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add test notebook and script for #1260 (GIL-related heartbeat failures)...
add test notebook and script for #1260 (GIL-related heartbeat failures) per #1127

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hb_gil.py
31 lines | 575 B | text/x-python | PythonLexer
"""
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)