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/*
* Copyright (c) 2010, Kelvin Lawson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. No personal names or organizations' names associated with the
* Atomthreads project may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "atom.h"
#include "atomtests.h"
#include "atomsem.h"
/* Semaphore count */
#define INITIAL_SEM_COUNT 10
/* Number of test threads */
#define NUM_TEST_THREADS 1
/* Test OS objects */
static ATOM_SEM sem1, sem2;
static ATOM_TCB tcb[NUM_TEST_THREADS];
static uint8_t test_thread_stack[NUM_TEST_THREADS][TEST_THREAD_STACK_SIZE];
/* Forward declarations */
static void test_thread_func (uint32_t param);
/**
* \b test_start
*
* Start semaphore test.
*
* This tests basic counting semaphore operation between two threads.
*
* A semaphore is created with a count of 10. A second thread then
* ensures that it can decrement the semaphore 10 times before
* it can no longer be decremented.
*
* @retval Number of failures
*/
uint32_t test_start (void)
{
int failures;
/* Default to zero failures */
failures = 0;
/* Create sem with count ten for second thread to decrement */
if (atomSemCreate (&sem1, INITIAL_SEM_COUNT) != ATOM_OK)
{
ATOMLOG (_STR("Error creating test semaphore 1\n"));
failures++;
}
/* Create sem to receive test-passed notification */
else if (atomSemCreate (&sem2, 0) != ATOM_OK)
{
ATOMLOG (_STR("Error creating test semaphore 1\n"));
failures++;
}
else
{
/* Check that sem2 doesn't already have a positive count */
if (atomSemGet (&sem2, -1) != ATOM_WOULDBLOCK)
{
ATOMLOG (_STR("Sem2 already put\n"));
failures++;
}
/* Create second thread */
else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
&test_thread_stack[0][0],
TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
{
/* Fail */
ATOMLOG (_STR("Error creating test thread\n"));
failures++;
}
/*
* The second thread has now been created and will attempt to
* decrement sem1 ten times, then finally check that it cannot
* decrement it any further. If this passes then the second
* thread will post sem2 to notify us that the test has passed.
*/
else
{
/* Give the second thread one second to post sem2 */
if (atomSemGet (&sem2, SYSTEM_TICKS_PER_SEC) != ATOM_OK)
{
ATOMLOG (_STR("Sem2 not posted\n"));
failures++;
}
}
/* Delete semaphores, test finished */
if (atomSemDelete (&sem1) != ATOM_OK)
{
ATOMLOG (_STR("Delete failed\n"));
failures++;
}
if (atomSemDelete (&sem2) != ATOM_OK)
{
ATOMLOG (_STR("Delete failed\n"));
failures++;
}
}
/* Check thread stack usage (if enabled) */
#ifdef ATOM_STACK_CHECKING
{
uint32_t used_bytes, free_bytes;
int thread;
/* Check all threads */
for (thread = 0; thread < NUM_TEST_THREADS; thread++)
{
/* Check thread stack usage */
if (atomThreadStackCheck (&tcb[thread], &used_bytes, &free_bytes) != ATOM_OK)
{
ATOMLOG (_STR("StackCheck\n"));
failures++;
}
else
{
/* Check the thread did not use up to the end of stack */
if (free_bytes == 0)
{
ATOMLOG (_STR("StackOverflow %d\n"), thread);
failures++;
}
/* Log the stack usage */
#ifdef TESTS_LOG_STACK_USAGE
ATOMLOG (_STR("StackUse:%d\n"), (int)used_bytes);
#endif
}
}
}
#endif
/* Quit */
return failures;
}
/**
* \b test_thread_func
*
* Entry point for test thread.
*
* @param[in] param Unused (optional thread entry parameter)
*
* @return None
*/
static void test_thread_func (uint32_t param)
{
uint8_t status;
int count;
int failures;
/* Compiler warnings */
param = param;
/*
* Attempt to decrement sem1 ten times, which should happen immediately
* each time.
*/
failures = 0;
count = INITIAL_SEM_COUNT;
while (count--)
{
/* Decrement sem1 */
if ((status = atomSemGet (&sem1, -1)) != ATOM_OK)
{
/* Error decrementing semaphore, notify the status code */
ATOMLOG (_STR("G%d\n"), status);
failures++;
}
}
/* Check above stage was successful */
if (failures == 0)
{
/* Sem1 should now have a count of zero, and not allow a decrement */
if ((status = atomSemGet (&sem1, -1)) != ATOM_WOULDBLOCK)
{
/* Error getting semaphore, notify the status code */
ATOMLOG (_STR("W%d\n"), status);
}
/* Post sem2 to notify that the test passed */
else if ((status = atomSemPut (&sem2)) != ATOM_OK)
{
/* Error putting semaphore, notify the status code */
ATOMLOG (_STR("P%d\n"), status);
}
}
/* Loop forever */
while (1)
{
atomTimerDelay (SYSTEM_TICKS_PER_SEC);
}
}