unfork DDC's copy of most SDK libraries

pkg/dev_compiler/tool/input_sdk/private/isolate_helper.dart

 // 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 dart._isolate_helper;
 
 import 'dart:_js_embedded_names' show
     CLASS_ID_EXTRACTOR,
     CLASS_FIELDS_EXTRACTOR,
     CURRENT_SCRIPT,
@@ skipping 364 matching lines @@
   }
 
   void handlePing(SendPort responsePort, int pingType) {
     if (pingType == Isolate.IMMEDIATE ||
         (pingType == Isolate.BEFORE_NEXT_EVENT &&
          !_isExecutingEvent)) {
       responsePort.send(null);
       return;
     }
     void respond() { responsePort.send(null); }
-    if (pingType == Isolate.AS_EVENT) {
-      _globalState.topEventLoop.enqueue(this, respond, "ping");
-      return;
-    }
     assert(pingType == Isolate.BEFORE_NEXT_EVENT);
     if (_scheduledControlEvents == null) {
       _scheduledControlEvents = new Queue();
     }
     _scheduledControlEvents.addLast(respond);
   }
 
   void handleKill(Capability authentification, int priority) {
     if (this.terminateCapability != authentification) return;
     if (priority == Isolate.IMMEDIATE ||
         (priority == Isolate.BEFORE_NEXT_EVENT &&
          !_isExecutingEvent)) {
       kill();
       return;
     }
-    if (priority == Isolate.AS_EVENT) {
-      _globalState.topEventLoop.enqueue(this, kill, "kill");
-      return;
-    }
     assert(priority == Isolate.BEFORE_NEXT_EVENT);
     if (_scheduledControlEvents == null) {
       _scheduledControlEvents = new Queue();
     }
     _scheduledControlEvents.addLast(kill);
   }
 
   void addErrorListener(SendPort port) {
     errorPorts.add(port);
   }
@@ skipping 319 matching lines @@
   // primitives that require support for spawning workers. The field starts out
   // by being null, and dart2js' type inference will track if it can have a
   // non-null value. So by testing if this value is not null, we generate code
   // that dart2js knows is dead when worker support isn't needed.
   // TODO(herhut): Initialize this to false when able to track compile-time
   // constants.
   static var enableSpawnWorker;
 
   static String thisScript = computeThisScript();
 
+  /// Returns the base path added to Uri.base to resolve `package:` Uris.
+  ///
+  /// This is used by `Isolate.resolvePackageUri` to load resources. The default
+  /// value is `packages/` but users can override this by using the
+  /// `defaultPackagesBase` hook.
+  static String get packagesBase =>
+      JS('String', r'self.defaultPackagesBase || "packages/"');
+
   /// Associates an ID with a native worker object.
   static final Expando<int> workerIds = new Expando<int>();
 
   /**
    * The src url for the script tag that loaded this Used to create
    * JavaScript workers.
    */
   static String computeThisScript() {
     // See: https://github.com/dart-lang/dev_compiler/issues/164
     // var currentScript = JS_EMBEDDED_GLOBAL('', CURRENT_SCRIPT);
@@ skipping 689 matching lines @@
   }
 
   bool operator==(Object other) {
     if (identical(other, this)) return true;
     if (other is CapabilityImpl) {
       return identical(_id, other._id);
     }
     return false;
   }
 }