a752c7ab
 elopes
add first test an...
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/*
* Copyright (C) 2016 Theobroma Systems Design & Consulting GmbH
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup tests
* @{
*
* @file
* @brief Test application for testing recursive mutexes
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Martin Elshuber <martin.elshuber@theobroma-systems.com>
* @}
*/
#include <stdio.h>
#include "rmutex.h"
#include "thread.h"
#define THREAD_NUMOF (5U)
extern volatile thread_t *sched_active_thread;
static char stacks[THREAD_NUMOF][THREAD_STACKSIZE_MAIN];
static const char prios[THREAD_NUMOF] = {THREAD_PRIORITY_MAIN - 1, 4, 5, 2, 4};
static const char depth[THREAD_NUMOF] = {5, 3, 3, 4, 5};
static rmutex_t testlock;
static void lock_recursive(char n, char depth)
{
volatile thread_t *t = sched_active_thread;
printf("T%i (prio %i, depth %i): trying to lock rmutex now\n",
(int)t->pid, (int)t->priority, (int)n);
rmutex_lock(&testlock);
printf("T%i (prio %i, depth %i): locked rmutex now\n",
(int)t->pid, (int)t->priority, (int)n);
if (n + 1 < depth)
lock_recursive(n + 1, depth);
thread_yield();
rmutex_unlock(&testlock);
printf("T%i (prio %i, depth %i): unlocked rmutex\n",
(int)t->pid, (int)t->priority, (int)n);
}
static void *lockme(void *arg)
{
intptr_t depth = (intptr_t)arg;
lock_recursive(0, depth);
return NULL;
}
int main(void)
{
puts("Recursive Mutex test");
puts("Please refer to the README.md for more information\n");
rmutex_init(&testlock);
/* lock mutex, so that spawned threads have to wait */
rmutex_lock(&testlock);
/* create threads */
for (unsigned i = 0; i < THREAD_NUMOF; i++) {
thread_create(stacks[i], sizeof(stacks[i]), prios[i], 0,
lockme, (void*)(intptr_t)depth[i], "t");
}
/* allow threads to lock the mutex */
printf("main: unlocking recursive mutex\n");
rmutex_unlock(&testlock);
rmutex_lock(&testlock);
puts("\nTest END, check the order of priorities above.");
return 0;
}
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