
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* Post the semaphore from interrupt context. This will be occurring while
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* atomSemPut() calls for the other threads are in progress, because it is
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* called by the system tick ISR. This tests that the APIs lockout
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* interrupts where necessary.
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*
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* Automatically requeues itself for one tick in the future, so this
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* continually fires until the finish flag is set.
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*
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* @param[in] cb_data Pointer to the original ATOM_TIMER structure
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*/
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static void testCallback (POINTER cb_data)
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{
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ATOM_TIMER *ptimer;
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uint8_t status;
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/* Pull out the original timer request */
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ptimer = (ATOM_TIMER *)cb_data;
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/* Post sem1 */
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status = atomSemPut (&sem1);
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if ((status != ATOM_OK) && (status != ATOM_ERR_OVF))
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{
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/* Error */
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}
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/* Enqueue another timer callback in one tick's time */
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if (test_running == TRUE)
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{
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/* Update the callback time and requeue */
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ptimer->cb_ticks = 1;
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if (atomTimerRegister (ptimer) != ATOM_OK)
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{
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}
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}
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else
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{
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/* Test finished, no more will be queued */
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}
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}
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