Class: ChildProcess::Unix::Process

Inherits:
AbstractProcess show all
Defined in:
lib/childprocess/unix/process.rb

Constant Summary

Constants inherited from AbstractProcess

AbstractProcess::POLL_INTERVAL

Instance Attribute Summary collapse

Attributes inherited from AbstractProcess

#detach, #duplex, #environment, #exit_code

Instance Method Summary collapse

Methods inherited from AbstractProcess

#alive?, #crashed?, #initialize, #poll_for_exit, #start

Constructor Details

This class inherits a constructor from ChildProcess::AbstractProcess

Instance Attribute Details

#pid ⇒ Fixnum (readonly)

Returns the pid of the process after it has started.

Returns:

  • (Fixnum) —

    the pid of the process after it has started



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# File 'lib/childprocess/unix/process.rb', line 7

def pid
  @pid
end

Instance Method Details

#exited? ⇒ Boolean

Did the process exit?

Returns:

  • (Boolean) 


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# File 'lib/childprocess/unix/process.rb', line 37

def exited?
  return true if @exit_code

  assert_started
  pid, status = ::Process.waitpid2(@pid, ::Process::WNOHANG)

  log(:pid => pid, :status => status)

  if pid
    @exit_code = status.exitstatus || status.termsig
  end

  !!pid
end

#io ⇒ Object 



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# File 'lib/childprocess/unix/process.rb', line 9

def io
  @io ||= Unix::IO.new
end

#stop(timeout = 3) ⇒ Object 



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# File 'lib/childprocess/unix/process.rb', line 13

def stop(timeout = 3)
  assert_started
  send_term

  begin
    return poll_for_exit(timeout)
  rescue TimeoutError
    # try next
  end

  send_kill
  wait
rescue Errno::ECHILD, Errno::ESRCH
  # handle race condition where process dies between timeout
  # and send_kill
  true
end