Replace linked list of loaded libraries

runtime/vm/debugger_api_impl.cc

 // 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.
 
 #include "include/dart_debugger_api.h"
 
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_state.h"
 #include "vm/debugger.h"
 #include "vm/isolate.h"
@@ skipping 480 matching lines @@
   }
   return Api::NewHandle(isolate, script_list.raw());
 }
 
 
 DART_EXPORT Dart_Handle Dart_GetLibraryURLs() {
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate != NULL);
   DARTSCOPE(isolate);
 
-  // Find out how many libraries are loaded in this isolate.
-  int num_libs = 0;
-  Library &lib = Library::Handle();
-  lib = isolate->object_store()->registered_libraries();
-  while (!lib.IsNull()) {
-    num_libs++;
-    lib = lib.next_registered();
-  }
+  const GrowableObjectArray& libs =
+      GrowableObjectArray::Handle(isolate->object_store()->libraries());
+  int num_libs = libs.Length();
 
   // Create new list and populate with the url of loaded libraries.
-  const Array& library_list = Array::Handle(Array::New(num_libs));
-  lib = isolate->object_store()->registered_libraries();
+  Library &lib = Library::Handle();
   String& lib_url = String::Handle();
+  const Array& library_url_list = Array::Handle(Array::New(num_libs));
   for (int i = 0; i < num_libs; i++) {
+    lib ^= libs.At(i);
     ASSERT(!lib.IsNull());
     lib_url = lib.url();
-    library_list.SetAt(i, lib_url);
-    lib = lib.next_registered();
+    library_url_list.SetAt(i, lib_url);
   }
-  return Api::NewHandle(isolate, library_list.raw());
+  return Api::NewHandle(isolate, library_url_list.raw());
 }
 
 }  // namespace dart