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RIOT/tests/pthread_cooperation/main.c 1.5 KB
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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 pthread test application
   *
   * @author Raphael Hiesgen <raphael.hiesgen@haw-hamburg.de>
   *
   * @}
   */
  
  #include <stdio.h>
  #include <pthread.h>
  
  #define NUM_THREADS 12
  
  pthread_t ths[NUM_THREADS];
  
  pthread_mutex_t mtx;
  volatile int storage = 1;
  
  void *run(void *parameter)
  {
      int arg = (int) parameter;
      printf("My arg: %d\n", arg);
  
      int err = pthread_mutex_lock(&mtx);
  
      if (err != 0) {
          printf("[!!!] pthread_mutex_lock failed with %d\n", err);
          return NULL;
      }
  
      storage *= arg;
      printf("val = %d\n", storage);
      pthread_mutex_unlock(&mtx);
  
      return NULL;
  }
  
  int main(void)
  {
      pthread_attr_t th_attr;
      pthread_attr_init(&th_attr);
      pthread_mutex_init(&mtx, NULL);
  
      for (int i = 0; i < NUM_THREADS; ++i) {
          printf("Creating thread with arg %d\n", (i + 1));
          pthread_create(&ths[i], &th_attr, run, (void *)(i + 1));
      }
  
      for (int i = 0; i < NUM_THREADS; ++i) {
          printf("join\n");
          pthread_join(ths[i], NULL);
      }
  
      printf("Factorial: %d\n", storage);
  
      if (storage != 479001600) {
          puts("[!!!] Error, expected: 12!= 479001600.");
      }
  
      pthread_mutex_destroy(&mtx);
      pthread_attr_destroy(&th_attr);
  
      puts("finished");
      return 0;
  }