From: "h.shirosaki (Hiroshi Shirosaki)" <h.shirosaki@...>
Date: 2012-03-19T23:39:14+09:00
Subject: [ruby-core:43472] [ruby-trunk - Bug #6131] Ctrl-C handler do not work from exec process (Windows)


Issue #6131 has been updated by h.shirosaki (Hiroshi Shirosaki).


How about removing CREATE_NEW_PROCESS_GROUP flag by default and providing a way to specify CREATE_NEW_PROCESS_GROUP flag by spawn methods's arguments?
Ruby user can specify CREATE_NEW_PROCESS_GROUP flag if it's needed.

spawn method has `options` parameter hash.

spawn(command, options={}) -> Integer
spawn(env, command, options={}) -> Integer
spawn(env, program, *args, options={}) -> Integer

Specify options:
{ :creationflags => Process::CREATE_NEW_PROCESS_GROUP }

Python module does similar things.
http://docs.python.org/library/subprocess.html#subprocess.CREATE_NEW_PROCESS_GROUP
----------------------------------------
Bug #6131: Ctrl-C handler do not work from exec process (Windows)
https://bugs.ruby-lang.org/issues/6131#change-24944

Author: luislavena (Luis Lavena)
Status: Assigned
Priority: Normal
Assignee: h.shirosaki (Hiroshi Shirosaki)
Category: core
Target version: 1.9.3
ruby -v: ruby 1.9.3-p155 (2012-03-03) [i386-mingw32]


Hello,

Originally reported to TheCodeShop group: https://groups.google.com/forum/?fromgroups#!topic/thecodeshop/ZI9FY-RKYgs

The usage of "rails server" uses `exec` to spawn another process to run a server, and that process do not handle Ctrl-C.

Script to recreate this issue:

https://gist.github.com/2009356

=begin a.rb
trap(:INT) do
  puts "Hit Ctrl+C in a.rb"
end

exec "ruby b.rb"
=end

=begin b.rb
trap(:INT) do
puts "Hit Ctrl+C in b.rb"
exit(false)
end

sleep
=end

Invoking b directly from command line works, but from a.rb it fails to respond to Ctrl-C



-- 
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