ImageKnife/library/src/main/ets/components/imageknife/utils/DefaultJobQueue.ets

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/*
* Copyright (C) 2024 Huawei Device Co., Ltd.
* 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 { IJobQueue } from './IJobQueue';
import Queue from '@ohos.util.Queue';
import taskpool from '@ohos.taskpool';
import { RequestOption } from '../RequestOption';
export class DefaultJobQueue implements IJobQueue {
highQueue: Queue<RequestOption> = new Queue();
normalQueue: Queue<RequestOption> = new Queue();
lowQueue: Queue<RequestOption> = new Queue();
getQueueLength(): number {
return this.highQueue.length + this.normalQueue.length + this.lowQueue.length;
}
add(request: RequestOption): void {
if (request.priority === undefined || request.priority === taskpool.Priority.MEDIUM) {
this.normalQueue.add(request);
} else if (request.priority === taskpool.Priority.HIGH) {
this.highQueue.add(request);
} else {
this.lowQueue.add(request);
}
}
pop(): RequestOption | undefined {
if (this.highQueue.length > 0) {
return this.highQueue.pop();
} else if (this.normalQueue.length > 0) {
return this.normalQueue.pop();
} else {
return this.lowQueue.pop();
}
}
}