dbg.c

用于传感器网络的节点操作系统 TinyOS 结构设计非常有意思

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/*
 *
 * Authors:		Phil Levis (derived from work by Mike Castelle)
 *
 *
 */

/*
 *   FILE: dbg.c
 * AUTHOR: pal
 *  DESCR: Variables and initialization of DBG routines.
 */

#if defined(PLATFORM_PC) && !defined(NDEBUG)

static TOS_dbg_mode_names dbg_nametab[] = {
  DBG_NAMETAB
};

void dbg_add_mode(const char *name) {
  int cancel;
  TOS_dbg_mode_names *mode;
  
  if (*name == '-') {
    cancel = 1;
    name++;
  }
  else
    cancel = 0;
  
  for (mode = dbg_nametab; mode->d_name != NULL; mode++)
    if (strcmp(name, mode->d_name) == 0)
      break;
  if (mode->d_name == NULL) {
    fprintf(stderr, "Warning: Unknown debug option: "
	    "\"%s\"\n", name);
    return;
  }
  
  if (cancel)
    dbg_modes &= ~mode->d_mode;
  else
    dbg_modes |= mode->d_mode;
}

void dbg_add_modes(const char *modes) {
  char env[256];
  char *name;
  
  strncpy(env, modes, sizeof(env));
  for (name = strtok(env,","); name; name = strtok(NULL, ","))
    dbg_add_mode(name);
}

void dbg_init(void) {
  const char *dbg_env;

  dbg_modes = DBG_NONE;
  
  dbg_env = getenv(DBG_ENV);
  if (!dbg_env) {
    dbg_modes = DBG_DEFAULT;
    return;
  }
  
  dbg_add_modes(dbg_env);
}

void dbg_help(void) {
  int i = 0;
  printf("Known dbg modes: ");

  while (dbg_nametab[i].d_name != NULL) {
    printf("%s", dbg_nametab[i].d_name);
    if (dbg_nametab[i + 1].d_name != NULL) {
      printf(", ");
    }
    i++;
  }

  printf("\n");
}

#endif //PLATFORM_PC