36 lines
1.4 KiB
Java
36 lines
1.4 KiB
Java
/*
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* Copyright 2019 dorkbox, llc
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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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*/
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package dorkbox.messageBus;
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public
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enum SubscriptionMode {
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/**
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* This is the default.
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* <p>
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* We use strong references when saving the subscribed listeners (these are the classes & methods that receive messages).
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* <p>
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* In certain environments (ie: spring), it is desirable to use weak references -- so that there are no memory leaks during
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* the container lifecycle (or, more specifically, so one doesn't have to manually manage the memory).
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*/
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StrongReferences,
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/**
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* Using weak references is a tad slower than using strong references, since there are additional steps taken when there are orphaned
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* references (when GC occurs) that have to be cleaned up. This cleanup occurs during message publication.
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*/
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WeakReferences
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}
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