Module: SingleRunningChecker

Defined in:
lib/single_running_checker.rb

Instance Method Summary collapse

Instance Method Details

#task_running?(task_name, only_check = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/single_running_checker.rb', line 3

def task_running?(task_name, only_check=false)
  pid_file = File.join(Rails.root, "tmp", "pids", task_name+".pid")
  if File.exists? pid_file
    pid = File.read(pid_file)
    if pid
      proc = Sys::ProcTable.ps(pid.to_i)
      if proc && proc.cmdline =~ /#{task_name}/
        puts "process with pid #{pid} already runinng"
        return true
      end
    end
  end
  open(pid_file, 'w') { |f| f << Process.pid.to_s } unless only_check
  return false
end