convex
Version:
Client for the Convex Cloud
57 lines (56 loc) • 2.08 kB
JavaScript
;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var __publicField = (obj, key, value) => __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
var mutex_exports = {};
__export(mutex_exports, {
Mutex: () => Mutex
});
module.exports = __toCommonJS(mutex_exports);
class Mutex {
constructor() {
__publicField(this, "currentlyRunning", null);
__publicField(this, "waiting", []);
}
async runExclusive(fn) {
const outerPromise = new Promise((resolve, reject) => {
const wrappedCallback = () => {
return fn().then((v) => resolve(v)).catch((e) => reject(e));
};
this.enqueueCallbackForMutex(wrappedCallback);
});
return outerPromise;
}
enqueueCallbackForMutex(callback) {
if (this.currentlyRunning === null) {
this.currentlyRunning = callback().finally(() => {
const nextCb = this.waiting.shift();
if (nextCb === void 0) {
this.currentlyRunning = null;
} else {
this.enqueueCallbackForMutex(nextCb);
}
});
this.waiting.length = 0;
} else {
this.waiting.push(callback);
}
}
}
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