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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 16


/* Number of test threads */
#define NUM_TEST_THREADS 2


/* 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 result tracking */
static volatile int g_result;


/* Forward declarations */
static void test1_thread_func (uint32_t param);
static void test2_thread_func (uint32_t param);


/**
* \b test_start
*
* Start queue test.
*
* This test exercises queue deletion, waking threads blocking on a queue
* in atomQueueGet() if the queue is deleted.
*
* Deletion wakeups are tested twice: once for a thread which is blocking
* in atomQueueGet() with a timeout and once for a thread which is
* blocking in atomQueueGet() with no timeout.
*
* Deletion of threads blocking in atomQueuePut() are tested in queue3.c.
*
* @retval Number of failures
*/
uint32_t test_start (void)
{
    int failures;

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

    /* Test wakeup of threads on queue deletion (thread blocking with no timeout) */
    g_result = 0;
    if (atomQueueCreate (&queue1, &queue1_storage[0], sizeof(uint8_t), QUEUE_ENTRIES) != ATOM_OK)
    {
        ATOMLOG (_STR("Error creating test queue\n"));
        failures++;
    }

    /* Create a test thread that will block because the queue is empty */
    else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test1_thread_func, 0,
              &test_thread_stack[0][0],
              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
    {
        /* Fail */
        ATOMLOG (_STR("Error creating test thread 1\n"));
        failures++;
    }
    else
    {

        /*
* We have created an empty queue. We want to see that the other
* thread is woken up if its queue is deleted. This is indicated
* through g_result being set.
*/

        /* Wait for the other thread to start blocking on queue1 */
        if (atomTimerDelay(SYSTEM_TICKS_PER_SEC) != ATOM_OK)
        {
            ATOMLOG (_STR("Failed timer delay\n"));
            failures++;
        }
        else
        {
            /* The other thread will be blocking on queue1 now, delete queue1 */
            if (atomQueueDelete(&queue1) != ATOM_OK)
            {
                ATOMLOG (_STR("Failed queue1 delete\n"));
                failures++;
            }
            else
            {
                /* Queue1 deleted. The thread should now wake up and set g_result. */
                atomTimerDelay (SYSTEM_TICKS_PER_SEC);
                if (g_result == 0)
                {
                    ATOMLOG (_STR("Notify fail\n"));
                    failures++;
                }
                else
                {
                    /* Success */
                }
            }
        }
    }

    /* Test wakeup of threads on semaphore deletion (thread blocking with timeout) */
    g_result = 0;
    if (atomQueueCreate (&queue1, &queue1_storage[0], sizeof(uint8_t), QUEUE_ENTRIES) != ATOM_OK)
    {
        ATOMLOG (_STR("Error creating test queue\n"));
        failures++;
    }

    /* Create a test thread that will block because the queue is empty */
    else if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test2_thread_func, 0,
              &test_thread_stack[1][0],
              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
    {
        /* Fail */
        ATOMLOG (_STR("Error creating test thread 2\n"));
        failures++;
    }
    else
    {

        /*
* We have created an empty queue. We want to see that the other
* thread is woken up if its queue is deleted. This is indicated
* through g_result being set.
*/

        /* Wait for the other thread to start blocking on queue1 */
        if (atomTimerDelay(SYSTEM_TICKS_PER_SEC) != ATOM_OK)
        {
            ATOMLOG (_STR("Failed timer delay\n"));
            failures++;
        }
        else
        {
            /* The other thread will be blocking on queue1 now, delete queue1 */
            if (atomQueueDelete(&queue1) != ATOM_OK)
            {
                ATOMLOG (_STR("Failed queue1 delete\n"));
                failures++;
            }
            else
            {
                /* Queue1 deleted. The thread should now wake up and set g_result. */
                atomTimerDelay (SYSTEM_TICKS_PER_SEC);
                if (g_result == 0)
                {
                    ATOMLOG (_STR("Notify fail\n"));
                    failures++;
                }
                else
                {
                    /* Success */
                }
            }
        }
    }

    /* 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 test1_thread_func
*
* Entry point for test thread 1.
*
* @param[in] param Unused (optional thread entry parameter)
*
* @return None
*/
static void test1_thread_func (uint32_t param)
{
    uint8_t status, msg;

    /* Compiler warnings */
    param = param;

    /*
* Wait on queue1 with no timeout. We are expecting to be woken up
* by the main thread while blocking.
*/
    status = atomQueueGet(&queue1, 0, &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 g_result to notify success */
        g_result = 1;
    }

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


/**
* \b test2_thread_func
*
* Entry point for test thread 2.
*
* @param[in] param Unused (optional thread entry parameter)
*
* @return None
*/
static void test2_thread_func (uint32_t param)
{
    uint8_t status, msg;

    /* Compiler warnings */
    param = param;

    /*
* 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("Test2 thread woke without deletion (%d)\n"), status);
    }
    else
    {
        /* We were woken due to deletion as expected, set g_result to notify success */
        g_result = 1;
    }

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