实时信号的意义？

大佬教程收集整理的这篇文章主要介绍了实时信号的意义？，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

标准信号，只允许一个信号可以排队。 实时信号允许多个信号可以排队。 这是唯一的区别吗？ 或者，我们还有其他的优势吗？@H_419_1@

谢谢。@H_419_1@

在Linux中使用Signal发送信息@H_419_1@

如何将信号处理程序添加到用Py3k / Python编写的sHell中？@H_419_1@

Erlang Linux信号处理@H_419_1@

SIGSTOP不能在c程序中工作@H_419_1@

线程间通信。 如何发送信号到另一个线程@H_419_1@

根据signal(7)页 ，有几个区别：@H_419_1@

Real-time signals are disTinguished by the following: 1. Multiple instances of real-time signals can be queued. By con- trast,if multiple instances of a standard signal are delivered while that signal is currently blocked,then only one instance is queued. 2. If the signal is sent using sigqueue(2),an accompanying value (either an Integer or a pointer) can be sent with the signal. If the receiving process establishes a handler for this signal using the SA_SIGINFO flag to sigaction(2) then it can obtain this data via the si_value field of the siginfo_t structure passed as the second argument to the handler. Furthermore,the si_pid and si_uid fields of this structure can be used to obtain the PID and real user ID of the process sending the signal. 3. Real-time signals are delivered in a guaranteed order. Multiple real-time signals of the same type are delivered in the order they were sent. if Different real-time signals are sent to a process,they are delivered starTing with the loWest-numbered signal. (Ie,low-numbered signals have highest priority.) If both standard and real-time signals are pending for a process,POSIX leaves it unspecified which is delivered first. Linux,like many other implementations,gives priority to standard signals in this case.@H_419_1@

例如， 这里总结了不同之处。@H_419_1@

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