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IPC与消息传递

[英]IPC with Message Passing

原文 2008-11-04 11:18:04 0 2 c/ operating-system

I'm looking for suggestions on possible IPC mechanisms that I can implement in my self-made OS for an AVR32 board. 我正在寻找有关可能的IPC机制的建议，我可以在我自制的AVR32板操作系统中实现。

My current choice is implementing the massage passing mechanism described in the books written by Tanenbaum. 我目前的选择是实施Tanenbaum所着书中描述的按摩传递机制。

Is this a good choice? 这是一个不错的选择吗？ Are there easier way to implement IPC? 是否有更简单的方法来实施IPC？

Thanks 谢谢

2 个解决方案

My suggestion is to review the message passing primitives that QNX RTOS (www.qnx.com) supports before making any decisions. 我的建议是在做出任何决定之前，先查看QNX RTOS（www.qnx.com）支持的消息传递原语。 I spent several years programming a complex multi-process system in that environment, and it stands out as the best message-based O/SI have ever encountered. 我花了几年时间在该环境中编写复杂的多进程系统，并且它是最好的基于消息的O / SI所遇到的。

Some specific points that spring to mind (it's been a while now): 想到的一些具体要点（现在已经有一段时间了）：

Message data copied between process memory space by the kernel so that a bug in one process cannot affect another. 内核在进程内存空间之间复制消息数据，以便一个进程中的错误不会影响另一个进程。
Ability to send and block for a reply. 能够发送和阻止回复。
Ability to drop a message on a queue and move on immediately. 能够将消息放入队列并立即继续。
Ability to send a message an block indefinitely until the receiver responds; 能够无限期地发送一个消息，直到接收者响应; the receiver may receive and process other messages in the meantime - this is way more valuable than you at first think it will be. 接收者可以在此期间接收和处理其他消息 - 这比您最初认为的更有价值。