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

Backport PR : Fixed minor typo causing AttributeError to be thrown....

Backport PR : Fixed minor typo causing AttributeError to be thrown. I'm not sure how I caused the error to be thrown and couldn't reproduce it with the same call again, nevertheless I think the fix is correct. ```python In [21]: rc.shutdown(hub=True) Traceback (most recent call last): File "<ipython-input-21-977a05a15f31>", line 1, in <module> rc.shutdown(hub=True) File "<string>", line 2, in shutdown File "c:\dev\code\ipython\IPython\parallel\client\client.py", line 69, in spin_first self.spin() File "c:\dev\code\ipython\IPython\parallel\client\client.py", line 1005, in spin self._flush_notifications() File "c:\dev\code\ipython\IPython\parallel\client\client.py", line 800, in _flush_notifications raise Exception("Unhandled message type: %s"%msg.msg_type) AttributeError: 'dict' object has no attribute 'msg_type' ```

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      """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)

              except OSError, e:

                  if e.errno != errno.EBADF:

                      raise

          os.close(null)

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				"""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)
				except OSError, e:
				if e.errno != errno.EBADF:
				raise
				os.close(null)