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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 "atomqueue.h"
#include "atomtests.h"


/* Test queue size */
#define QUEUE_ENTRIES 8


/* Number of test threads */
#define NUM_TEST_THREADS 3


/* Test OS objects */
static ATOM_QUEUE queue1;
static uint8_t queue1_storage[QUEUE_ENTRIES];
static ATOM_TCB tcb[NUM_TEST_THREADS];
static uint8_t test_thread_stack[NUM_TEST_THREADS][TEST_THREAD_STACK_SIZE];


/* Test results */
static volatile int pass_flag[3];


/* Forward declarations */
static void test_thread_func (uint32_t data);


/**
* \b test_start
*
* Start queue test.
*
* This test verifies the queue deletion API, by deleting a queue
* on which multiple threads are blocking, and checking that all three
* are woken up with an appropriate error code.
*
* @retval Number of failures
*/
uint32_t test_start (void)
{
    int failures;
    int i;

    /* Default to zero failures */
    failures = 0;

    /* Initialise pass status for all three threads to FALSE */
    for (i = 0; i < 3; i++)
    {
        pass_flag[i] = FALSE;
    }

    /* Test wakeup of three threads on queue deletion */
    if (atomQueueCreate (&queue1, &queue1_storage[0], sizeof(queue1_storage[0]), QUEUE_ENTRIES) != ATOM_OK)
    {
        ATOMLOG (_STR("Error creating Q\n"));
        failures++;
    }

    else
    {
        /* The queue is empty so all three test threads will block */

        /* Create test thread 1 */
        if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 0,
                  &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
        {
            /* Fail */
            ATOMLOG (_STR("Error creating test thread 1\n"));
            failures++;
        }

        /* Create test thread 2 */
        else if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 1,
                  &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
        {
            /* Fail */
            ATOMLOG (_STR("Error creating test thread 2\n"));
            failures++;
        }

        /* Create test thread 3 */
        else if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 2,
                  &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
        {
            /* Fail */
            ATOMLOG (_STR("Error creating test thread 3\n"));
            failures++;
        }

        /* Test threads now created */
        else
        {
            /* Wait a while for threads to start blocking on queue1 */
            atomTimerDelay (SYSTEM_TICKS_PER_SEC/4);

            /* Delete queue1 now that all three threads should be blocking */
            if (atomQueueDelete (&queue1) != ATOM_OK)
            {
                ATOMLOG (_STR("Delete fail\n"));
                failures++;
            }
            else
            {
                /* Wait a while for all three threads to wake up */
                atomTimerDelay (SYSTEM_TICKS_PER_SEC/4);

                /* Check that all three threads have passed */
                if ((pass_flag[0] != TRUE) || (pass_flag[1] != TRUE) || (pass_flag[2] != TRUE))
                {
                    ATOMLOG (_STR("Thread fail\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 threads.
*
* @param[in] data Thread ID (0-2)
*
* @return None
*/
static void test_thread_func (uint32_t data)
{
    uint8_t status;
    uint8_t msg;
    int thread_id;

    /* Pull out the passed thread ID */
    thread_id = (int)data;

    /*
* Wait on queue1 with timeout. We are expecting to be woken up
* by the main thread while blocking.
*/
    status = atomQueueGet(&queue1, (5 * SYSTEM_TICKS_PER_SEC), &msg);
    if (status != ATOM_ERR_DELETED)
    {
        ATOMLOG (_STR("Test1 thread woke without deletion (%d)\n"), status);
    }
    else
    {
        /* We were woken due to deletion as expected, set pass_flag to notify success */
        pass_flag[thread_id] = TRUE;
    }

    /* Wait forever */
    while (1)
    {
        atomTimerDelay (SYSTEM_TICKS_PER_SEC);
    }
}
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