blob: 58169c74f4f0bc3e36cc853221a15fcffbf33af5 [file] [log] [blame]
// Copyright (c) 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.
/// A library for utility functions for dealing with isolates.
import 'dart:async';
import 'dart:io';
import 'dart:isolate';
/// Like [Isolate.spanwUri], except that this only returns once the Isolate has
/// exited.
/// If the isolate produces an unhandled exception, it's printed to stderr and
/// the [exitCode] variable is set to 255.
/// If [buffered] is `true`, this uses [spawnBufferedUri] to spawn the isolate.
Future<int> runUri(Uri url, List<String> args, Object message,
{bool buffered = false,
bool enableAsserts,
bool automaticPackageResolution = false,
Uri packageConfig}) async {
var errorPort = ReceivePort();
var exitPort = ReceivePort();
await Isolate.spawnUri(url, args, message,
checked: enableAsserts,
automaticPackageResolution: automaticPackageResolution,
packageConfig: packageConfig,
onError: errorPort.sendPort,
onExit: exitPort.sendPort);
final subscription = errorPort.listen((list) {
stderr.writeln('Unhandled exception:');
exitCode = 255;
try {
await exitPort.first;
} finally {
await subscription.cancel();
return exitCode;