一种基于Select函数的嵌入式网络通信信息转发机制设计

Design of information Forwarding Mechanism in Embedded Network Communication Based on Select Function

为了解决在嵌入式网络多对多通信中出现网络拥塞造成网络性能指标下降、引起网络带宽资源浪费的问题,基于Select函数,提出一种单一进程的多目标睡眠等待的信息转发机制方法,当睡眠进程等待的几个目标通道中的任何一个有输入数据时,相应的设备驱动程序把睡眠中的进程唤醒。这样,既达到了进程与多个数据通道进行通信的目的,又避免使用报文队列增加资源消耗的弊端,使信息转发保持了较高的效率。该机制已经在Linux平台上实现并通过测试。

In order to solve the problem of waste of network bandwidth resource caused by network congestion in embedded network multi point communication, put forward a kind of single process multi objective sleep method of information forward- ing based on Select function. When there is data input in any data channel relative to the process, the corresponding device driv- ers will wake up the process. So, it can achieve the purpose of communicate with multiple data channels, but also to avoid the use of message queue witch increases resource consumption, making the information forwarding to maintain higher efficiency. This mechanism has been implemented on the Linux platform and tested.