问题描述
我想在键入ctrl-C（或发送SIGINT）时进入调试器。我有（我正在运行Ruby 1.9.3）并验证它是否正常工作。我已将其添加到我的安装文件（这是针对Padrino，但是我认为Rails类似）：
I'd like to enter the debugger upon typing ctrl-C (or sending a SIGINT). I have installed the debugger (I'm running Ruby 1.9.3) and verified that it works. I've added this to my setup files (this is for Padrino, but I assume it would be similar for Rails):
# file: config/boot.rb
Padrino.before_load do
trap("SIGINT") { debugger } if Padrino.env == :development
end
...但是输入Ctrl-C不会调用调试器。实际上，如果我用 put 替换看到中断！，输入Ctrl-C不会导致
... but typing Ctrl-C does not invoke the debugger. In fact, if I replace debugger with puts "saw an interrupt!", typing Ctrl-C doesn't cause a print to happen either.
以下来自，我试图从调试器中明确地调用 catch Interrupt ：
Following this suggestion from Mike Dunlavey, I tried explicitly calling catch Interrupt from within the debugger:
$ rdebug `which padrino` console ^Z^Z$HOME/usr/bin/padrino:9 require 'rubygems' (rdb:1) catch Interrupt Catch exception Interrupt. (rdb:1) c => Loading development console (Padrino v.0.10.7) => Loading Application BlueDotAe => Loading Application Admin irb(main):001:0> C-c C-c^C irb(main):001:0>
没有快乐 - 中断没有进入调试器。
No joy -- interrupt did not enter the debugger.
我缺少什么？
推荐答案
如果要在控制台中运行时捕获SIGINT，是：你不能，除非你的猴子补丁IRB。每个使用该控制台的Ruby应用程序（不论是padrino，还是rails或者whatnot）都将最终调用 usr / lib / ruby / 1.9.1 / irb.rb code> IRB.start ，它是：
If you want to trap SIGINT while running in the console, the short answer is: you cannot unless you monkey-patch IRB. Every Ruby app (whether padrino, or rails or whatnot) that uses the console will end up calling usr/lib/ruby/1.9.1/irb.rb, and in IRB.start, it does:
trap("SIGINT") do
irb.signal_handle
end
...进入主循环之前。这将覆盖您可能在启动代码中的任何陷阱（SIGINT）。
... just before entering the main loop. This will override any trap("SIGINT") you might have put in your startup code.
但是，如果要将SIGINT陷入脚本文件中（例如，如果您想要按照所描述的代码），您可以创建一个脚本文件，例如：
But if you want to trap SIGINT in a script file (for example, if you want to profile your code as described by Mike Dunlavey here), you can create a script file such as:
# File: profile_complex_operation.rb
trap("SIGINT") { debugger }
MyApp.complex_operation
然后按如下方式调用：
$ ruby profile_complex_operation.rb
现在，当你打到^ C（或从另一个进程发送SIGINT），它将进入调试器。
Now, when you hit ^C (or send SIGINT from another process), it will enter the debugger.
这篇关于如何配置ruby以在Ctrl-C（SIGINT）上进入调试器？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！