DMleadgen
46d973904b
Next.js website for Rocky Mountain Vending company featuring: - Product catalog with Stripe integration - Service areas and parts pages - Admin dashboard with Clerk authentication - SEO optimized pages with JSON-LD structured data Co-authored-by: Cursor <cursoragent@cursor.com>
68 lines
No EOL
2.2 KiB
Text
68 lines
No EOL
2.2 KiB
Text
"use strict";
|
|
/**
|
|
* Copyright 2023 Google LLC.
|
|
* Copyright (c) Microsoft Corporation.
|
|
* Copyright 2022 The Chromium Authors.
|
|
*
|
|
* 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.
|
|
*/
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.Mutex = void 0;
|
|
/**
|
|
* Use Mutex class to coordinate local concurrent operations.
|
|
* Once `acquire` promise resolves, you hold the lock and must
|
|
* call `release` function returned by `acquire` to release the
|
|
* lock. Failing to `release` the lock may lead to deadlocks.
|
|
*/
|
|
class Mutex {
|
|
#locked = false;
|
|
#acquirers = [];
|
|
// This is FIFO.
|
|
acquire() {
|
|
const state = { resolved: false };
|
|
if (this.#locked) {
|
|
return new Promise((resolve) => {
|
|
this.#acquirers.push(() => resolve(this.#release.bind(this, state)));
|
|
});
|
|
}
|
|
this.#locked = true;
|
|
return Promise.resolve(this.#release.bind(this, state));
|
|
}
|
|
#release(state) {
|
|
if (state.resolved) {
|
|
throw new Error('Cannot release more than once.');
|
|
}
|
|
state.resolved = true;
|
|
const resolve = this.#acquirers.shift();
|
|
if (!resolve) {
|
|
this.#locked = false;
|
|
return;
|
|
}
|
|
resolve();
|
|
}
|
|
async run(action) {
|
|
const release = await this.acquire();
|
|
try {
|
|
// Note we need to await here because we want the await to release AFTER
|
|
// that await happens. Returning action() will trigger the release
|
|
// immediately which is counter to what we want.
|
|
const result = await action();
|
|
return result;
|
|
}
|
|
finally {
|
|
release();
|
|
}
|
|
}
|
|
}
|
|
exports.Mutex = Mutex;
|
|
//# sourceMappingURL=Mutex.js.map |