# Copyright 2022 Cerebras Systems.
#
# 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.
# See the License for the specific language governing permissions and
# limitations under the License.

import multiprocessing


class Counter(object):
    """ Multiprocessing Counter """

    def __init__(self, initval=0):
        self.val = multiprocessing.Value('i', initval)
        self.lock = multiprocessing.Lock()

    def increment(self, value):
        with self.lock:
            self.val.value += value

    def value(self):
        with self.lock:
            return int(self.val.value)
