def __init__(self, name=None, maxsize=0, time_extension=None):
"""
:param maxsize:
0 by default which means store as more cache k/v as the system can
:param time_extension:
When a cache item has been hit, the expire_time will be refreshed
to the greater one, either (TIME_EXTENSION + time.time() or
(TIME_EXTENSION + expire_sec)
"""
if name is not None:
self._name = name
else:
self._name = 'cache.noname.{0}'.format(uuid.uuid4())
log.warn(
'You initialize the KVCache with no name. Strongly suggest'
'you pick up a meaningful name for it in order to debug'
)
self._sorted_keys = queue.PriorityQueue(maxsize=maxsize)
self._maxsize = maxsize
self._kv_data = {}
self._lock = thread.RWLock()
if time_extension is None:
self._time_extension = self.TIME_EXTENSION
else:
self._time_extension = time_extension
def __init__(self, maxsize=0):
"""
:param maxsize:
not used yet, for future use
"""
self._maxsize = maxsize
self._kv_data = {}
self._lock = thread.RWLock()
def test_rw_rw_lock():
lock = thread.RWLock()
lock.acquire_writelock(None)
try:
lock.acquire_writelock(1)
except RuntimeError as error:
pass
try:
lock.acquire_readlock(1)
except RuntimeError as error:
pass
lock.release_writelock()
def __init__(self):
# store kv_data
self._kv_data = {}
self._lock = thread.RWLock()
def __init__(self, maxsize=0):
# store kv_data
self._kv_data = {}
self._orderedqueue = queue.PriorityQueue()
self._lock = thread.RWLock()