问题很简单:
示例:
For (iterate based on amount of cores){
Let worker = workers[I]
Worker.postmessage
}
示例结束。
免责声明:此示例仅显示最终结果的预期结果,并不代表“工作条件”。另请注意,上面使用的方法不会返回“workers [iterator]”的worker,而只是返回undefined。
目标:创建工作方法:
1:制作一组未知数量的工人(基于核心)。
2:一旦构建了该数组,就向每个worker发布一条消息并返回一个结果(未定义)。
注意:我确实有一个假设,说明为什么它不起作用:
1:创建Web worker并且只能通过创建它们的事件访问它,并且它唯一的接受是onmessage“event”处理程序。
这是我问的主要原因,因为我知道这是可能的,但想要一个简单的答案。
感谢您的时间。
答案 0 :(得分:1)
以下是一个例子:
function createWorker (workerScript) {
const blob = new Blob([`(${workerScript})(self)`], {type: 'application/javascript'});
return new Worker(URL.createObjectURL(blob));
};
function workerCode (self) {
self.onmessage = function (message) {
postMessage(`Data from worker: ${message.data}`);
};
};
// assuming that you will send only one message to the worker,
// and that the worker will produce only one message too.
function workerPromise (worker, message) {
const promise = new Promise((resolve, reject) => {
worker.onmessage = resolve;
}).then(message => message.data);
worker.postMessage(message);
return promise;
}
(async () => {
const workers = [];
for (let i = 0; i < navigator.hardwareConcurrency; i++) {
workers.push(createWorker(workerCode));
}
const results = await Promise.all(
workers.map((w, index) => workerPromise(w, `worker ${index}`))
);
console.log(results);
})();
答案 1 :(得分:0)
从https://developer.mozilla.org/en-US/docs/Web/API/NavigatorConcurrentHardware/hardwareConcurrency
下的“示例”部分开始修改后的示例:
// in Main thread
const numberOfCPUCores = window.navigator.hardwareConcurrency;
const workerList = [];
const cpuWorkerMessageHandler = event => {
// process message from a worker by accessing: event.data
}
for (let i = 0; i < numberOfCPUCores; i++) {
const newWorker = new Worker('cpuworker.js');
newWorker.addEventListener("message", cpuWorkerMessageHandler);
workerList.push(newWorker);
}
// then, when done with all processing, terminate all workers
workerList.forEach(w => w.terminate());