Implement prologue weak persistent handles.

runtime/vm/object.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 "vm/object.h"
 
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/bigint_operations.h"
 #include "vm/bootstrap.h"
@@ skipping 7819 matching lines @@
   return String::ToCString();
 }
 
 
 static void AddFinalizer(const Object& referent,
                          void* peer,
                          Dart_WeakPersistentHandleFinalizer callback) {
   ASSERT(callback != NULL);
   ApiState* state = Isolate::Current()->api_state();
   ASSERT(state != NULL);
-  WeakPersistentHandle* weak_ref =
+  FinalizablePersistentHandle* weak_ref =
       state->weak_persistent_handles().AllocateHandle();
   weak_ref->set_raw(referent);
   weak_ref->set_peer(peer);
   weak_ref->set_callback(callback);
 }
 
 
 RawExternalOneByteString* ExternalOneByteString::New(
     const uint8_t* data,
     intptr_t len,
@@ skipping 18 matching lines @@
     result.SetExternalData(external_data);
   }
   AddFinalizer(result, external_data, ExternalOneByteString::Finalize);
   return result.raw();
 }
 
 
 static void DeleteWeakPersistentHandle(Dart_Handle handle) {
   ApiState* state = Isolate::Current()->api_state();
   ASSERT(state != NULL);
-  WeakPersistentHandle* weak_ref =
-      reinterpret_cast<WeakPersistentHandle*>(handle);
+  FinalizablePersistentHandle* weak_ref =
+      reinterpret_cast<FinalizablePersistentHandle*>(handle);
   ASSERT(state->IsValidWeakPersistentHandle(handle));
   state->weak_persistent_handles().FreeHandle(weak_ref);
 }
 
 
 void ExternalOneByteString::Finalize(Dart_Handle handle, void* peer) {
   delete reinterpret_cast<ExternalStringData<uint8_t>*>(peer);
   DeleteWeakPersistentHandle(handle);
 }
 
@@ skipping 928 matching lines @@
   result.set_num_args_tested(num_args_tested);
   // Number of array elements in one test entry (num_args_tested + 1)
   intptr_t len = result.TestEntryLength();
   // IC data array must be null terminated (sentinel entry).
   const Array& ic_data = Array::Handle(Array::New(len, Heap::kOld));
   result.set_ic_data(ic_data);
   return result.raw();
 }
 
 }  // namespace dart