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# -*- coding: utf-8 -*-
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
# Author: Mauro Soria
import threading
from functools import wraps
from time import time
_lock = threading.Lock()
_cache = {}
_cache_lock = threading.Lock()
def cached(timeout=100):
def _cached(func):
@wraps(func)
def with_caching(*args, **kwargs):
key = id(func)
for arg in args:
key += id(arg)
for k, v in kwargs:
key += id(k) + id(v)
# If it was cached and the cache timeout hasn't been reached
if key in _cache and time() - _cache[key][0] < timeout:
return _cache[key][1]
with _cache_lock:
result = func(*args, **kwargs)
_cache[key] = (time(), result)
return result
return with_caching
return _cached
def locked(func):
def with_locking(*args, **kwargs):
with _lock:
return func(*args, **kwargs)
return with_locking
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