C语言 如何向C中的进程发送信号？
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How to send a signal to a process in C?
提问by Samantha Catania
I need to send a signal to a process and when the process receives this signal it does some things, how is this best achieved in C?
我需要向一个进程发送一个信号，当该进程收到这个信号时它会做一些事情，这在 C 中如何最好地实现？
回答by R.. GitHub STOP HELPING ICE
The way to send a signal to a process is kill(pid, signal);However, you should be aware that signals are not a robust means of inter-process communication except for parent-to-direct-child messages due to inherent race conditions. Pipes, files, directories, named semaphores, sockets, shared memory, etc. all provide greatly superior approaches to inter-process communication.
向进程发送信号的方式是kill(pid, signal);但是，您应该意识到信号并不是一种可靠的进程间通信方式，除了由于固有的竞争条件而导致的父级到直接子级的消息。管道、文件、目录、命名信号量、套接字、共享内存等都为进程间通信提供了非常优越的方法。
回答by wildplasser
If you happen to be on one of the Unix variants, the following man pages will help:
如果您碰巧使用其中一种 Unix 变体，以下手册页将有所帮助：
man 2 kill
man 2 signal
man 2 sigvec
