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

Update deepreload to use a rewritten knee.py. Fixes dreload(numpy)....

Update deepreload to use a rewritten knee.py. Fixes dreload(numpy). knee.py, a Python re-implementation of hierarchical module import was removed from the standard library because it no longer functioned properly. deepreload.py is little more than a hacked version of knee.py which overrides __builtin__.__import__ to ensure that each module is re-imported once (before just referring to sys.modules as usual). In addition, `os.path` was added to the default excluded modules, since somehow it has an entry in sys.modules without `os' being a package.

Thomas Kluyver - - Load All Authors

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      """

      Run this script in the qtconsole with one of:

          %loadpy 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)

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

				%loadpy 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)