文件操作 - semaphore.js

文件: /var/www/OLD/node_modules/vscode-jsonrpc/lib/common/semaphore.js

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"use strict";
/* --------------------------------------------------------------------------------------------
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License. See License.txt in the project root for license information.
 * ------------------------------------------------------------------------------------------ */
Object.defineProperty(exports, "__esModule", { value: true });
exports.Semaphore = void 0;
const ral_1 = require("./ral");
class Semaphore {
    constructor(capacity = 1) {
        if (capacity <= 0) {
            throw new Error('Capacity must be greater than 0');
        }
        this._capacity = capacity;
        this._active = 0;
        this._waiting = [];
    }
    lock(thunk) {
        return new Promise((resolve, reject) => {
            this._waiting.push({ thunk, resolve, reject });
            this.runNext();
        });
    }
    get active() {
        return this._active;
    }
    runNext() {
        if (this._waiting.length === 0 || this._active === this._capacity) {
            return;
        }
        ral_1.default().timer.setImmediate(() => this.doRunNext());
    }
    doRunNext() {
        if (this._waiting.length === 0 || this._active === this._capacity) {
            return;
        }
        const next = this._waiting.shift();
        this._active++;
        if (this._active > this._capacity) {
            throw new Error(`To many thunks active`);
        }
        try {
            const result = next.thunk();
            if (result instanceof Promise) {
                result.then((value) => {
                    this._active--;
                    next.resolve(value);
                    this.runNext();
                }, (err) => {
                    this._active--;
                    next.reject(err);
                    this.runNext();
                });
            }
            else {
                this._active--;
                next.resolve(result);
                this.runNext();
            }
        }
        catch (err) {
            this._active--;
            next.reject(err);
            this.runNext();
        }
    }
}
exports.Semaphore = Semaphore;
//# sourceMappingURL=semaphore.js.map

文件操作 - semaphore.js

文件: /var/www/OLD/node_modules/vscode-jsonrpc/lib/common/semaphore.js

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