all-out.txt

Thread-9jnxc
looping.rb:17:in `block (2 levels) in <main>'
    \_ looping.rb:15:in `each'
    \_ looping.rb:15:in `block in <main>'
    \_ looping.rb:22:in `call'
    \_ looping.rb:22:in `condition'
    \_ looping.rb:26:in `looping'
    \_ looping.rb:31:in `<main>'

all-threads.rb

trap 'INT' do
  Thread.list.each do |thread|
    STDERR.puts "Thread-#{thread.object_id.to_s(36)}"
    STDERR.puts thread.backtrace.join("\n    \\_ ")
  end
end

combined.rb

trap 'INT' do
  if RUBY_VERSION =~ /^1\.8\./
    STDERR.puts "Current thread: #{Thread.inspect}"
    STDERR.puts caller.join("\n    \\_ ")  
  else
    Thread.list.each do |thread|
      STDERR.puts "Thread-#{thread.object_id.to_s(36)}"
      STDERR.puts thread.backtrace.join("\n    \\_ ")
    end
  end
end

curr-thread.rb

trap 'INT' do
  STDERR.puts "Current thread: #{Thread.inspect}"
  STDERR.puts caller.join("\n    \\_ ")  
end

exiting.rb

interrupted = false
trap 'INT' do
  exit Signal.list["INT"] if interrupted
  interrupted = true
  if RUBY_VERSION =~ /^1\.8\./
    STDERR.puts "Current thread: #{Thread.inspect}"
    STDERR.puts caller.join("\n    \\_ ")  
  else
    Thread.list.each do |thread|
      STDERR.puts "Thread-#{thread.object_id.to_s(36)}"
      STDERR.puts thread.backtrace.join("\n    \\_ ")
    end
  end
  puts "Press Ctrl+C again to exit..."
  sleep 1
  interrupted = false
end

looping.rb

def condition
  true
end

def looping
  while condition
    # do something
  end
end

looping