@geeebe/common
Version:
39 lines • 1.43 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Mutex = void 0;
class Mutex {
constructor() {
this.mutex = Promise.resolve();
}
lock() {
let begin = () => { };
this.mutex = this.mutex.then(() => {
return new Promise(begin);
});
return new Promise((res) => {
begin = res;
});
}
dispatch(fn) {
return __awaiter(this, void 0, void 0, function* () {
const unlock = yield this.lock();
try {
return yield Promise.resolve(fn());
}
finally {
unlock();
}
});
}
}
exports.Mutex = Mutex;
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