blob: 536cc5c0b0a768a26f7fd3ad17e63789f5a4a8e0 [file] [log] [blame]
// Copyright (c) 2014, 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.
import "dart:async";
import "dart:isolate";
// This type corresponds to the VM-internal class LibraryPrefix.
class _LibraryPrefix {
bool _load() native "LibraryPrefix_load";
bool _invalidateDependentCode()
native "LibraryPrefix_invalidateDependentCode";
loadLibrary() {
var completer = _outstandingLoadRequests[this];
if (completer != null) {
return completer.future;
completer = new Completer<bool>();
_outstandingLoadRequests[this] = completer; {
var hasCompleted = this._load();
// Loading can complete immediately, for example when the same
// library has been loaded eagerly or through another deferred
// prefix. If that is the case, we must invalidate the dependent
// code and complete the future now since there will be no callback
// from the VM.
if (hasCompleted) {
return completer.future;
var _outstandingLoadRequests = new Map<_LibraryPrefix, Completer>();
// Called from the VM when all outstanding load requests have
// finished.
_completeDeferredLoads() {
var lenghth = _outstandingLoadRequests;
_outstandingLoadRequests.forEach((prefix, completer) {