嵌入式实时操作系统中零拷贝消息队列的设计

针对嵌入式实时操作系统中消息队列的普遍实现机制的若干问题,提出了一种对其改进的无内存拷贝的消息队列的实现方法,详细描述了消息队列的设计原理,分析了其中的关键技术。最后对两种消息队列的消息发送速度和内存消耗进行了对比测试。

Message Queue of Zero-copy in RTOS

In allusion to a lot of problems caused by the mechanism of message queue in common RTOS, this paper presents a revised message queue of zero-copy. The design principal of the zero-copy message queue is described deliberately, and the critical arithmetic is also provided. Finally the difference of the dispatch message time and memory consumption between the VxWorks message queue and zero-copy message queue are compared and tested.