| // Copyright (c) 2011-2016, 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. |
| |
| // @dart = 2.9 |
| |
| /// @assertion Future<Isolate> spawn(void entryPoint(message), message, |
| /// {bool paused: false, bool errorsAreFatal, SendPort onExit, SendPort onError}) |
| /// |
| /// The argument entryPoint specifies the entry point of the spawned isolate. |
| /// It must be a top-level function or a static method that takes one argument - |
| /// that is, one-parameter functions that can be compile-time constant function |
| /// values. It is not allowed to pass the value of function expressions or |
| /// an instance method extracted from an object. |
| /// |
| /// The entry-point function is invoked with the initial message. Usually |
| /// the initial message contains a SendPort so that the spawner and spawnee can |
| /// communicate with each other. |
| /// |
| /// @description Checks that chained spawning of 10 isolates works properly. |
| /// @author kaigorodov |
| |
| |
| import "dart:isolate"; |
| import "../../../Utils/expect.dart"; |
| |
| var expectedMessage="message"; |
| |
| class Connection { |
| var receivePort = new ReceivePort(); |
| SendPort replyPort; |
| |
| Connection([this.replyPort]); |
| |
| void receiveHandler(var message) { |
| Expect.equals(expectedMessage, message); |
| receivePort.close(); |
| if (replyPort!=null) { |
| replyPort.send(message); |
| } |
| asyncEnd(); |
| } |
| |
| start(int depth) { |
| asyncStart(); |
| Isolate.spawn(iMain, {"replyPort":receivePort.sendPort, "depth":depth}); |
| receivePort.listen(receiveHandler); |
| } |
| } |
| |
| void iMain(Map data) { |
| var depth=data["depth"]; |
| SendPort replyPort=data["replyPort"]; |
| if (depth==0) { |
| replyPort.send(expectedMessage); |
| } else { |
| ReceivePort port = new ReceivePort(); |
| new Connection(replyPort).start(depth-1); |
| } |
| } |
| |
| main() { |
| new Connection().start(10); |
| } |