lrn@google.com
f7ac102369
This is a trivial implementation of Isolate.pause. It introduces out-of-band control messages to the control port int a simple way (if receiveport == controlport treat specially). Control port is now created for each isolate, along with a Capability allowing pausing. R=floitsch@google.com Review URL: https://codereview.chromium.org//153553009 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@32485 260f80e4-7a28-3924-810f-c04153c831b5
45 lines
1.2 KiB
Dart
45 lines
1.2 KiB
Dart
// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import "dart:isolate";
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import "dart:async";
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import "package:async_helper/async_helper.dart";
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isomain1(replyPort) {
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RawReceivePort port = new RawReceivePort();
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port.handler = (v) {
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replyPort.send(v);
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port.close();
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};
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replyPort.send(port.sendPort);
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}
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main(){
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asyncStart();
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RawReceivePort reply = new RawReceivePort();
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Isolate isolate;
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Capability resume;
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var completer = new Completer(); // Completed by first reply from isolate.
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reply.handler = completer.complete;
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Isolate.spawn(isomain1, reply.sendPort).then((Isolate iso) {
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isolate = iso;
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return completer.future;
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}).then((echoPort) {
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// Isolate has been created, and first response has been returned.
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resume = isolate.pause();
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echoPort.send(24);
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reply.handler = (v) {
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throw "RESPONSE WHILE PAUSED?!?";
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};
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return new Future.delayed(const Duration(milliseconds: 250));
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}).then((_) {
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reply.handler = (v) {
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if (v != 24) throw "WRONG ANSWER!";
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reply.close();
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asyncEnd();
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};
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isolate.resume(resume);
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});
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}
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