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sj26/config-initializers-siginfo.rb

Created September 28, 2016 04:15
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Send a SIGINFO to a rails process, get a backtrace of every thread!
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config-initializers-siginfo.rb
# Send a process a SIGINFO like `kill -INFO <pid>` and it will print the
# current backtrace of all threads.
Signal.trap(29) do
puts "Thread dump:"
Thread.list.each do |thread|
puts thread.inspect.indent(2)
puts thread.backtrace.join("\n").indent(4)
end
end
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