系统V消息队列-定时接收 [英] System V Message Queue - Timed receive

问题描述

Im使用System V消息队列，它不具有定时接收"功能，例如POSIX MQ. 但是现在我需要它(该定时接收功能.).

Im using System V Message Queue, which does not have a "timed receive" function, like POSIX MQ. But now i need it (this timed receive func.).

一个人会问:那为什么不使用POSIX而不是Sys V?".因为在我的基准测试中，SysV MQ比POSIX MQ快20％.

One can ask: "so why dont you use POSIX instead of Sys V?". Because in my benchmarks SysV MQ was +- 20% faster than POSIX MQ.

现在是问题. 如何为Sys V MQ伪造定时接收"?

Now the question. How to fake a "timed receive" for Sys V MQ?

我编写了一段代码，用usleep循环对msgrcv和IPC_NOWAIT进行了测试. 我认为它很丑陋，所以我需要创意写一个漂亮的=]

I wrote a piece of code that does it testing msgrcv with IPC_NOWAIT in a loop with usleep. I think its ugly, so i need ideas to write a beautiful one =]

推荐答案

本文显示了您注意到的相同内容，需要对其进行循环: http://linuxgazette.net/issue92/hawk.html

This article shows the same thing you noticed, that you need to loop on it: http://linuxgazette.net/issue92/hawk.html

然后继续提出内核修改以解决此问题. YMMV，但我怀疑您将无法仅仅为了做到这一点而对您的内核进行黑客攻击. :)

Then it goes on to propose a kernel modification to work around this. YMMV, but I suspect you won't be in a position to hack your kernel just to do this. :)

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