35 lines
811 B
TypeScript
35 lines
811 B
TypeScript
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import * as plugins from './lik.plugins.js';
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export class BackpressuredArray<T> {
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private data: T[];
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private highWaterMark: number;
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public hasSpace: plugins.smartrx.rxjs.Subject<void>;
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constructor(highWaterMark: number = 16) {
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this.data = [];
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this.highWaterMark = highWaterMark;
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this.hasSpace = new plugins.smartrx.rxjs.Subject<void>();
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}
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push(item: T): boolean {
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this.data.push(item);
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const spaceAvailable = this.checkSpaceAvailable();
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if (spaceAvailable) {
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this.hasSpace.next();
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}
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return spaceAvailable
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}
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shift(): T | undefined {
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const item = this.data.shift();
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if (this.checkSpaceAvailable()) {
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this.hasSpace.next();
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}
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return item;
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}
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checkSpaceAvailable(): boolean {
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return this.data.length < this.highWaterMark;
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}
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}
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