DartのIsolateで重い処理をさせてみる

isolate-heavy.dart

#import('dart:dom');

main() {
	window.addEventListener('DOMContentLoaded', (e) => ready(), false);
}

ready() {
	ReceivePort local = new ReceivePort();
	SendPort reply = local.toSendPort();
	local.receive((message, SendPort replyTo) {
		if (message == "おわります") {
			local.close();
		}
		document.querySelector("#out").textContent = message;
	});
	new MyIsolate().spawn().then((port) {
		port.send("開始しろ", reply);
	});
}

class MyIsolate extends Isolate {
	MyIsolate() : super.heavy() {}
	void main() {
		this.port.receive((message, SendPort replyTo) {
			for (var i = 0; i < 100000; i ++) {
				replyTo.send("おっすおっす!! "+i);
			}
			replyTo.send("おわります");
		});
	}
}