Javascript 如何处理对同一Web Worker的多个请求
我创建了一个处理大量数据的web worker。以下是代码实现: worker.jsJavascript 如何处理对同一Web Worker的多个请求,javascript,html,web-worker,Javascript,Html,Web Worker,我创建了一个处理大量数据的web worker。以下是代码实现: worker.js self.addEventListener('message', function(e) { console.log('Message received from main script'); for(var i=0; i<999999999; i++){ // computation here } console.log('Posting message back to main
self.addEventListener('message', function(e) {
console.log('Message received from main script');
for(var i=0; i<999999999; i++){
// computation here
}
console.log('Posting message back to main script');
self.postMessage('You said: ' + e.data);
}, false);
在这种情况下,我不想多次执行callWorker
。
我想要的是,如果callWorker
当前正在执行,并且意味着当为callWorker
发出第二个请求时,第一个请求应该终止,第二个请求应该处理(最新的请求应该处理)
我怎样才能做到这一点?感谢您的帮助我想您可以尝试终止工作程序并重新启动它。 调用terminate方法时,它将立即终止,而无需等待操作完成
myWorker.terminate();
myWorker = new Worker('worker.js');
如果callWorker当前正在执行,并且意味着第二个请求会引发callWorker,那么第一个请求应该终止,第二个请求应该处理(最新的请求应该处理)
如果不解雇工人,恐怕你无法做到这一点。与其尝试终止当前进程,我认为您应该等到进程完成后再发送下一条消息。我来这里参加聚会有点晚,但我只想分享我的解决方案: 我也有同样的问题,在我的情况下,等待时间太长,创建新员工的效率不够 我的解决办法是:
self.addEventListener("message", function (e) {
var args = new Int16Array(e.data);
if (args[0] === 1) {//Start new task/start over.
ExecuteTask(args);
self.postMessage("CONTINUE?");
}else if (args[0] === 2) {//Continue
ExecuteTask(args);
self.postMessage("CONTINUE?");
}else{
self.postMessage("TASK_TERMINATED");
}
}
主线程:
myWorker.addEventListener('message', function (e) {
if (e.data === "CONTINUE?") {
// ask the worker to start over with new data
if (newTask) {
myWorker.postMessage(newDataMessage);
}
//No new tasks. Let the worker know it can continue.
else{
myWorker.postMessage(continueMessage);
}
} else if (e.data === "TASK_EXECUTED" || e.data === "TASK_TERMINATED" ) {
workerIdle = true; //let main thread know it can execute the next new task instead of queueing it up.
}
});
myWorker.addEventListener('message', function (e) {
if (e.data === "CONTINUE?") {
// ask the worker to start over with new data
if (newTask) {
myWorker.postMessage(newDataMessage);
}
//No new tasks. Let the worker know it can continue.
else{
myWorker.postMessage(continueMessage);
}
} else if (e.data === "TASK_EXECUTED" || e.data === "TASK_TERMINATED" ) {
workerIdle = true; //let main thread know it can execute the next new task instead of queueing it up.
}
});