Function code_state

dbug/dbug.c:368–404

static rw_lock_t THR_LOCK_init_settings;

static CODE_STATE *code_state(void)
{
  CODE_STATE *cs, **cs_ptr;

  /*
    _dbug_on_ is reset if we don't plan to use any debug commands at all and
    we want to run on maximum speed
   */
  if (!_dbug_on_)
    return 0;

  if (!init_done)
  {
    init_done=TRUE;
    pthread_mutex_init(&THR_LOCK_dbug, NULL);
    pthread_mutex_init(&THR_LOCK_gcov, NULL);
    my_rwlock_init(&THR_LOCK_init_settings, NULL);
    memset(&init_settings, 0, sizeof(init_settings));
    init_settings.out_file=stderr;
    init_settings.flags=OPEN_APPEND;
  }

  if (!(cs_ptr= (CODE_STATE**) my_thread_var_dbug()))
    return 0;                                   /* Thread not initialised */
  if (!(cs= *cs_ptr))
  {
    cs=(CODE_STATE*) DbugMalloc(sizeof(*cs));
    memset(cs, 0, sizeof(*cs));
    cs->process= db_process ? db_process : "dbug";
    cs->func="?func";
    cs->file="?file";
    cs->stack=&init_settings;
    cs->m_read_lock_count= 0;
    *cs_ptr= cs;
  }
  return cs;
}

/**
  Lock the stack debugging settings.