def cachedmethod(f, cache=LRUDict(capacity=MAX_CACHE_ITEMS)):
"""
Method with a cached content
>>> __ = cachedmethod(lambda _: _)
>>> __(1)
1
>>> __ = cachedmethod(lambda *args, **kwargs: args[0])
>>> __(2)
2
>>> __ = cachedmethod(lambda *args, **kwargs: list(kwargs.values())[0])
>>> __(foobar=3)
3
Reference: http://code.activestate.com/recipes/325205-cache-decorator-in-python-24/
"""
@functools.wraps(f)
def _(*args, **kwargs):
key = int(
hashlib.md5("|".join(str(_) for _ in (f, args, kwargs)).encode(
UNICODE_ENCODING)).hexdigest(), 16) & 0x7fffffffffffffff
try:
with _lock:
result = cache[key]
except KeyError:
result = f(*args, **kwargs)
with _lock:
cache[key] = result
return result
return _
def cachedmethod(f, cache=LRUDict(capacity=MAX_CACHE_ITEMS)):
"""
Method with a cached content
Reference: http://code.activestate.com/recipes/325205-cache-decorator-in-python-24/
"""
@functools.wraps(f)
def _(*args, **kwargs):
key = int(
hashlib.md5("|".join(str(_)
for _ in (f, args, kwargs))).hexdigest(),
16) & 0x7fffffffffffffff
try:
with _lock:
result = cache[key]
except KeyError:
result = f(*args, **kwargs)
with _lock:
cache[key] = result
return result
return _
def cachedmethod(f):
"""
Method with a cached content
>>> __ = cachedmethod(lambda _: _)
>>> __(1)
1
>>> __(1)
1
>>> __ = cachedmethod(lambda *args, **kwargs: args[0])
>>> __(2)
2
>>> __ = cachedmethod(lambda *args, **kwargs: next(iter(kwargs.values())))
>>> __(foobar=3)
3
Reference: http://code.activestate.com/recipes/325205-cache-decorator-in-python-24/
"""
_cache[f] = LRUDict(capacity=MAX_CACHE_ITEMS)
@functools.wraps(f)
def _f(*args, **kwargs):
try:
key = int(
hashlib.md5("|".join(str(_) for _ in (f, args, kwargs)).encode(
UNICODE_ENCODING)).hexdigest(), 16) & 0x7fffffffffffffff
except ValueError: # https://github.com/sqlmapproject/sqlmap/issues/4281 (NOTE: non-standard Python behavior where hexdigest returns binary value)
result = f(*args, **kwargs)
else:
try:
with _cache_lock:
result = _cache[f][key]
except KeyError:
result = f(*args, **kwargs)
with _cache_lock:
_cache[f][key] = result
return result
return _f