Mysql源码学习笔记——偷窥线程(4)

  pthread_mutex_unlock(&THR_LOCK_thread);

  if (hThread == (HANDLE) -1)

  {

    int error=errno;

    DBUG_PRINT("error",

           ("Can't create thread to handle request (error %d)",error));

    DBUG_RETURN(error ? error : -1);

  }

  VOID(SetThreadPriority(hThread, attr->priority)) ;

  DBUG_RETURN(0);

}

关键的代码是下面三句：

              map->func=func;

map->param=param;

_beginthread((void( __cdecl *)(void *)) pthread_start,

                   attr->dwStackSize ? attr->dwStackSize :

                   65535, (void*) map);