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import sys
__all__ = ["register_after_fork"]
if sys.platform == "win32":
import multiprocessing.util as _util
def _register(func):
def wrapper(arg):
func()
_util.register_after_fork(_register, wrapper)
else:
import os
def _register(func):
os.register_at_fork(after_in_child=func)
def register_after_fork(func):
"""Register a callable to be executed in the child process after a fork.
Note:
In python < 3.7 this will only work with processes created using the
``multiprocessing`` module. In python >= 3.7 it also works with
``os.fork()``.
Args:
func (function): Function taking no arguments to be called in the child after fork
"""
_register(func)
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