upstream/ipython Files · IPython/utils/daemonize.py

Fix inconsistencies in parallel direct interface doc...

Fix inconsistencies in parallel direct interface doc Running through the entire page would produce errors, as different variable names were used, or, in the case of the %px a=b example, not throw an exception because a and b actually were defined in an earlier example. The following fixes allow one to follow through the entire page and experience the expected behaviors

Matthias BUSSONNIER - - Load All Authors

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r7787:28b538a9


                r14631:b45c402d

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             daemonize.py
        
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             / IPython / utils / daemonize.py
          
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        MinRK
    
scrub twisted/deferred references from launchers...

              r4019
            
      """daemonize function from twisted.scripts._twistd_unix."""

      #-----------------------------------------------------------------------------

      # Copyright (c) Twisted Matrix Laboratories.

      # See Twisted's LICENSE for details.

      # http://twistedmatrix.com/

      #-----------------------------------------------------------------------------

      import os, errno

      def daemonize():

          # See http://www.erlenstar.demon.co.uk/unix/faq_toc.html#TOC16

          if os.fork():   # launch child and...

              os._exit(0) # kill off parent

          os.setsid()

          if os.fork():   # launch child and...

              os._exit(0) # kill off parent again.

          null = os.open('/dev/null', os.O_RDWR)

          for i in range(3):

              try:

                  os.dup2(null, i)

        Matthias BUSSONNIER
    
conform to pep 3110...

              r7787
            
              except OSError as e:

        MinRK
    
scrub twisted/deferred references from launchers...

              r4019
            
                  if e.errno != errno.EBADF:

                      raise

          os.close(null)

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MinRK scrub twisted/deferred references from launchers...	r4019	"""daemonize function from twisted.scripts._twistd_unix."""

		#-----------------------------------------------------------------------------
		# Copyright (c) Twisted Matrix Laboratories.
		# See Twisted's LICENSE for details.
		# http://twistedmatrix.com/
		#-----------------------------------------------------------------------------

		import os, errno

		def daemonize():
		# See http://www.erlenstar.demon.co.uk/unix/faq_toc.html#TOC16
		if os.fork(): # launch child and...
		os._exit(0) # kill off parent
		os.setsid()
		if os.fork(): # launch child and...
		os._exit(0) # kill off parent again.
		null = os.open('/dev/null', os.O_RDWR)
		for i in range(3):
		try:
		os.dup2(null, i)
Matthias BUSSONNIER conform to pep 3110...	r7787	except OSError as e:
MinRK scrub twisted/deferred references from launchers...	r4019	if e.errno != errno.EBADF:
		raise
		os.close(null)