我正在尝试通过 ruby 为集成测试（实际上是规范）设置服务器，但不知道如何控制该过程。
所以，我想做的是：
webrick 不是必需的，但它包含在 ruby 标准库中，因此能够使用它会很棒。
希望有人能提供帮助！
ps。我在 linux 上运行，所以在 windows 上工作不是我的主要优先事项（现在）。
【问题讨论】：
标准方法是使用系统函数 fork（复制当前进程）、exec（将当前进程替换为可执行文件）和 kill（向进程发送信号以终止它）。
例如：
pid = fork do
# this code is run in the child process
# you can do anything here, like changing current directory or reopening STDOUT
exec "/path/to/executable"
end
# this code is run in the parent process
# do your stuffs
# kill it (other signals than TERM may be used, depending on the program you want
# to kill. The signal KILL will always work but the process won't be allowed
# to cleanup anything)
Process.kill "TERM", pid
# you have to wait for its termination, otherwise it will become a zombie process
# (or you can use Process.detach)
Process.wait pid
这应该适用于任何类 Unix 系统。 Windows 以不同的方式创建进程。
【讨论】：
我只需要做类似的事情，这就是我想出的。 @Michael Witrant 的回答让我开始了，但我改变了一些东西，比如使用 Process.spawn 而不是 fork (newer and better)。
# start spawns a process and returns the pid of the process
def start(exe)
puts "Starting #{exe}"
pid = spawn(exe)
# need to detach to avoid daemon processes: http://www.ruby-doc.org/core-2.1.3/Process.html#method-c-detach
Process.detach(pid)
return pid
end
# This will kill off all the programs we started
def killall(pids)
pids.each do |pid|
puts "Killing #{pid}"
# kill it (other signals than TERM may be used, depending on the program you want
# to kill. The signal KILL will always work but the process won't be allowed
# to cleanup anything)
begin
Process.kill "TERM", pid
# you have to wait for its termination, otherwise it will become a zombie process
# (or you can use Process.detach)
Process.wait pid
rescue => ex
puts "ERROR: Couldn't kill #{pid}. #{ex.class}=#{ex.message}"
end
end
end
# Now we can start processes and keep the pids for killing them later
pids = []
pids << start('./someprogram')
# Do whatever you want here, run your tests, etc.
# When you're done, be sure to kill of the processes you spawned
killall(pids)
这就是她写的所有内容，试一试，让我知道它是如何工作的。
【讨论】：
我尝试过 fork，但是当 ActiveRecord 参与这两个进程时，它会出现一些问题。我建议 Spawn 插件 (http://github.com/tra/spawn)。它只分叉，但会处理 ActiveRecord。
【讨论】：