在Windows上的Ruby中杀死进程和子进程 [英] Kill process and sub-processes in Ruby on Windows

问题描述

当前，我正在一个命令提示符下执行此操作

Currently I'm doing this in one command prompt

require 'win32/process'
p = Process.spawn("C:/ruby193/bin/bundle exec rails s")
puts p
Process.waitpid(p)

，然后在另一个

require 'win32/process'
Process.kill(1,<p>)

问题是我产生的进程(在本例中为Rails服务器)产生了一系列子进程. kill命令不会杀死它们，只会使它们成为没有父母的孤儿.

The problem is that the process I spawn (the Rails server in this case) spawns a chain of sub-processes. The kill command doesn't kill them, it just leaves them orphaned with no parent.

有什么想法可以杀死整个及其所有子进程?

Any ideas how can I kill the whole spawned process and all its children?

推荐答案

我最终以以下方式解决了这个问题

I eventually solved this in the following manner

首先我安装了sys-proctable gem

First I installed the sys-proctable gem

gem install 'sys-proctable'

然后将原始发布的代码用于spawn进程，然后使用以下代码将其杀死(为简便起见，省略了错误处理)

then used the originally posted code to spawn the process, and the following to kill it (error handling omitted for brevity)

require 'win32/process'
require 'sys/proctable'
include Win32
include Sys

  to_kill = .. // PID of spawned process
  ProcTable.ps do |proc|
    to_kill << proc.pid if to_kill.include?(proc.ppid)
  end

  Process.kill(9, *to_kill)
  to_kill.each do |pid|
    Process.waitpid(pid) rescue nil
  end

您当然可以将kill 9更改为稍微有点进攻的东西，但这是解决方案的要旨.

You could change the kill 9 to something a little less offensive of course, but this is the gist of the solution.

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