Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
branch: master
Fetching contributors…

Cannot retrieve contributors at this time

286 lines (252 sloc) 8.551 kb
/*
* 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"
/* Number of test loops for stress-test */
#define NUM_TEST_LOOPS 10000
/* Number of test threads */
#define NUM_TEST_THREADS 4
/* 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];
/*
* Global failure count (can be updated by test threads but is
* protected by an interrupt lockout).
*/
static volatile int g_failures;
/* Forward declarations */
static void test_thread_func (uint32_t param);
/**
* \b test_start
*
* Start semaphore test.
*
* Stress-tests semaphore Get and Put operations. Four threads are created which are
* continually Getting and Putting the same semaphore, with no time delays between
* each Get/Put. A single semaphore is used, which is initially created with a count
* of two, meaning that at any one time there should be threads blocking and not
* blocking. This ensures that the stress-test covers multiple threads accessing the
* semaphore APIs simultaneously, as well as usage of the APIs while other threads
* are blocking on the semaphore.
*
* @retval Number of g_failures
*/
uint32_t test_start (void)
{
CRITICAL_STORE;
int finish_cnt;
/* Default to zero g_failures */
g_failures = 0;
/* Create sem to stress with count two */
if (atomSemCreate (&sem1, 2) != ATOM_OK)
{
ATOMLOG (_STR("Error creating test semaphore 1\n"));
g_failures++;
}
/* Create sem to receive thread-finished notification */
else if (atomSemCreate (&sem2, 0) != ATOM_OK)
{
ATOMLOG (_STR("Error creating test semaphore 1\n"));
g_failures++;
}
else
{
/* Create Thread 1 */
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"));
CRITICAL_START ();
g_failures++;
CRITICAL_END ();
}
/* Create Thread 2 */
if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 2,
&test_thread_stack[1][0],
TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
{
/* Fail */
ATOMLOG (_STR("Error creating test thread\n"));
CRITICAL_START ();
g_failures++;
CRITICAL_END ();
}
/* Create Thread 3 */
if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 3,
&test_thread_stack[2][0],
TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
{
/* Fail */
ATOMLOG (_STR("Error creating test thread\n"));
CRITICAL_START ();
g_failures++;
CRITICAL_END ();
}
/* Create Thread 4 */
if (atomThreadCreate(&tcb[3], TEST_THREAD_PRIO, test_thread_func, 4,
&test_thread_stack[3][0],
TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
{
/* Fail */
ATOMLOG (_STR("Error creating test thread\n"));
CRITICAL_START ();
g_failures++;
CRITICAL_END ();
}
/*
* All four threads will now be performing Gets/Puts on sem1.
* When they have finished they will post sem2, so we wait
* until sem2 is posted four times.
*/
finish_cnt = 0;
while (1)
{
/*
* Attempt to Get sem2. When we have managed to get
* the semaphore four times, it must have been posted
* by all four threads.
*/
if (atomSemGet (&sem2, 0) == ATOM_OK)
{
/* Increment our count of finished threads */
finish_cnt++;
/* Check if all four threads have now posted sem2 */
if (finish_cnt == 4)
{
break;
}
}
}
/* Delete semaphores, test finished */
if (atomSemDelete (&sem1) != ATOM_OK)
{
ATOMLOG (_STR("Delete failed\n"));
CRITICAL_START ();
g_failures++;
CRITICAL_END ();
}
if (atomSemDelete (&sem2) != ATOM_OK)
{
ATOMLOG (_STR("Delete failed\n"));
CRITICAL_START ();
g_failures++;
CRITICAL_END ();
}
}
/* 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"));
g_failures++;
}
else
{
/* Check the thread did not use up to the end of stack */
if (free_bytes == 0)
{
ATOMLOG (_STR("StackOverflow %d\n"), thread);
g_failures++;
}
/* Log the stack usage */
#ifdef TESTS_LOG_STACK_USAGE
ATOMLOG (_STR("StackUse:%d\n"), (int)used_bytes);
#endif
}
}
}
#endif
/* Quit */
return g_failures;
}
/**
* \b test_thread_func
*
* Entry point for test thread. The same thread entry point is used for all
* four test threads.
*
* @param[in] param Unused (optional thread entry parameter)
*
* @return None
*/
static void test_thread_func (uint32_t param)
{
uint32_t loop_cnt;
uint8_t status;
CRITICAL_STORE;
/* Compiler warnings */
param = param;
/* Run a Get/Put pair many times */
loop_cnt = NUM_TEST_LOOPS;
while (loop_cnt--)
{
if ((status = atomSemGet (&sem1, 0)) != ATOM_OK)
{
/* Error getting semaphore, notify the status code */
ATOMLOG (_STR("G%d\n"), status);
CRITICAL_START ();
g_failures++;
CRITICAL_END ();
break;
}
else if ((status = atomSemPut (&sem1)) != ATOM_OK)
{
/* Error putting semaphore, notify the status code */
ATOMLOG (_STR("P%d\n"), status);
CRITICAL_START ();
g_failures++;
CRITICAL_END ();
break;
}
}
/* Post sem2 to notify the main thread we're finished */
if (atomSemPut (&sem2) != ATOM_OK)
{
ATOMLOG (_STR("Sem2 putfail\n"));
CRITICAL_START ();
g_failures++;
CRITICAL_END ();
}
/* Loop forever */
while (1)
{
atomTimerDelay (SYSTEM_TICKS_PER_SEC);
}
}
Jump to Line
Something went wrong with that request. Please try again.