upstream/ipython Files · docs/examples/tests/heartbeat/hb_gil.py

Merge pull request from dopplershift/pylab-switch...

Merge pull request from dopplershift/pylab-switch Enable switching %pylab mode between inline and a single gui mode in a single notebook. With this merge, `%pylab` can be called interactively to toggle inline/GUI (matplotlib floating windows) mode. After initializing `%pylab inline`, now one can call `%pylab` without arguments to activate the default GUI or ask for a specific one as usual. IPython will detect if a different GUI is requested if one was already activated and will refuse to do so (to prevent multiple event loops from running concurrently, which often leads to problems).

Matthias BUSSONNIER - - Load All Authors

File last commit:

r6765:24cb7424


                r8027:6dac6929

Download file

             hb_gil.py
        
                    31 lines
            
             | 574 B
            
                | text/x-python
            
             |
                PythonLexer
            
             / docs / examples / tests / heartbeat / hb_gil.py
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      """

      Run this script in the qtconsole with one of:

          %load hb_gil.py

      or

          %run hb_gil.py

      Holding the GIL for too long could disrupt the heartbeat.

      See Issue #1260: https://github.com/ipython/ipython/issues/1260

      """

      import sys

      import time

      from cython import inline

      def gilsleep(t):

          """gil-holding sleep with cython.inline"""

          code = '\n'.join([

              'from posix cimport unistd',

              'unistd.sleep(t)',

          ])

          while True:

              inline(code, quiet=True, t=t)

              print(time.time())

              sys.stdout.flush() # this is important

      gilsleep(5)

	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

				"""
				Run this script in the qtconsole with one of:

				%load hb_gil.py

				or
				%run hb_gil.py

				Holding the GIL for too long could disrupt the heartbeat.

				See Issue #1260: https://github.com/ipython/ipython/issues/1260

				"""

				import sys
				import time

				from cython import inline

				def gilsleep(t):
				"""gil-holding sleep with cython.inline"""
				code = '\n'.join([
				'from posix cimport unistd',
				'unistd.sleep(t)',
				])
				while True:
				inline(code, quiet=True, t=t)
				print(time.time())
				sys.stdout.flush() # this is important

				gilsleep(5)