Make static tear-off closures a class, like instance tear-off closures.

sdk/lib/_internal/compiler/implementation/lib/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 _isolate_helper;
 
 import 'dart:async';
 import 'dart:collection' show Queue, HashMap;
 import 'dart:isolate';
 import 'dart:_js_helper' show convertDartClosureToJS,
@@ skipping 55 matching lines @@
 _IsolateContext _currentIsolate() => _globalState.currentContext;
 
 /**
  * Wrapper that takes the dart entry point and runs it within an isolate. The
  * dart2js compiler will inject a call of the form
  * [: startRootIsolate(main); :] when it determines that this wrapping
  * is needed. For single-isolate applications (e.g. hello world), this
  * call is not emitted.
  */
 void startRootIsolate(entry) {
-  _globalState = new _Manager();
+  _globalState = new _Manager(entry);
 
   // Don't start the main loop again, if we are in a worker.
   if (_globalState.isWorker) return;
   final rootContext = new _IsolateContext();
   _globalState.rootContext = rootContext;
 
   // BUG(5151491): Setting currentContext should not be necessary, but
   // because closures passed to the DOM as event handlers do not bind their
   // isolate automatically we try to give them a reasonable context to live in
   // by having a "default" isolate (the first one created).
@@ skipping 94 matching lines @@
    * dead, but DOM callbacks could resurrect it.
    */
   Map<int, _IsolateContext> isolates;
 
   /** Reference to the main [_Manager].  Null in the main [_Manager] itself. */
   _ManagerStub mainManager;
 
   /** Registry of active [_ManagerStub]s.  Only used in the main [_Manager]. */
   Map<int, _ManagerStub> managers;
 
-  _Manager() {
+  /** The entry point given by [startRootIsolate]. */
+  final Function entry;
+
+  _Manager(this.entry) {
     _nativeDetectEnvironment();
     topEventLoop = new _EventLoop();
     isolates = new Map<int, _IsolateContext>();
     managers = new Map<int, _ManagerStub>();
     if (isWorker) {  // "if we are not the main manager ourself" is the intent.
       mainManager = new _MainManagerStub();
       _nativeInitWorkerMessageHandler();
     }
   }
 
@@ skipping 295 matching lines @@
 
   /**
    * Process messages on a worker, either to control the worker instance or to
    * pass messages along to the isolate running in the worker.
    */
   static void _processWorkerMessage(sender, e) {
     var msg = _deserializeMessage(_getEventData(e));
     switch (msg['command']) {
       case 'start':
         _globalState.currentManagerId = msg['id'];
-        Function entryPoint = _getJSFunctionFromName(msg['functionName']);
+        String functionName = msg['functionName'];
+        Function entryPoint = (functionName == null)
+            ? _globalState.entry
+            : _getJSFunctionFromName(functionName);
         var replyTo = _deserializeMessage(msg['replyTo']);
         var context = new _IsolateContext();
         _globalState.topEventLoop.enqueue(context, () {
           _startIsolate(entryPoint, replyTo);
         }, 'worker-start');
         // Make sure we always have a current context in this worker.
         // TODO(7907): This is currently needed because we're using
         // Timers to implement Futures, and this isolate library
         // implementation uses Futures. We should either stop using
         // Futures in this library, or re-adapt if Futures get a
@@ skipping 143 matching lines @@
     lazyPort = new ReceivePort();
     replyTo.send(_SPAWNED_SIGNAL, port.toSendPort());
     topLevel();
   }
 
   /**
    * Spawns an isolate in a worker. [factoryName] is the Javascript constructor
    * name for the isolate entry point class.
    */
   static void _spawnWorker(functionName, uri, replyPort) {
-    if (functionName == null) functionName = 'main';
     if (uri == null) uri = thisScript;
     final worker = _newWorker(uri);
     worker.onmessage = JS('',
                           'function(e) { #(#, e); }',
                           DART_CLOSURE_TO_JS(_processWorkerMessage),
                           worker);
     var workerId = _globalState.nextManagerId++;
     // We also store the id on the worker itself so that we can unregister it.
     worker.id = workerId;
     _globalState.managers[workerId] = worker;
@@ skipping 744 matching lines @@
         JS('void', '#.clearInterval(#)', globalThis, _handle);
       }
       _handle = null;
     } else {
       throw new UnsupportedError("Canceling a timer.");
     }
   }
 }
 
 bool hasTimer() => JS('', '#.setTimeout', globalThis) != null;