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Don't deadlock on a reentrant call.

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Raymond Hettinger 2013-03-01 03:47:57 -08:00
parent faaba59977
commit fd54117a68
1 changed files with 3 additions and 3 deletions
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6
Lib/functools.py
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@ -14,9 +14,9 @@ __all__ = ['update_wrapper', 'wraps', 'WRAPPER_ASSIGNMENTS', 'WRAPPER_UPDATES',
from _functools import partial, reduce
from collections import namedtuple
try:
from _thread import allocate_lock as Lock
from _thread import RLock
except:
from _dummy_thread import allocate_lock as Lock
from dummy_threading import RLock
################################################################################
@ -207,7 +207,7 @@ def lru_cache(maxsize=128, typed=False):
hits = misses = currsize = 0
full = False
cache_get = cache.get # bound method to lookup a key or return None
lock = Lock() # because linkedlist updates aren't threadsafe
lock = RLock() # because linkedlist updates aren't threadsafe
root = [] # root of the circular doubly linked list
root[:] = [root, root, None, None] # initialize by pointing to self