Example application to inspect how heroku handles parent-child process signaling

.ruby-version

2.2.3

Gemfile

ruby '2.2.3'

Gemfile.lock

GEM
  specs:

PLATFORMS
  ruby

DEPENDENCIES

RUBY VERSION
   ruby 2.2.3p173

BUNDLED WITH
   1.13.7

Procfile

web: bundle exec ruby worker.rb

worker.rb

$stdout.sync = true

puts "Parent PID: #{Process.pid}"

trap('TERM') do
	puts "parent term"
end

fork do
 trap('TERM') do
 	puts "child term"
 end

 puts "child PID: #{Process.pid}"

 loop { puts "child loop"; sleep 1 }
end

loop { puts "parent loop"; sleep 1 }