main.c

這是一個實時嵌入式作業系統 實作了MCS51 ARM等MCU

  for (i = 0; i <= NARGS; i++)
    {
      printf("user_main: argv[%d]=\"%s\"\n", i, argv[i]);
    }

  for (i = 1; i <= NARGS; i++)
    {
      if (strcmp(argv[i], g_argv[i-1]) != 0)
        {
          printf("user_main: ERROR argv[%d]:  Expected \"%s\" found \"%s\"\n",
                 i, g_argv[i-1], argv[i]);
        }
    }
  check_test_memory_usage();

  /* Check environment variables */
#ifndef CONFIG_DISABLE_ENVIRON
  show_environment(TRUE, TRUE, TRUE);

  unsetenv(g_var1_name);
  show_environment(FALSE, TRUE, TRUE);
  check_test_memory_usage();

  clearenv();
  show_environment(FALSE, FALSE, FALSE);
  check_test_memory_usage();
#endif

  /* Top of test loop */
  
#if CONFIG_EXAMPLES_OSTEST_LOOPS > 1
  for (i = 0; i < CONFIG_EXAMPLES_OSTEST_LOOPS; i++)
#elif CONFIG_EXAMPLES_OSTEST_LOOPS == 0
  for (;;)
#endif
    {
#if CONFIG_NFILE_DESCRIPTORS > 0
      /* Checkout /dev/null */

      printf("\nuser_main: /dev/null test\n");
      dev_null();
      check_test_memory_usage();
#endif

#ifndef CONFIG_DISABLE_PTHREAD
      /* Verify pthreads and pthread mutex */

      printf("\nuser_main: mutex test\n");
      mutex_test();
      check_test_memory_usage();
#endif

#if !defined(CONFIG_DISABLE_PTHREAD) && defined(CONFIG_MUTEX_TYPES)
      /* Verify recursive mutexes */

      printf("\nuser_main: recursive mutex test\n");
      recursive_mutex_test();
      check_test_memory_usage();
#endif

#ifndef CONFIG_DISABLE_PTHREAD
      /* Verify pthread cancellation */

      printf("\nuser_main: cancel test\n");
      cancel_test();
      check_test_memory_usage();
#endif

#ifndef CONFIG_DISABLE_PTHREAD
      /* Verify pthreads and semaphores */

      printf("\nuser_main: semaphore test\n");
      sem_test();
      check_test_memory_usage();
#endif

#ifndef CONFIG_DISABLE_PTHREAD
    /* Verify pthreads and condition variables */

      printf("\nuser_main: condition variable test\n");
      cond_test();
      check_test_memory_usage();
#endif

#if !defined(CONFIG_DISABLE_SIGNALS) && !defined(CONFIG_DISABLE_PTHREAD) && !defined(CONFIG_DISABLE_CLOCK)
      /* Verify pthreads and condition variable timed waits */

      printf("\nuser_main: timed wait test\n");
      timedwait_test();
      check_test_memory_usage();
#endif

#if !defined(CONFIG_DISABLE_MQUEUE) && !defined(CONFIG_DISABLE_PTHREAD)
      /* Verify pthreads and message queues */

      printf("\nuser_main: message queue test\n");
      mqueue_test();
      check_test_memory_usage();
#endif

#if !defined(CONFIG_DISABLE_MQUEUE) && !defined(CONFIG_DISABLE_PTHREAD) && !defined(CONFIG_DISABLE_CLOCK)
      /* Verify pthreads and message queues */

      printf("\nuser_main: timed message queue test\n");
      timedmqueue_test();
      check_test_memory_usage();
#endif

#ifndef CONFIG_DISABLE_SIGNALS
      /* Verify signal handlers */

      printf("\nuser_main: signal handler test\n");
      sighand_test();
      check_test_memory_usage();
#endif

#if !defined(CONFIG_DISABLE_POSIX_TIMERS) && !defined(CONFIG_DISABLE_SIGNALS)
      /* Verify posix timers */

      printf("\nuser_main: POSIX timer test\n");
      timer_test();
      check_test_memory_usage();
#endif

#if !defined(CONFIG_DISABLE_PTHREAD) && CONFIG_RR_INTERVAL > 0
      /* Verify round robin scheduling */

      printf("\nuser_main: round-robin scheduler test\n");
      rr_test();
      check_test_memory_usage();
#endif

#ifndef CONFIG_DISABLE_PTHREAD
      /* Verify pthread barriers */

      printf("\nuser_main: barrier test\n");
      barrier_test();
      check_test_memory_usage();
#endif

      /* Compare memory usage at time user_start started until
       * user_main exits.  These should not be identical, but should
       * be similar enough that we can detect any serious OS memory
       * leaks.
       */

#ifndef CONFIG_DISABLE_SIGNALS
      usleep(500*1000);

#ifdef CONFIG_CAN_PASS_STRUCTS
      g_mmafter = mallinfo();
#else
      (void)mallinfo(&g_mmafter);
#endif

      printf("\nFinal memory usage:\n");
      show_memory_usage(&g_mmbefore, &g_mmafter);
#endif
    }
  printf("user_main: Exitting\n");
  return 0;
}

/****************************************************************************
 * Name: stdio_test
 ****************************************************************************/

static void stdio_test(void)
{
  /* Verify that we can communicate */

#if CONFIG_NFILE_DESCRIPTORS > 0
  write(1, write_data1, sizeof(write_data1)-1);
#endif
  printf("stdio_test: Standard I/O Check: printf\n");

#if CONFIG_NFILE_DESCRIPTORS > 1
  write(2, write_data2, sizeof(write_data2)-1);
#endif
#if CONFIG_NFILE_STREAMS > 0
  fprintf(stderr, "stdio_test: Standard I/O Check: fprintf to stderr\n");
#endif
}

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * user_initialize
 ****************************************************************************/

void user_initialize(void)
{
  /* stub */
}

/****************************************************************************
 * user_start
 ****************************************************************************/

int user_start(int argc, char *argv[])
{
  int result;

  /* Verify that stdio works first */

  stdio_test();

#ifdef SDCC
  /* I am not yet certain why SDCC does not like the following initilizers.
   * It involves some issues with 2- vs 3-byte pointer types.
   */

  g_argv[0] = arg1;
  g_argv[1] = arg2;
  g_argv[2] = arg3;
  g_argv[3] = arg4;
  g_argv[4] = NULL;
#endif

  /* Set up some environment variables */

#ifndef CONFIG_DISABLE_ENVIRON
  printf("user_start: putenv(%s)\n", g_putenv_value);
  putenv(g_putenv_value);                   /* Varaible1=BadValue3 */
  printf("user_start: setenv(%s, %s, TRUE)\n", g_var1_name, g_var1_value);
  setenv(g_var1_name, g_var1_value, TRUE);  /* Variable1=GoodValue1 */

  printf("user_start: setenv(%s, %s, FALSE)\n", g_var2_name, g_bad_value1);
  setenv(g_var2_name, g_bad_value1, FALSE); /* Variable2=BadValue1 */
  printf("user_start: setenv(%s, %s, TRUE)\n", g_var2_name, g_var2_value);
  setenv(g_var2_name, g_var2_value, TRUE);  /* Variable2=GoodValue2 */

  printf("user_start: setenv(%s, %s, FALSE)\n", g_var3_name, g_var3_name);
  setenv(g_var3_name, g_var3_value, FALSE); /* Variable3=GoodValue3 */
  printf("user_start: setenv(%s, %s, FALSE)\n", g_var3_name, g_var3_name);
  setenv(g_var3_name, g_bad_value2, FALSE); /* Variable3=GoodValue3 */
  show_environment(TRUE, TRUE, TRUE);
#endif

  /* Verify that we can spawn a new task */

#ifndef CONFIG_CUSTOM_STACK
  result = task_create("ostest", PRIORITY, STACKSIZE, user_main, g_argv);
#else
  result = task_create("ostest", PRIORITY, user_main, g_argv);
#endif
  if (result == ERROR)
    {
      printf("user_start: ERROR Failed to start user_main\n");
    }
  else
    {
      printf("user_start: Started user_main at PID=%d\n", result);
    }

  return 0;
}