# Copyright 2021 Zilliz. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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import threading
[docs]class AtomicCount:
'''
Atomic count, support thread-safe += operator.
'''
[docs] def __init__(self, count: int):
self._count = count
self._lock = threading.Lock()
@property
def count(self):
return self._count
def __iadd__(self, num: int) -> 'AtomicCount':
with self._lock:
self._count += num
return self
