| /* |
| * Copyright (c) 2017, the Dart project authors. Please see the AUTHORS |
| * file for details. All rights reserved. Use of this source code is governed |
| * by a BSD-style license that can be found in the LICENSE file. |
| */ |
| /** |
| * @assertion Capability pause([ |
| * Capability resumeCapability |
| * ]) |
| * Requests the isolate to pause. |
| * When the isolate receives the pause command, it stops processing events |
| * from the event loop queue. It may still add new events to the queue in |
| * response to, e.g., timers or receive-port messages. When the isolate is |
| * resumed, it handles the already enqueued events. |
| * |
| * @description Check that isolate does not handle timer events after pause() |
| * call. |
| * |
| * @author a.semenov@unipro.ru |
| */ |
| import "dart:isolate"; |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| import "IsolateUtil.dart"; |
| |
| void entryPoint(SendPort sendPort) { |
| new Future.delayed(ONE_SECOND, () { |
| sendPort.send("from timer 1"); |
| }); |
| new Future.delayed(TWO_SECONDS, () { |
| sendPort.send("from timer 2"); |
| }); |
| sendPort.send("activated"); |
| } |
| |
| test() async { |
| bool additionalData = false; |
| Isolate? isolate; |
| ReceivePort receivePort = new ReceivePort(); |
| receivePort.listen((data) { |
| if ("activated" == data) { |
| isolate?.pause(); |
| } else { |
| print(data); |
| additionalData = true; |
| } |
| }); |
| ReceivePort onExit = new ReceivePort(); |
| isolate = await Isolate.spawn(entryPoint, receivePort.sendPort, |
| onExit: onExit.sendPort); |
| await new Future.delayed(THREE_SECONDS); |
| // clean up & check |
| isolate.kill(priority: Isolate.immediate); |
| await onExit.first; |
| receivePort.close(); |
| Expect.isFalse(additionalData); |
| asyncEnd(); |
| } |
| |
| main() { |
| asyncStart(); |
| test(); |
| } |