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# Copyright 2015, 2016 Suomen Tilaajavastuu Oy
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import _thread
class Counter:
'''A threadsafe incrementing counter.'''
def __init__(self):
self._lock = _thread.allocate_lock()
self._counter = 0
def get(self):
return self._counter
def increment(self):
with self._lock:
self._counter += 1
return self._counter
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