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46 lines
1.9 KiB
46 lines
1.9 KiB
2 years ago
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"use strict";
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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function createPool(size) {
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let pendingPromises = [];
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const pool = {
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submit(task) {
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return __awaiter(this, void 0, void 0, function* () {
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while (pendingPromises.length >= pool.size) {
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yield Promise.race(pendingPromises).catch(() => undefined);
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}
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let resolve;
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let reject;
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const taskPromise = new Promise((taskResolve, taskReject) => {
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resolve = taskResolve;
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reject = taskReject;
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});
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const donePromise = new Promise((doneResolve) => {
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task(() => {
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doneResolve(undefined);
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pendingPromises = pendingPromises.filter((pendingPromise) => pendingPromise !== donePromise);
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})
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.then(resolve)
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.catch(reject);
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});
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pendingPromises.push(donePromise);
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return taskPromise;
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});
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},
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size,
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get pending() {
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return pendingPromises.length;
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},
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};
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return pool;
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}
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exports.createPool = createPool;
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