33 lines
927 B
JavaScript
33 lines
927 B
JavaScript
/*
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Copyright 2021 The Matrix.org Foundation C.I.C.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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export class RetainedValue {
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constructor(freeCallback) {
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this._freeCallback = freeCallback;
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this._retentionCount = 1;
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}
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retain() {
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this._retentionCount += 1;
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}
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release() {
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this._retentionCount -= 1;
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if (this._retentionCount === 0) {
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this._freeCallback();
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}
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}
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}
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