Module: Micron::Util::ThreadDump

Included in:
Micron
Defined in:
lib/micron/util/thread_dump.rb

Instance Method Summary collapse

Instance Method Details

#trap_thread_dump ⇒ Object

Setup thread dump signal



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# File 'lib/micron/util/thread_dump.rb', line 7

def trap_thread_dump
  # print a thread dump on SIGALRM
  # kill -ALRM <pid>
  Signal.trap 'SIGALRM' do
    File.open(File.join(ENV["MICRON_PATH"], "#{$$}.threads.txt"), "w+") do |f|
      f.puts
      f.puts "=== micron thread dump: #{Time.now} ==="
      f.puts
      Thread.list.each do |thread|
        f.puts "Thread-#{thread.object_id}" + (thread[:name] ? ": " + thread[:name] : "")
        f.puts thread.backtrace.join("\n    \\_ ")
        f.puts "-"
        f.puts
      end
      f.puts "=== end micron thread dump ==="
      f.puts
    end
  end
end