From: KOSAKI Motohiro <kosaki.motohiro@...>
Date: 2013-02-23T17:17:58+09:00
Subject: [ruby-core:52734] Re: [ruby-trunk - Bug #7917][Open] Can't write to a Logger in a signal handler

On Sat, Feb 23, 2013 at 3:06 AM, Eric Wong <normalperson@yhbt.net> wrote:
> "mperham (Mike Perham)" <mperham@gmail.com> wrote:
>> trap 'INT' do
>>   LOG.info "Hello"
>> end
>
> An ugly workaround I use is to spawn a thread inside trap:
>
> trap 'INT' do
>   Thread.new do
>     LOG.info "Hello"
>   end
> end

Um. this is safe.

btw, following is unsafe when 1.9.x. because trap safe th.join is a
new feature of 2.0.

trap 'INT' do
  t = Thread.new do
    LOG.info "Hello"
  end
  t.join
end

see http://bugs.ruby-lang.org/issues/6416

Hm.
Should we backport this fix to 1.9.3 too?