@aws-amplify/core/dist/esm/Mutex/Mutex.mjs.map

Core category of aws-amplify

{"version":3,"file":"Mutex.mjs","sources":["../../../src/Mutex/Mutex.ts"],"sourcesContent":["// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.\n// SPDX-License-Identifier: Apache-2.0\n/*!\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 Christian Speckner <cnspeckn@googlemail.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\nexport class Mutex {\n    constructor() {\n        this._queue = [];\n        this._pending = false;\n    }\n    isLocked() {\n        return this._pending;\n    }\n    acquire() {\n        const ticket = new Promise(resolve => this._queue.push(resolve));\n        if (!this._pending) {\n            this._dispatchNext();\n        }\n        return ticket;\n    }\n    runExclusive(callback) {\n        return this.acquire().then(release => {\n            let result;\n            try {\n                result = callback();\n            }\n            catch (e) {\n                release();\n                throw e;\n            }\n            return Promise.resolve(result).then((x) => {\n                release();\n                return x;\n            }, e => {\n                release();\n                throw e;\n            });\n        });\n    }\n    _dispatchNext() {\n        if (this._queue.length > 0) {\n            this._pending = true;\n            this._queue.shift()(this._dispatchNext.bind(this));\n        }\n        else {\n            this._pending = false;\n        }\n    }\n}\n"],"names":[],"mappings":"AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACO,MAAM,KAAK,CAAC;AACnB,IAAI,WAAW,GAAG;AAClB,QAAQ,IAAI,CAAC,MAAM,GAAG,EAAE;AACxB,QAAQ,IAAI,CAAC,QAAQ,GAAG,KAAK;AAC7B;AACA,IAAI,QAAQ,GAAG;AACf,QAAQ,OAAO,IAAI,CAAC,QAAQ;AAC5B;AACA,IAAI,OAAO,GAAG;AACd,QAAQ,MAAM,MAAM,GAAG,IAAI,OAAO,CAAC,OAAO,IAAI,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,OAAO,CAAC,CAAC;AACxE,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,EAAE;AAC5B,YAAY,IAAI,CAAC,aAAa,EAAE;AAChC;AACA,QAAQ,OAAO,MAAM;AACrB;AACA,IAAI,YAAY,CAAC,QAAQ,EAAE;AAC3B,QAAQ,OAAO,IAAI,CAAC,OAAO,EAAE,CAAC,IAAI,CAAC,OAAO,IAAI;AAC9C,YAAY,IAAI,MAAM;AACtB,YAAY,IAAI;AAChB,gBAAgB,MAAM,GAAG,QAAQ,EAAE;AACnC;AACA,YAAY,OAAO,CAAC,EAAE;AACtB,gBAAgB,OAAO,EAAE;AACzB,gBAAgB,MAAM,CAAC;AACvB;AACA,YAAY,OAAO,OAAO,CAAC,OAAO,CAAC,MAAM,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,KAAK;AACvD,gBAAgB,OAAO,EAAE;AACzB,gBAAgB,OAAO,CAAC;AACxB,aAAa,EAAE,CAAC,IAAI;AACpB,gBAAgB,OAAO,EAAE;AACzB,gBAAgB,MAAM,CAAC;AACvB,aAAa,CAAC;AACd,SAAS,CAAC;AACV;AACA,IAAI,aAAa,GAAG;AACpB,QAAQ,IAAI,IAAI,CAAC,MAAM,CAAC,MAAM,GAAG,CAAC,EAAE;AACpC,YAAY,IAAI,CAAC,QAAQ,GAAG,IAAI;AAChC,YAAY,IAAI,CAAC,MAAM,CAAC,KAAK,EAAE,CAAC,IAAI,CAAC,aAAa,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;AAC9D;AACA,aAAa;AACb,YAAY,IAAI,CAAC,QAAQ,GAAG,KAAK;AACjC;AACA;AACA;;;;"}