New submission from Jack Zhou:
According to PEP 475, standard library modules should handle EINTR, but this
appears to not be the case for the fcntl module.
Test script:
import fcntl
import signal
import os
def handle_alarm(signum, frame):
print("Received alarm in process {}!".format(os.getpid()))
child = os.fork()
if child:
signal.signal(signal.SIGALRM, handle_alarm)
signal.alarm(1)
with open("foo", "w") as f:
print("Locking in process {}...".format(os.getpid()))
fcntl.flock(f, fcntl.LOCK_EX)
print("Locked in process {}.".format(os.getpid()))
os.waitpid(child, 0)
else:
signal.signal(signal.SIGALRM, handle_alarm)
signal.alarm(1)
with open("foo", "w") as f:
print("Locking in process {}...".format(os.getpid()))
fcntl.flock(f, fcntl.LOCK_EX)
print("Locked in process {}.".format(os.getpid()))
----------
components: IO
messages: 263042
nosy: Jack Zhou
priority: normal
severity: normal
status: open
title: EINTR handling in fcntl
type: behavior
versions: Python 3.5
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue26716>
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