Revert 'Introduce phantom weak handles in the API and use them internally for debug info'

test/cctest/test-api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 7451 matching lines @@
   v8::V8::RemoveMessageListeners(MissingScriptInfoMessageListener);
 }
 
 
 struct FlagAndPersistent {
   bool flag;
   v8::Persistent<v8::Object> handle;
 };
 
 
-static void SetFlag(
+static void DisposeAndSetFlag(
     const v8::WeakCallbackData<v8::Object, FlagAndPersistent>& data) {
+  data.GetParameter()->handle.Reset();
   data.GetParameter()->flag = true;
 }
 
 
-static void IndependentWeakHandle(bool global_gc, bool interlinked) {
+THREADED_TEST(IndependentWeakHandle) {
   v8::Isolate* iso = CcTest::isolate();
   v8::HandleScope scope(iso);
   v8::Handle<Context> context = Context::New(iso);
   Context::Scope context_scope(context);
 
   FlagAndPersistent object_a, object_b;
 
-  intptr_t big_heap_size;
-
   {
     v8::HandleScope handle_scope(iso);
-    Local<Object> a(v8::Object::New(iso));
-    Local<Object> b(v8::Object::New(iso));
-    object_a.handle.Reset(iso, a);
-    object_b.handle.Reset(iso, b);
-    if (interlinked) {
-      a->Set(v8_str("x"), b);
-      b->Set(v8_str("x"), a);
-    }
-    if (global_gc) {
-      CcTest::heap()->CollectAllGarbage(TestHeap::Heap::kNoGCFlags);
-    } else {
-      CcTest::heap()->CollectGarbage(i::NEW_SPACE);
-    }
-    // We are relying on this creating a big flag array and reserving the space
-    // up front.
-    v8::Handle<Value> big_array = CompileRun("new Array(50000)");
-    a->Set(v8_str("y"), big_array);
-    big_heap_size = CcTest::heap()->SizeOfObjects();
+    object_a.handle.Reset(iso, v8::Object::New(iso));
+    object_b.handle.Reset(iso, v8::Object::New(iso));
   }
 
   object_a.flag = false;
   object_b.flag = false;
-  object_a.handle.SetPhantom(&object_a, &SetFlag);
-  object_b.handle.SetPhantom(&object_b, &SetFlag);
+  object_a.handle.SetWeak(&object_a, &DisposeAndSetFlag);
+  object_b.handle.SetWeak(&object_b, &DisposeAndSetFlag);
   CHECK(!object_b.handle.IsIndependent());
   object_a.handle.MarkIndependent();
   object_b.handle.MarkIndependent();
   CHECK(object_b.handle.IsIndependent());
-  if (global_gc) {
-    CcTest::heap()->CollectAllGarbage(TestHeap::Heap::kNoGCFlags);
-  } else {
-    CcTest::heap()->CollectGarbage(i::NEW_SPACE);
-  }
-  // A single GC should be enough to reclaim the memory, since we are using
-  // phantom handles.
-  CHECK_LT(CcTest::heap()->SizeOfObjects(), big_heap_size - 200000);
+  CcTest::heap()->CollectGarbage(i::NEW_SPACE);
   CHECK(object_a.flag);
   CHECK(object_b.flag);
 }
 
 
-THREADED_TEST(IndependentWeakHandle) {
-  IndependentWeakHandle(false, false);
-  IndependentWeakHandle(false, true);
-  IndependentWeakHandle(true, false);
-  IndependentWeakHandle(true, true);
-}
-
-
 static void InvokeScavenge() {
   CcTest::heap()->CollectGarbage(i::NEW_SPACE);
 }
 
 
 static void InvokeMarkSweep() {
   CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags);
 }
 
 
@@ skipping 16468 matching lines @@
   char chunk2[] =
       "XX\xec\x92\x81r = 13;\n"
       "  return foob\xec\x92\x81\xec\x92\x81r;\n"
       "}\n";
   chunk1[strlen(chunk1) - 1] = reference[0];
   chunk2[0] = reference[1];
   chunk2[1] = reference[2];
   const char* chunks[] = {chunk1, chunk2, "foo();", NULL};
   RunStreamingTest(chunks, v8::ScriptCompiler::StreamedSource::UTF8);
 }