main.c
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/*
* Copyright (C) 2014 Hamburg University of Applied Sciences
*
* 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 riot thread test application
*
* @author Raphael Hiesgen <raphael.hiesgen@haw-hamburg.de>
*
* @}
*/
#include <stdio.h>
#include <inttypes.h>
#include "thread.h"
#include "mutex.h"
#define PROBLEM 12
mutex_t mtx = MUTEX_INIT;
volatile uint32_t storage = 1;
kernel_pid_t main_id = KERNEL_PID_UNDEF;
kernel_pid_t ths[PROBLEM];
char stacks[PROBLEM][THREAD_STACKSIZE_MAIN];
void *run(void *arg)
{
(void) arg;
kernel_pid_t me = thread_getpid();
printf("I am alive (%d)\n", me);
msg_t m;
msg_receive(&m);
printf("Thread %d has arg %" PRIu32 "\n", me, m.content.value);
mutex_lock(&mtx);
storage *= m.content.value;
mutex_unlock(&mtx);
msg_t final;
final.content.value = me;
int err = msg_send(&final, main_id);
if (err < 0) {
printf("[!!!] Failed to send message from %d to main\n", me);
}
return NULL;
}
int main(void)
{
main_id = thread_getpid();
printf("Problem: %d\n", PROBLEM);
msg_t args[PROBLEM];
for (int i = 0; i < PROBLEM; ++i) {
printf("Creating thread with arg %d\n", (i + 1));
ths[i] = thread_create(stacks[i], sizeof(stacks[i]),
THREAD_PRIORITY_MAIN - 1,
THREAD_CREATE_WOUT_YIELD | THREAD_CREATE_STACKTEST,
run, NULL, "thread");
if (ths[i] < 0) {
printf("[!!!] Creating thread failed.\n");
}
else {
args[i].content.value = i + 1;
int err = msg_send(&args[i], ths[i]);
if (err < 0) {
printf("[!!!] Sending message to thread %d failed\n", ths[i]);
}
}
}
for (int i = 0; i < PROBLEM; ++i) {
msg_t msg;
msg_receive(&msg);
printf("Reveiced message %d from thread %" PRIu32 "\n", i, msg.content.value);
}
printf("Factorial: %"PRIu32"\n", storage);
if (storage != 479001600LU) {
puts("[!!!] Error, expected: 12!= 479001600.");
}
puts("finished");
return 0;
}