'''
This file is part of PM4Py (More Info: https://pm4py.fit.fraunhofer.de).
PM4Py 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 3 of the License, or
(at your option) any later version.
PM4Py 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 PM4Py. If not, see <https://www.gnu.org/licenses/>.
'''
from threading import Lock
from typing import Optional, Dict, Any, Union
[docs]class ThreadSafeDict(dict):
def __init__(self, *args, **kw):
super(ThreadSafeDict, self).__init__(*args, **kw)
self.lock = Lock()
self.itemlist = super(ThreadSafeDict, self).keys()
def __setitem__(self, key, value):
# TODO: what should happen to the order if
# the key is already in the dict
self.lock.acquire()
super(ThreadSafeDict, self).__setitem__(key, value)
self.lock.release()
def __iter__(self):
self.lock.acquire()
ret = iter(self.itemlist)
self.lock.release()
return ret
[docs] def keys(self):
self.lock.acquire()
ret = set(self.itemlist)
self.lock.release()
return ret
[docs] def values(self):
self.lock.acquire()
ret = [self[key] for key in self]
self.lock.release()
return ret
[docs] def itervalues(self):
self.lock.acquire()
ret = (self[key] for key in self)
self.lock.release()
return ret
[docs]def apply(parameters: Optional[Dict[Any, Any]] = None):
return ThreadSafeDict()