- Use a map to lookup libraries by URL.

runtime/lib/vmservice.cc

 // Copyright (c) 2015, 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.
 
 #include "vm/bootstrap_natives.h"
 #include "vm/dart_api_impl.h"
 #include "vm/datastream.h"
 #include "vm/exceptions.h"
 #include "vm/flags.h"
 #include "vm/growable_array.h"
@@ skipping 19 matching lines @@
  public:
   explicit RegisterRunningIsolatesVisitor(Thread* thread)
       : IsolateVisitor(),
         register_function_(Function::Handle(thread->zone())),
         service_isolate_(thread->isolate()) {
     ASSERT(ServiceIsolate::IsServiceIsolate(Isolate::Current()));
     // Get library.
     const String& library_url = Symbols::DartVMService();
     ASSERT(!library_url.IsNull());
     const Library& library =
-        Library::Handle(Library::LookupLibrary(library_url));
+        Library::Handle(Library::LookupLibrary(thread, library_url));
     ASSERT(!library.IsNull());
     // Get function.
     const String& function_name =
         String::Handle(String::New("_registerIsolate"));
     ASSERT(!function_name.IsNull());
     register_function_ = library.LookupFunctionAllowPrivate(function_name);
     ASSERT(!register_function_.IsNull());
   }
 
   virtual void VisitIsolate(Isolate* isolate) {
@@ skipping 380 matching lines @@
     idx += 2;
   }
 
   return result_list.raw();
 #else
   return Object::null();
 #endif
 }
 
 }  // namespace dart