blob: 7d189022e8ceb9be47d117c63e68133ab19dea64 [file] [log] [blame]
// Copyright (c) 2012, 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.
library sample_asynchronous_extension;
import 'dart:async';
import 'dart:isolate';
import 'dart-ext:sample_extension';
// A class caches the native port used to call an asynchronous extension.
class RandomArray {
static SendPort? _port;
Future<List<int>> randomArray(int seed, int length) {
var completer = new Completer<List<int>>();
var replyPort = new RawReceivePort();
var args = [seed, length, replyPort.sendPort];
replyPort.handler = (result) {
if (result != null) {
} else {
completer.completeError(new Exception("Random array creation failed"));
return completer.future;
SendPort get _servicePort {
if (_port == null) {
_port = _newServicePort();
return _port!;
SendPort _newServicePort() native "RandomArray_ServicePort";