| // Copyright (c) 2019, 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 |
| |
| import "dart:async"; |
| import "dart:isolate"; |
| import "dart:typed_data"; |
| import "package:expect/expect.dart"; |
| |
| const large = 1 << 30; |
| |
| void child(replyPort) { |
| print("Child start"); |
| |
| print("Child Uint8List"); |
| dynamic x = new Uint8List(large); |
| for (int i = 0; i < 4; i++) { |
| x[i] = i; |
| } |
| for (int i = x.length - 4; i < x.length; i++) { |
| x[i] = x.length - i; |
| } |
| replyPort.send(x); |
| x = null; |
| |
| // Too slow. |
| // print("Child Array"); |
| // x = new List(large); |
| // for (int i = 0; i < 4; i++) { |
| // x[i] = i; |
| // } |
| // replyPort.send(x); |
| // x = null; |
| |
| print("Child OneByteString"); |
| x = null; |
| x = "Z"; |
| while (x.length < large) { |
| x = x * 2; |
| } |
| replyPort.send(x); |
| x = null; |
| |
| print("Child done"); |
| } |
| |
| Future<void> main(List<String> args) async { |
| print("Parent start"); |
| |
| ReceivePort port = new ReceivePort(); |
| Isolate.spawn(child, port.sendPort); |
| StreamIterator<dynamic> incoming = new StreamIterator<dynamic>(port); |
| |
| print("Parent Uint8"); |
| Expect.isTrue(await incoming.moveNext()); |
| dynamic x = incoming.current; |
| Expect.isTrue(x is Uint8List); |
| Expect.equals(large, x.length); |
| for (int i = 0; i < 4; i++) { |
| Expect.equals(i, x[i]); |
| } |
| for (int i = x.length - 4; i < x.length; i++) { |
| Expect.equals(x.length - i, x[i]); |
| } |
| x = null; |
| |
| // Too slow. |
| // print("Parent Array"); |
| // Expect.isTrue(await incoming.moveNext()); |
| // x = incoming.current; |
| // Expect.isTrue(x is List); |
| // Expect.equals(large, x.length); |
| // for (int i = 0; i < 4; i++) { |
| // Expect.equals(i, x[i]); |
| // } |
| // x = null; |
| |
| print("Parent OneByteString"); |
| Expect.isTrue(await incoming.moveNext()); |
| x = incoming.current; |
| Expect.isTrue(x is String); |
| Expect.equals(large, x.length); |
| for (int i = 0; i < 4; i++) { |
| Expect.equals("Z", x[i]); |
| } |
| for (int i = x.length - 4; i < x.length; i++) { |
| Expect.equals("Z", x[i]); |
| } |
| x = null; |
| |
| port.close(); |
| print("Parent done"); |
| } |