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

Eliminate main window logic from MagicHelper....

Eliminate main window logic from MagicHelper. The only remaining logic in MagicHelper was calling kernel upon update. Moved the call to main window using new special signal 'readyForUpdate' Upon receival of this signal main window will query the kernel and call MagicHelper.populate_magic_helper()

Matthias BUSSONNIER - - Load All Authors

File last commit:

r7787:28b538a9


                r16484:e0bd1377

Download file

             daemonize.py
        
                    26 lines
            
             | 833 B
            
                | text/x-python
            
             |
                PythonLexer
            
             / IPython / utils / daemonize.py
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      """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 as e:

                  if e.errno != errno.EBADF:

                      raise

          os.close(null)

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				"""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 as e:
				if e.errno != errno.EBADF:
				raise
				os.close(null)