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# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Reference chainer MIT (https://opensource.org/licenses/MIT)
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class TimeTrigger(object):
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"""Trigger based on a fixed time interval.
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This trigger accepts iterations with a given interval time.
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Args:
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period (float): Interval time. It is given in seconds.
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"""
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def __init__(self, period):
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self._period = period
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self._next_time = self._period
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def __call__(self, trainer):
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if self._next_time < trainer.elapsed_time:
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self._next_time += self._period
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return True
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else:
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return False
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