POSIX队列和msg_max [英] POSIX queues and msg_max

问题描述

我在弄一点POSIX队列，遇到了一个问题.创建新队列时，我可以指定例如消息的大小以及队列中可以有多少条消息.我的正常限制是10，如

/proc/sys/fs/mqueue/msg_max

除了

之外，

是否有一种简单的方法可以在程序执行期间进行更改

echo number > /proc/sys/fs/mqueue/msg_max

也许存在一些用于设置此类内容的系统调用.

解决方案

否.

该限制是系统范围的限制；这就是为什么它在/proc/sys中.如果要更改它，则必须使用已经显示的echo命令.

I am toying a bit with POSIX queues and I encountered a problem. When creating a new queue I can specify for example the size of the message and how many messages there can be in the queue. My normal limit is 10 as found in

/proc/sys/fs/mqueue/msg_max

is there an easy way to change it during program execution, apart from

echo number > /proc/sys/fs/mqueue/msg_max

maybe some system call for setting such things exists.

解决方案

No.

That limit is a system-wide limit; that's why it's in /proc/sys. If you want to change it you will have to use the echo command you have already shown.

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