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bpo-36867: Create the resource_tracker before launching SharedMemoryManagers (GH-13276)

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Pierre Glaser 2019-05-13 21:15:32 +02:00 • committed by Antoine Pitrou
parent be6939fb02
commit b1dfcad6f0
3 changed files with 54 additions and 14 deletions
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9
Lib/multiprocessing/managers.py
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@ -21,6 +21,7 @@ import signal
import array
import queue
import time
import os
from os import getpid
from traceback import format_exc
@ -1349,6 +1350,14 @@ if HAS_SHMEM:
_Server = SharedMemoryServer
def __init__(self, *args, **kwargs):
if os.name == "posix":
# bpo-36867: Ensure the resource_tracker is running before
# launching the manager process, so that concurrent
# shared_memory manipulation both in the manager and in the
# current process does not create two resource_tracker
# processes.
from . import resource_tracker
resource_tracker.ensure_running()
BaseManager.__init__(self, *args, **kwargs)
util.debug(f"{self.__class__.__name__} created by pid {getpid()}")