这时一个在VxWorks 的VxSim 仿真环境下使用tornado进行编程的。主要解决以下问题：

1.扩展的内存管理机制，最大限度降低外部碎片对系统可靠性的威胁。

2.消息驱动的Task统一驱动模版。统一的消息头结构，全局消息编码，可支持短消息及长消息。

3.无信号量（互斥）支持的临界资源访问方式。

-This is a use tornado in the VxWorks VxSim simulation environment for programming. Mainly address the following issues: 1. Extended memory management mechanism, to minimize the threat of external fragmentation on system reliability. Message-driven Task unified driver template. Unified message header structure, global message encoding, support short message and long message. 3 semaphore (mutex) to support the critical resource access.