Merge isolates to bleeding_edge.

test/cctest/test-heap.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 
 #include <stdlib.h>
 
 #include "v8.h"
 
 #include "execution.h"
 #include "factory.h"
 #include "macro-assembler.h"
 #include "global-handles.h"
 #include "cctest.h"
 
 using namespace v8::internal;
 
 static v8::Persistent<v8::Context> env;
 
 static void InitializeVM() {
   if (env.IsEmpty()) env = v8::Context::New();
   v8::HandleScope scope;
   env->Enter();
 }
 
 
 static void CheckMap(Map* map, int type, int instance_size) {
   CHECK(map->IsHeapObject());
 #ifdef DEBUG
-  CHECK(Heap::Contains(map));
+  CHECK(HEAP->Contains(map));
 #endif
-  CHECK_EQ(Heap::meta_map(), map->map());
+  CHECK_EQ(HEAP->meta_map(), map->map());
   CHECK_EQ(type, map->instance_type());
   CHECK_EQ(instance_size, map->instance_size());
 }
 
 
 TEST(HeapMaps) {
   InitializeVM();
-  CheckMap(Heap::meta_map(), MAP_TYPE, Map::kSize);
-  CheckMap(Heap::heap_number_map(), HEAP_NUMBER_TYPE, HeapNumber::kSize);
-  CheckMap(Heap::fixed_array_map(), FIXED_ARRAY_TYPE, kVariableSizeSentinel);
-  CheckMap(Heap::string_map(), STRING_TYPE, kVariableSizeSentinel);
+  CheckMap(HEAP->meta_map(), MAP_TYPE, Map::kSize);
+  CheckMap(HEAP->heap_number_map(), HEAP_NUMBER_TYPE, HeapNumber::kSize);
+  CheckMap(HEAP->fixed_array_map(), FIXED_ARRAY_TYPE, kVariableSizeSentinel);
+  CheckMap(HEAP->string_map(), STRING_TYPE, kVariableSizeSentinel);
 }
 
 
 static void CheckOddball(Object* obj, const char* string) {
   CHECK(obj->IsOddball());
   bool exc;
   Object* print_string = *Execution::ToString(Handle<Object>(obj), &exc);
   CHECK(String::cast(print_string)->IsEqualTo(CStrVector(string)));
 }
 
 
 static void CheckSmi(int value, const char* string) {
   bool exc;
   Object* print_string =
       *Execution::ToString(Handle<Object>(Smi::FromInt(value)), &exc);
   CHECK(String::cast(print_string)->IsEqualTo(CStrVector(string)));
 }
 
 
 static void CheckNumber(double value, const char* string) {
-  Object* obj = Heap::NumberFromDouble(value)->ToObjectChecked();
+  Object* obj = HEAP->NumberFromDouble(value)->ToObjectChecked();
   CHECK(obj->IsNumber());
   bool exc;
   Object* print_string = *Execution::ToString(Handle<Object>(obj), &exc);
   CHECK(String::cast(print_string)->IsEqualTo(CStrVector(string)));
 }
 
 
 static void CheckFindCodeObject() {
   // Test FindCodeObject
 #define __ assm.
 
   Assembler assm(NULL, 0);
 
   __ nop();  // supported on all architectures
 
   CodeDesc desc;
   assm.GetCode(&desc);
-  Object* code = Heap::CreateCode(
+  Object* code = HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
-      Handle<Object>(Heap::undefined_value()))->ToObjectChecked();
+      Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
   CHECK(code->IsCode());
 
   HeapObject* obj = HeapObject::cast(code);
   Address obj_addr = obj->address();
 
   for (int i = 0; i < obj->Size(); i += kPointerSize) {
-    Object* found = Heap::FindCodeObject(obj_addr + i);
+    Object* found = HEAP->FindCodeObject(obj_addr + i);
     CHECK_EQ(code, found);
   }
 
-  Object* copy = Heap::CreateCode(
+  Object* copy = HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
-      Handle<Object>(Heap::undefined_value()))->ToObjectChecked();
+      Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
   CHECK(copy->IsCode());
   HeapObject* obj_copy = HeapObject::cast(copy);
-  Object* not_right = Heap::FindCodeObject(obj_copy->address() +
+  Object* not_right = HEAP->FindCodeObject(obj_copy->address() +
                                            obj_copy->Size() / 2);
   CHECK(not_right != code);
 }
 
 
 TEST(HeapObjects) {
   InitializeVM();
 
   v8::HandleScope sc;
-  Object* value = Heap::NumberFromDouble(1.000123)->ToObjectChecked();
+  Object* value = HEAP->NumberFromDouble(1.000123)->ToObjectChecked();
   CHECK(value->IsHeapNumber());
   CHECK(value->IsNumber());
   CHECK_EQ(1.000123, value->Number());
 
-  value = Heap::NumberFromDouble(1.0)->ToObjectChecked();
+  value = HEAP->NumberFromDouble(1.0)->ToObjectChecked();
   CHECK(value->IsSmi());
   CHECK(value->IsNumber());
   CHECK_EQ(1.0, value->Number());
 
-  value = Heap::NumberFromInt32(1024)->ToObjectChecked();
+  value = HEAP->NumberFromInt32(1024)->ToObjectChecked();
   CHECK(value->IsSmi());
   CHECK(value->IsNumber());
   CHECK_EQ(1024.0, value->Number());
 
-  value = Heap::NumberFromInt32(Smi::kMinValue)->ToObjectChecked();
+  value = HEAP->NumberFromInt32(Smi::kMinValue)->ToObjectChecked();
   CHECK(value->IsSmi());
   CHECK(value->IsNumber());
   CHECK_EQ(Smi::kMinValue, Smi::cast(value)->value());
 
-  value = Heap::NumberFromInt32(Smi::kMaxValue)->ToObjectChecked();
+  value = HEAP->NumberFromInt32(Smi::kMaxValue)->ToObjectChecked();
   CHECK(value->IsSmi());
   CHECK(value->IsNumber());
   CHECK_EQ(Smi::kMaxValue, Smi::cast(value)->value());
 
 #ifndef V8_TARGET_ARCH_X64
   // TODO(lrn): We need a NumberFromIntptr function in order to test this.
-  value = Heap::NumberFromInt32(Smi::kMinValue - 1)->ToObjectChecked();
+  value = HEAP->NumberFromInt32(Smi::kMinValue - 1)->ToObjectChecked();
   CHECK(value->IsHeapNumber());
   CHECK(value->IsNumber());
   CHECK_EQ(static_cast<double>(Smi::kMinValue - 1), value->Number());
 #endif
 
   MaybeObject* maybe_value =
-      Heap::NumberFromUint32(static_cast<uint32_t>(Smi::kMaxValue) + 1);
+      HEAP->NumberFromUint32(static_cast<uint32_t>(Smi::kMaxValue) + 1);
   value = maybe_value->ToObjectChecked();
   CHECK(value->IsHeapNumber());
   CHECK(value->IsNumber());
   CHECK_EQ(static_cast<double>(static_cast<uint32_t>(Smi::kMaxValue) + 1),
            value->Number());
 
   // nan oddball checks
-  CHECK(Heap::nan_value()->IsNumber());
-  CHECK(isnan(Heap::nan_value()->Number()));
+  CHECK(HEAP->nan_value()->IsNumber());
+  CHECK(isnan(HEAP->nan_value()->Number()));
 
-  Handle<String> s = Factory::NewStringFromAscii(CStrVector("fisk hest "));
+  Handle<String> s = FACTORY->NewStringFromAscii(CStrVector("fisk hest "));
   CHECK(s->IsString());
   CHECK_EQ(10, s->length());
 
-  String* object_symbol = String::cast(Heap::Object_symbol());
-  CHECK(Top::context()->global()->HasLocalProperty(object_symbol));
+  String* object_symbol = String::cast(HEAP->Object_symbol());
+  CHECK(
+      Isolate::Current()->context()->global()->HasLocalProperty(object_symbol));
 
   // Check ToString for oddballs
-  CheckOddball(Heap::true_value(), "true");
-  CheckOddball(Heap::false_value(), "false");
-  CheckOddball(Heap::null_value(), "null");
-  CheckOddball(Heap::undefined_value(), "undefined");
+  CheckOddball(HEAP->true_value(), "true");
+  CheckOddball(HEAP->false_value(), "false");
+  CheckOddball(HEAP->null_value(), "null");
+  CheckOddball(HEAP->undefined_value(), "undefined");
 
   // Check ToString for Smis
   CheckSmi(0, "0");
   CheckSmi(42, "42");
   CheckSmi(-42, "-42");
 
   // Check ToString for Numbers
   CheckNumber(1.1, "1.1");
 
   CheckFindCodeObject();
@@ skipping 14 matching lines @@
   CHECK(Smi::FromInt(Smi::kMinValue)->IsSmi());
   CHECK(Smi::FromInt(Smi::kMaxValue)->IsSmi());
 }
 
 
 TEST(GarbageCollection) {
   InitializeVM();
 
   v8::HandleScope sc;
   // Check GC.
-  Heap::CollectGarbage(NEW_SPACE);
+  HEAP->CollectGarbage(NEW_SPACE);
 
-  Handle<String> name = Factory::LookupAsciiSymbol("theFunction");
-  Handle<String> prop_name = Factory::LookupAsciiSymbol("theSlot");
-  Handle<String> prop_namex = Factory::LookupAsciiSymbol("theSlotx");
-  Handle<String> obj_name = Factory::LookupAsciiSymbol("theObject");
+  Handle<String> name = FACTORY->LookupAsciiSymbol("theFunction");
+  Handle<String> prop_name = FACTORY->LookupAsciiSymbol("theSlot");
+  Handle<String> prop_namex = FACTORY->LookupAsciiSymbol("theSlotx");
+  Handle<String> obj_name = FACTORY->LookupAsciiSymbol("theObject");
 
   {
     v8::HandleScope inner_scope;
     // Allocate a function and keep it in global object's property.
     Handle<JSFunction> function =
-        Factory::NewFunction(name, Factory::undefined_value());
+        FACTORY->NewFunction(name, FACTORY->undefined_value());
     Handle<Map> initial_map =
-        Factory::NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
+        FACTORY->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
     function->set_initial_map(*initial_map);
-    Top::context()->global()->SetProperty(
+    Isolate::Current()->context()->global()->SetProperty(
         *name, *function, NONE, kNonStrictMode)->ToObjectChecked();
     // Allocate an object.  Unrooted after leaving the scope.
-    Handle<JSObject> obj = Factory::NewJSObject(function);
+    Handle<JSObject> obj = FACTORY->NewJSObject(function);
     obj->SetProperty(
         *prop_name, Smi::FromInt(23), NONE, kNonStrictMode)->ToObjectChecked();
     obj->SetProperty(
         *prop_namex, Smi::FromInt(24), NONE, kNonStrictMode)->ToObjectChecked();
 
     CHECK_EQ(Smi::FromInt(23), obj->GetProperty(*prop_name));
     CHECK_EQ(Smi::FromInt(24), obj->GetProperty(*prop_namex));
   }
 
-  Heap::CollectGarbage(NEW_SPACE);
+  HEAP->CollectGarbage(NEW_SPACE);
 
   // Function should be alive.
-  CHECK(Top::context()->global()->HasLocalProperty(*name));
+  CHECK(Isolate::Current()->context()->global()->HasLocalProperty(*name));
   // Check function is retained.
-  Object* func_value =
-      Top::context()->global()->GetProperty(*name)->ToObjectChecked();
+  Object* func_value = Isolate::Current()->context()->global()->
+      GetProperty(*name)->ToObjectChecked();
   CHECK(func_value->IsJSFunction());
   Handle<JSFunction> function(JSFunction::cast(func_value));
 
   {
     HandleScope inner_scope;
     // Allocate another object, make it reachable from global.
-    Handle<JSObject> obj = Factory::NewJSObject(function);
-    Top::context()->global()->SetProperty(
+    Handle<JSObject> obj = FACTORY->NewJSObject(function);
+    Isolate::Current()->context()->global()->SetProperty(
         *obj_name, *obj, NONE, kNonStrictMode)->ToObjectChecked();
     obj->SetProperty(
         *prop_name, Smi::FromInt(23), NONE, kNonStrictMode)->ToObjectChecked();
   }
 
   // After gc, it should survive.
-  Heap::CollectGarbage(NEW_SPACE);
+  HEAP->CollectGarbage(NEW_SPACE);
 
-  CHECK(Top::context()->global()->HasLocalProperty(*obj_name));
-  CHECK(Top::context()->global()->GetProperty(*obj_name)->ToObjectChecked()->
-            IsJSObject());
-  Object* obj =
-      Top::context()->global()->GetProperty(*obj_name)->ToObjectChecked();
+  CHECK(Isolate::Current()->context()->global()->HasLocalProperty(*obj_name));
+  CHECK(Isolate::Current()->context()->global()->
+        GetProperty(*obj_name)->ToObjectChecked()->IsJSObject());
+  Object* obj = Isolate::Current()->context()->global()->
+      GetProperty(*obj_name)->ToObjectChecked();
   JSObject* js_obj = JSObject::cast(obj);
   CHECK_EQ(Smi::FromInt(23), js_obj->GetProperty(*prop_name));
 }
 
 
 static void VerifyStringAllocation(const char* string) {
   v8::HandleScope scope;
-  Handle<String> s = Factory::NewStringFromUtf8(CStrVector(string));
+  Handle<String> s = FACTORY->NewStringFromUtf8(CStrVector(string));
   CHECK_EQ(StrLength(string), s->length());
   for (int index = 0; index < s->length(); index++) {
     CHECK_EQ(static_cast<uint16_t>(string[index]), s->Get(index));
   }
 }
 
 
 TEST(String) {
   InitializeVM();
 
   VerifyStringAllocation("a");
   VerifyStringAllocation("ab");
   VerifyStringAllocation("abc");
   VerifyStringAllocation("abcd");
   VerifyStringAllocation("fiskerdrengen er paa havet");
 }
 
 
 TEST(LocalHandles) {
   InitializeVM();
 
   v8::HandleScope scope;
   const char* name = "Kasper the spunky";
-  Handle<String> string = Factory::NewStringFromAscii(CStrVector(name));
+  Handle<String> string = FACTORY->NewStringFromAscii(CStrVector(name));
   CHECK_EQ(StrLength(name), string->length());
 }
 
 
 TEST(GlobalHandles) {
+  GlobalHandles* global_handles = Isolate::Current()->global_handles();
   InitializeVM();
 
   Handle<Object> h1;
   Handle<Object> h2;
   Handle<Object> h3;
   Handle<Object> h4;
 
   {
     HandleScope scope;
 
-    Handle<Object> i = Factory::NewStringFromAscii(CStrVector("fisk"));
-    Handle<Object> u = Factory::NewNumber(1.12344);
+    Handle<Object> i = FACTORY->NewStringFromAscii(CStrVector("fisk"));
+    Handle<Object> u = FACTORY->NewNumber(1.12344);
 
-    h1 = GlobalHandles::Create(*i);
-    h2 = GlobalHandles::Create(*u);
-    h3 = GlobalHandles::Create(*i);
-    h4 = GlobalHandles::Create(*u);
+    h1 = global_handles->Create(*i);
+    h2 = global_handles->Create(*u);
+    h3 = global_handles->Create(*i);
+    h4 = global_handles->Create(*u);
   }
 
   // after gc, it should survive
-  Heap::CollectGarbage(NEW_SPACE);
+  HEAP->CollectGarbage(NEW_SPACE);
 
   CHECK((*h1)->IsString());
   CHECK((*h2)->IsHeapNumber());
   CHECK((*h3)->IsString());
   CHECK((*h4)->IsHeapNumber());
 
   CHECK_EQ(*h3, *h1);
-  GlobalHandles::Destroy(h1.location());
-  GlobalHandles::Destroy(h3.location());
+  global_handles->Destroy(h1.location());
+  global_handles->Destroy(h3.location());
 
   CHECK_EQ(*h4, *h2);
-  GlobalHandles::Destroy(h2.location());
-  GlobalHandles::Destroy(h4.location());
+  global_handles->Destroy(h2.location());
+  global_handles->Destroy(h4.location());
 }
 
 
 static bool WeakPointerCleared = false;
 
 static void TestWeakGlobalHandleCallback(v8::Persistent<v8::Value> handle,
                                          void* id) {
   if (1234 == reinterpret_cast<intptr_t>(id)) WeakPointerCleared = true;
   handle.Dispose();
 }
 
 
 TEST(WeakGlobalHandlesScavenge) {
+  GlobalHandles* global_handles = Isolate::Current()->global_handles();
   InitializeVM();
 
   WeakPointerCleared = false;
 
   Handle<Object> h1;
   Handle<Object> h2;
 
   {
     HandleScope scope;
 
-    Handle<Object> i = Factory::NewStringFromAscii(CStrVector("fisk"));
-    Handle<Object> u = Factory::NewNumber(1.12344);
+    Handle<Object> i = FACTORY->NewStringFromAscii(CStrVector("fisk"));
+    Handle<Object> u = FACTORY->NewNumber(1.12344);
 
-    h1 = GlobalHandles::Create(*i);
-    h2 = GlobalHandles::Create(*u);
+    h1 = global_handles->Create(*i);
+    h2 = global_handles->Create(*u);
   }
 
-  GlobalHandles::MakeWeak(h2.location(),
-                          reinterpret_cast<void*>(1234),
-                          &TestWeakGlobalHandleCallback);
+  global_handles->MakeWeak(h2.location(),
+                           reinterpret_cast<void*>(1234),
+                           &TestWeakGlobalHandleCallback);
 
   // Scavenge treats weak pointers as normal roots.
-  Heap::PerformScavenge();
+  HEAP->PerformScavenge();
 
   CHECK((*h1)->IsString());
   CHECK((*h2)->IsHeapNumber());
 
   CHECK(!WeakPointerCleared);
-  CHECK(!GlobalHandles::IsNearDeath(h2.location()));
-  CHECK(!GlobalHandles::IsNearDeath(h1.location()));
+  CHECK(!global_handles->IsNearDeath(h2.location()));
+  CHECK(!global_handles->IsNearDeath(h1.location()));
 
-  GlobalHandles::Destroy(h1.location());
-  GlobalHandles::Destroy(h2.location());
+  global_handles->Destroy(h1.location());
+  global_handles->Destroy(h2.location());
 }
 
 
 TEST(WeakGlobalHandlesMark) {
+  GlobalHandles* global_handles = Isolate::Current()->global_handles();
   InitializeVM();
 
   WeakPointerCleared = false;
 
   Handle<Object> h1;
   Handle<Object> h2;
 
   {
     HandleScope scope;
 
-    Handle<Object> i = Factory::NewStringFromAscii(CStrVector("fisk"));
-    Handle<Object> u = Factory::NewNumber(1.12344);
+    Handle<Object> i = FACTORY->NewStringFromAscii(CStrVector("fisk"));
+    Handle<Object> u = FACTORY->NewNumber(1.12344);
 
-    h1 = GlobalHandles::Create(*i);
-    h2 = GlobalHandles::Create(*u);
+    h1 = global_handles->Create(*i);
+    h2 = global_handles->Create(*u);
   }
 
-  Heap::CollectGarbage(OLD_POINTER_SPACE);
-  Heap::CollectGarbage(NEW_SPACE);
+  HEAP->CollectGarbage(OLD_POINTER_SPACE);
+  HEAP->CollectGarbage(NEW_SPACE);
   // Make sure the object is promoted.
 
-  GlobalHandles::MakeWeak(h2.location(),
-                          reinterpret_cast<void*>(1234),
-                          &TestWeakGlobalHandleCallback);
+  global_handles->MakeWeak(h2.location(),
+                           reinterpret_cast<void*>(1234),
+                           &TestWeakGlobalHandleCallback);
   CHECK(!GlobalHandles::IsNearDeath(h1.location()));
   CHECK(!GlobalHandles::IsNearDeath(h2.location()));
 
-  Heap::CollectGarbage(OLD_POINTER_SPACE);
+  HEAP->CollectGarbage(OLD_POINTER_SPACE);
 
   CHECK((*h1)->IsString());
 
   CHECK(WeakPointerCleared);
   CHECK(!GlobalHandles::IsNearDeath(h1.location()));
 
-  GlobalHandles::Destroy(h1.location());
+  global_handles->Destroy(h1.location());
 }
 
 TEST(DeleteWeakGlobalHandle) {
+  GlobalHandles* global_handles = Isolate::Current()->global_handles();
   InitializeVM();
 
   WeakPointerCleared = false;
 
   Handle<Object> h;
 
   {
     HandleScope scope;
 
-    Handle<Object> i = Factory::NewStringFromAscii(CStrVector("fisk"));
-    h = GlobalHandles::Create(*i);
+    Handle<Object> i = FACTORY->NewStringFromAscii(CStrVector("fisk"));
+    h = global_handles->Create(*i);
   }
 
-  GlobalHandles::MakeWeak(h.location(),
-                          reinterpret_cast<void*>(1234),
-                          &TestWeakGlobalHandleCallback);
+  global_handles->MakeWeak(h.location(),
+                           reinterpret_cast<void*>(1234),
+                           &TestWeakGlobalHandleCallback);
 
   // Scanvenge does not recognize weak reference.
-  Heap::PerformScavenge();
+  HEAP->PerformScavenge();
 
   CHECK(!WeakPointerCleared);
 
   // Mark-compact treats weak reference properly.
-  Heap::CollectGarbage(OLD_POINTER_SPACE);
+  HEAP->CollectGarbage(OLD_POINTER_SPACE);
 
   CHECK(WeakPointerCleared);
 }
 
 static const char* not_so_random_string_table[] = {
   "abstract",
   "boolean",
   "break",
   "byte",
   "case",
@@ skipping 51 matching lines @@
   "volatile",
   "while",
   "with",
   0
 };
 
 
 static void CheckSymbols(const char** strings) {
   for (const char* string = *strings; *strings != 0; string = *strings++) {
     Object* a;
-    MaybeObject* maybe_a = Heap::LookupAsciiSymbol(string);
+    MaybeObject* maybe_a = HEAP->LookupAsciiSymbol(string);
     // LookupAsciiSymbol may return a failure if a GC is needed.
     if (!maybe_a->ToObject(&a)) continue;
     CHECK(a->IsSymbol());
     Object* b;
-    MaybeObject *maybe_b = Heap::LookupAsciiSymbol(string);
+    MaybeObject* maybe_b = HEAP->LookupAsciiSymbol(string);
     if (!maybe_b->ToObject(&b)) continue;
     CHECK_EQ(b, a);
     CHECK(String::cast(b)->IsEqualTo(CStrVector(string)));
   }
 }
 
 
 TEST(SymbolTable) {
   InitializeVM();
 
   CheckSymbols(not_so_random_string_table);
   CheckSymbols(not_so_random_string_table);
 }
 
 
 TEST(FunctionAllocation) {
   InitializeVM();
 
   v8::HandleScope sc;
-  Handle<String> name = Factory::LookupAsciiSymbol("theFunction");
+  Handle<String> name = FACTORY->LookupAsciiSymbol("theFunction");
   Handle<JSFunction> function =
-      Factory::NewFunction(name, Factory::undefined_value());
+      FACTORY->NewFunction(name, FACTORY->undefined_value());
   Handle<Map> initial_map =
-      Factory::NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
+      FACTORY->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
   function->set_initial_map(*initial_map);
 
-  Handle<String> prop_name = Factory::LookupAsciiSymbol("theSlot");
-  Handle<JSObject> obj = Factory::NewJSObject(function);
+  Handle<String> prop_name = FACTORY->LookupAsciiSymbol("theSlot");
+  Handle<JSObject> obj = FACTORY->NewJSObject(function);
   obj->SetProperty(
       *prop_name, Smi::FromInt(23), NONE, kNonStrictMode)->ToObjectChecked();
   CHECK_EQ(Smi::FromInt(23), obj->GetProperty(*prop_name));
   // Check that we can add properties to function objects.
   function->SetProperty(
       *prop_name, Smi::FromInt(24), NONE, kNonStrictMode)->ToObjectChecked();
   CHECK_EQ(Smi::FromInt(24), function->GetProperty(*prop_name));
 }
 
 
 TEST(ObjectProperties) {
   InitializeVM();
 
   v8::HandleScope sc;
-  String* object_symbol = String::cast(Heap::Object_symbol());
-  Object* raw_object =
-      Top::context()->global()->GetProperty(object_symbol)->ToObjectChecked();
+  String* object_symbol = String::cast(HEAP->Object_symbol());
+  Object* raw_object = Isolate::Current()->context()->global()->
+      GetProperty(object_symbol)->ToObjectChecked();
   JSFunction* object_function = JSFunction::cast(raw_object);
   Handle<JSFunction> constructor(object_function);
-  Handle<JSObject> obj = Factory::NewJSObject(constructor);
-  Handle<String> first = Factory::LookupAsciiSymbol("first");
-  Handle<String> second = Factory::LookupAsciiSymbol("second");
+  Handle<JSObject> obj = FACTORY->NewJSObject(constructor);
+  Handle<String> first = FACTORY->LookupAsciiSymbol("first");
+  Handle<String> second = FACTORY->LookupAsciiSymbol("second");
 
   // check for empty
   CHECK(!obj->HasLocalProperty(*first));
 
   // add first
   obj->SetProperty(
       *first, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
   CHECK(obj->HasLocalProperty(*first));
 
   // delete first
@@ skipping 25 matching lines @@
 
   // delete second and then first
   CHECK(obj->DeleteProperty(*second, JSObject::NORMAL_DELETION));
   CHECK(obj->HasLocalProperty(*first));
   CHECK(obj->DeleteProperty(*first, JSObject::NORMAL_DELETION));
   CHECK(!obj->HasLocalProperty(*first));
   CHECK(!obj->HasLocalProperty(*second));
 
   // check string and symbol match
   static const char* string1 = "fisk";
-  Handle<String> s1 = Factory::NewStringFromAscii(CStrVector(string1));
+  Handle<String> s1 = FACTORY->NewStringFromAscii(CStrVector(string1));
   obj->SetProperty(
       *s1, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
-  Handle<String> s1_symbol = Factory::LookupAsciiSymbol(string1);
+  Handle<String> s1_symbol = FACTORY->LookupAsciiSymbol(string1);
   CHECK(obj->HasLocalProperty(*s1_symbol));
 
   // check symbol and string match
   static const char* string2 = "fugl";
-  Handle<String> s2_symbol = Factory::LookupAsciiSymbol(string2);
+  Handle<String> s2_symbol = FACTORY->LookupAsciiSymbol(string2);
   obj->SetProperty(
       *s2_symbol, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
-  Handle<String> s2 = Factory::NewStringFromAscii(CStrVector(string2));
+  Handle<String> s2 = FACTORY->NewStringFromAscii(CStrVector(string2));
   CHECK(obj->HasLocalProperty(*s2));
 }
 
 
 TEST(JSObjectMaps) {
   InitializeVM();
 
   v8::HandleScope sc;
-  Handle<String> name = Factory::LookupAsciiSymbol("theFunction");
+  Handle<String> name = FACTORY->LookupAsciiSymbol("theFunction");
   Handle<JSFunction> function =
-      Factory::NewFunction(name, Factory::undefined_value());
+      FACTORY->NewFunction(name, FACTORY->undefined_value());
   Handle<Map> initial_map =
-      Factory::NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
+      FACTORY->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
   function->set_initial_map(*initial_map);
 
-  Handle<String> prop_name = Factory::LookupAsciiSymbol("theSlot");
-  Handle<JSObject> obj = Factory::NewJSObject(function);
+  Handle<String> prop_name = FACTORY->LookupAsciiSymbol("theSlot");
+  Handle<JSObject> obj = FACTORY->NewJSObject(function);
 
   // Set a propery
   obj->SetProperty(
       *prop_name, Smi::FromInt(23), NONE, kNonStrictMode)->ToObjectChecked();
   CHECK_EQ(Smi::FromInt(23), obj->GetProperty(*prop_name));
 
   // Check the map has changed
   CHECK(*initial_map != obj->map());
 }
 
 
 TEST(JSArray) {
   InitializeVM();
 
   v8::HandleScope sc;
-  Handle<String> name = Factory::LookupAsciiSymbol("Array");
-  Object* raw_object =
-      Top::context()->global()->GetProperty(*name)->ToObjectChecked();
+  Handle<String> name = FACTORY->LookupAsciiSymbol("Array");
+  Object* raw_object = Isolate::Current()->context()->global()->
+      GetProperty(*name)->ToObjectChecked();
   Handle<JSFunction> function = Handle<JSFunction>(
       JSFunction::cast(raw_object));
 
   // Allocate the object.
-  Handle<JSObject> object = Factory::NewJSObject(function);
+  Handle<JSObject> object = FACTORY->NewJSObject(function);
   Handle<JSArray> array = Handle<JSArray>::cast(object);
   // We just initialized the VM, no heap allocation failure yet.
   Object* ok = array->Initialize(0)->ToObjectChecked();
 
   // Set array length to 0.
   ok = array->SetElementsLength(Smi::FromInt(0))->ToObjectChecked();
   CHECK_EQ(Smi::FromInt(0), array->length());
   CHECK(array->HasFastElements());  // Must be in fast mode.
 
   // array[length] = name.
   ok = array->SetElement(0, *name, kNonStrictMode)->ToObjectChecked();
   CHECK_EQ(Smi::FromInt(1), array->length());
   CHECK_EQ(array->GetElement(0), *name);
 
   // Set array length with larger than smi value.
   Handle<Object> length =
-      Factory::NewNumberFromUint(static_cast<uint32_t>(Smi::kMaxValue) + 1);
+      FACTORY->NewNumberFromUint(static_cast<uint32_t>(Smi::kMaxValue) + 1);
   ok = array->SetElementsLength(*length)->ToObjectChecked();
 
   uint32_t int_length = 0;
   CHECK(length->ToArrayIndex(&int_length));
   CHECK_EQ(*length, array->length());
   CHECK(array->HasDictionaryElements());  // Must be in slow mode.
 
   // array[length] = name.
   ok = array->SetElement(int_length, *name, kNonStrictMode)->ToObjectChecked();
   uint32_t new_int_length = 0;
   CHECK(array->length()->ToArrayIndex(&new_int_length));
   CHECK_EQ(static_cast<double>(int_length), new_int_length - 1);
   CHECK_EQ(array->GetElement(int_length), *name);
   CHECK_EQ(array->GetElement(0), *name);
 }
 
 
 TEST(JSObjectCopy) {
   InitializeVM();
 
   v8::HandleScope sc;
-  String* object_symbol = String::cast(Heap::Object_symbol());
-  Object* raw_object =
-      Top::context()->global()->GetProperty(object_symbol)->ToObjectChecked();
+  String* object_symbol = String::cast(HEAP->Object_symbol());
+  Object* raw_object = Isolate::Current()->context()->global()->
+      GetProperty(object_symbol)->ToObjectChecked();
   JSFunction* object_function = JSFunction::cast(raw_object);
   Handle<JSFunction> constructor(object_function);
-  Handle<JSObject> obj = Factory::NewJSObject(constructor);
-  Handle<String> first = Factory::LookupAsciiSymbol("first");
-  Handle<String> second = Factory::LookupAsciiSymbol("second");
+  Handle<JSObject> obj = FACTORY->NewJSObject(constructor);
+  Handle<String> first = FACTORY->LookupAsciiSymbol("first");
+  Handle<String> second = FACTORY->LookupAsciiSymbol("second");
 
   obj->SetProperty(
       *first, Smi::FromInt(1), NONE, kNonStrictMode)->ToObjectChecked();
   obj->SetProperty(
       *second, Smi::FromInt(2), NONE, kNonStrictMode)->ToObjectChecked();
 
   Object* ok = obj->SetElement(0, *first, kNonStrictMode)->ToObjectChecked();
 
   ok = obj->SetElement(1, *second, kNonStrictMode)->ToObjectChecked();
 
@@ skipping 35 matching lines @@
     char* ascii = NewArray<char>(length + 1);
     non_ascii[3 * length] = 0;
     ascii[length] = 0;
     for (int i = 0; i < length; i++) {
       ascii[i] = 'a';
       non_ascii[3 * i] = chars[0];
       non_ascii[3 * i + 1] = chars[1];
       non_ascii[3 * i + 2] = chars[2];
     }
     Handle<String> non_ascii_sym =
-        Factory::LookupSymbol(Vector<const char>(non_ascii, 3 * length));
+        FACTORY->LookupSymbol(Vector<const char>(non_ascii, 3 * length));
     CHECK_EQ(length, non_ascii_sym->length());
     Handle<String> ascii_sym =
-        Factory::LookupSymbol(Vector<const char>(ascii, length));
+        FACTORY->LookupSymbol(Vector<const char>(ascii, length));
     CHECK_EQ(length, ascii_sym->length());
     Handle<String> non_ascii_str =
-        Factory::NewStringFromUtf8(Vector<const char>(non_ascii, 3 * length));
+        FACTORY->NewStringFromUtf8(Vector<const char>(non_ascii, 3 * length));
     non_ascii_str->Hash();
     CHECK_EQ(length, non_ascii_str->length());
     Handle<String> ascii_str =
-        Factory::NewStringFromUtf8(Vector<const char>(ascii, length));
+        FACTORY->NewStringFromUtf8(Vector<const char>(ascii, length));
     ascii_str->Hash();
     CHECK_EQ(length, ascii_str->length());
     DeleteArray(non_ascii);
     DeleteArray(ascii);
   }
 }
 
 
 static int ObjectsFoundInHeap(Handle<Object> objs[], int size) {
   // Count the number of objects found in the heap.
@@ skipping 13 matching lines @@
 TEST(Iteration) {
   InitializeVM();
   v8::HandleScope scope;
 
   // Array of objects to scan haep for.
   const int objs_count = 6;
   Handle<Object> objs[objs_count];
   int next_objs_index = 0;
 
   // Allocate a JS array to OLD_POINTER_SPACE and NEW_SPACE
-  objs[next_objs_index++] = Factory::NewJSArray(10);
-  objs[next_objs_index++] = Factory::NewJSArray(10, TENURED);
+  objs[next_objs_index++] = FACTORY->NewJSArray(10);
+  objs[next_objs_index++] = FACTORY->NewJSArray(10, TENURED);
 
   // Allocate a small string to OLD_DATA_SPACE and NEW_SPACE
   objs[next_objs_index++] =
-      Factory::NewStringFromAscii(CStrVector("abcdefghij"));
+      FACTORY->NewStringFromAscii(CStrVector("abcdefghij"));
   objs[next_objs_index++] =
-      Factory::NewStringFromAscii(CStrVector("abcdefghij"), TENURED);
+      FACTORY->NewStringFromAscii(CStrVector("abcdefghij"), TENURED);
 
   // Allocate a large string (for large object space).
-  int large_size = Heap::MaxObjectSizeInPagedSpace() + 1;
+  int large_size = HEAP->MaxObjectSizeInPagedSpace() + 1;
   char* str = new char[large_size];
   for (int i = 0; i < large_size - 1; ++i) str[i] = 'a';
   str[large_size - 1] = '\0';
   objs[next_objs_index++] =
-      Factory::NewStringFromAscii(CStrVector(str), TENURED);
+      FACTORY->NewStringFromAscii(CStrVector(str), TENURED);
   delete[] str;
 
   // Add a Map object to look for.
   objs[next_objs_index++] = Handle<Map>(HeapObject::cast(*objs[0])->map());
 
   CHECK_EQ(objs_count, next_objs_index);
   CHECK_EQ(objs_count, ObjectsFoundInHeap(objs, objs_count));
 }
 
 
 TEST(LargeObjectSpaceContains) {
   InitializeVM();
 
-  Heap::CollectGarbage(NEW_SPACE);
+  HEAP->CollectGarbage(NEW_SPACE);
 
-  Address current_top = Heap::new_space()->top();
+  Address current_top = HEAP->new_space()->top();
   Page* page = Page::FromAddress(current_top);
   Address current_page = page->address();
   Address next_page = current_page + Page::kPageSize;
   int bytes_to_page = static_cast<int>(next_page - current_top);
   if (bytes_to_page <= FixedArray::kHeaderSize) {
     // Alas, need to cross another page to be able to
     // put desired value.
     next_page += Page::kPageSize;
     bytes_to_page = static_cast<int>(next_page - current_top);
   }
   CHECK(bytes_to_page > FixedArray::kHeaderSize);
 
   intptr_t* flags_ptr = &Page::FromAddress(next_page)->flags_;
   Address flags_addr = reinterpret_cast<Address>(flags_ptr);
 
   int bytes_to_allocate =
       static_cast<int>(flags_addr - current_top) + kPointerSize;
 
   int n_elements = (bytes_to_allocate - FixedArray::kHeaderSize) /
       kPointerSize;
   CHECK_EQ(bytes_to_allocate, FixedArray::SizeFor(n_elements));
   FixedArray* array = FixedArray::cast(
-      Heap::AllocateFixedArray(n_elements)->ToObjectChecked());
+      HEAP->AllocateFixedArray(n_elements)->ToObjectChecked());
 
   int index = n_elements - 1;
   CHECK_EQ(flags_ptr,
            HeapObject::RawField(array, FixedArray::OffsetOfElementAt(index)));
   array->set(index, Smi::FromInt(0));
   // This chould have turned next page into LargeObjectPage:
   // CHECK(Page::FromAddress(next_page)->IsLargeObjectPage());
 
   HeapObject* addr = HeapObject::FromAddress(next_page + 2 * kPointerSize);
-  CHECK(Heap::new_space()->Contains(addr));
-  CHECK(!Heap::lo_space()->Contains(addr));
+  CHECK(HEAP->new_space()->Contains(addr));
+  CHECK(!HEAP->lo_space()->Contains(addr));
 }
 
 
 TEST(EmptyHandleEscapeFrom) {
   InitializeVM();
 
   v8::HandleScope scope;
   Handle<JSObject> runaway;
 
   {
@@ skipping 10 matching lines @@
   return (size - FixedArray::kHeaderSize) / kPointerSize;
 }
 
 
 TEST(Regression39128) {
   // Test case for crbug.com/39128.
   InitializeVM();
 
   // Increase the chance of 'bump-the-pointer' allocation in old space.
   bool force_compaction = true;
-  Heap::CollectAllGarbage(force_compaction);
+  HEAP->CollectAllGarbage(force_compaction);
 
   v8::HandleScope scope;
 
   // The plan: create JSObject which references objects in new space.
   // Then clone this object (forcing it to go into old space) and check
   // that region dirty marks are updated correctly.
 
   // Step 1: prepare a map for the object.  We add 1 inobject property to it.
-  Handle<JSFunction> object_ctor(Top::global_context()->object_function());
+  Handle<JSFunction> object_ctor(
+      Isolate::Current()->global_context()->object_function());
   CHECK(object_ctor->has_initial_map());
   Handle<Map> object_map(object_ctor->initial_map());
   // Create a map with single inobject property.
-  Handle<Map> my_map = Factory::CopyMap(object_map, 1);
+  Handle<Map> my_map = FACTORY->CopyMap(object_map, 1);
   int n_properties = my_map->inobject_properties();
   CHECK_GT(n_properties, 0);
 
   int object_size = my_map->instance_size();
 
   // Step 2: allocate a lot of objects so to almost fill new space: we need
   // just enough room to allocate JSObject and thus fill the newspace.
 
   int allocation_amount = Min(FixedArray::kMaxSize,
-                              Heap::MaxObjectSizeInNewSpace());
+                              HEAP->MaxObjectSizeInNewSpace());
   int allocation_len = LenFromSize(allocation_amount);
-  NewSpace* new_space = Heap::new_space();
+  NewSpace* new_space = HEAP->new_space();
   Address* top_addr = new_space->allocation_top_address();
   Address* limit_addr = new_space->allocation_limit_address();
   while ((*limit_addr - *top_addr) > allocation_amount) {
-    CHECK(!Heap::always_allocate());
-    Object* array =
-        Heap::AllocateFixedArray(allocation_len)->ToObjectChecked();
+    CHECK(!HEAP->always_allocate());
+    Object* array = HEAP->AllocateFixedArray(allocation_len)->ToObjectChecked();
+    CHECK(!array->IsFailure());
     CHECK(new_space->Contains(array));
   }
 
   // Step 3: now allocate fixed array and JSObject to fill the whole new space.
   int to_fill = static_cast<int>(*limit_addr - *top_addr - object_size);
   int fixed_array_len = LenFromSize(to_fill);
   CHECK(fixed_array_len < FixedArray::kMaxLength);
 
-  CHECK(!Heap::always_allocate());
-  Object* array =
-      Heap::AllocateFixedArray(fixed_array_len)->ToObjectChecked();
+  CHECK(!HEAP->always_allocate());
+  Object* array = HEAP->AllocateFixedArray(fixed_array_len)->ToObjectChecked();
+  CHECK(!array->IsFailure());
   CHECK(new_space->Contains(array));
 
-  Object* object = Heap::AllocateJSObjectFromMap(*my_map)->ToObjectChecked();
+  Object* object = HEAP->AllocateJSObjectFromMap(*my_map)->ToObjectChecked();
   CHECK(new_space->Contains(object));
   JSObject* jsobject = JSObject::cast(object);
   CHECK_EQ(0, FixedArray::cast(jsobject->elements())->length());
   CHECK_EQ(0, jsobject->properties()->length());
   // Create a reference to object in new space in jsobject.
   jsobject->FastPropertyAtPut(-1, array);
 
   CHECK_EQ(0, static_cast<int>(*limit_addr - *top_addr));
 
   // Step 4: clone jsobject, but force always allocate first to create a clone
   // in old pointer space.
-  Address old_pointer_space_top = Heap::old_pointer_space()->top();
+  Address old_pointer_space_top = HEAP->old_pointer_space()->top();
   AlwaysAllocateScope aa_scope;
-  Object* clone_obj = Heap::CopyJSObject(jsobject)->ToObjectChecked();
+  Object* clone_obj = HEAP->CopyJSObject(jsobject)->ToObjectChecked();
   JSObject* clone = JSObject::cast(clone_obj);
   if (clone->address() != old_pointer_space_top) {
     // Alas, got allocated from free list, we cannot do checks.
     return;
   }
-  CHECK(Heap::old_pointer_space()->Contains(clone->address()));
+  CHECK(HEAP->old_pointer_space()->Contains(clone->address()));
 
   // Step 5: verify validity of region dirty marks.
   Address clone_addr = clone->address();
   Page* page = Page::FromAddress(clone_addr);
   // Check that region covering inobject property 1 is marked dirty.
   CHECK(page->IsRegionDirty(clone_addr + (object_size - kPointerSize)));
 }
 
 
 TEST(TestCodeFlushing) {
   i::FLAG_allow_natives_syntax = true;
   // If we do not flush code this test is invalid.
   if (!FLAG_flush_code) return;
   InitializeVM();
   v8::HandleScope scope;
   const char* source = "function foo() {"
                        "  var x = 42;"
                        "  var y = 42;"
                        "  var z = x + y;"
                        "};"
                        "foo()";
-  Handle<String> foo_name = Factory::LookupAsciiSymbol("foo");
+  Handle<String> foo_name = FACTORY->LookupAsciiSymbol("foo");
 
   // This compile will add the code to the compilation cache.
   { v8::HandleScope scope;
     CompileRun(source);
   }
 
   // Check function is compiled.
-  Object* func_value =
-      Top::context()->global()->GetProperty(*foo_name)->ToObjectChecked();
+  Object* func_value = Isolate::Current()->context()->global()->
+      GetProperty(*foo_name)->ToObjectChecked();
   CHECK(func_value->IsJSFunction());
   Handle<JSFunction> function(JSFunction::cast(func_value));
   CHECK(function->shared()->is_compiled());
 
-  Heap::CollectAllGarbage(true);
-  Heap::CollectAllGarbage(true);
+  HEAP->CollectAllGarbage(true);
+  HEAP->CollectAllGarbage(true);
 
   CHECK(function->shared()->is_compiled());
 
-  Heap::CollectAllGarbage(true);
-  Heap::CollectAllGarbage(true);
-  Heap::CollectAllGarbage(true);
-  Heap::CollectAllGarbage(true);
-  Heap::CollectAllGarbage(true);
-  Heap::CollectAllGarbage(true);
+  HEAP->CollectAllGarbage(true);
+  HEAP->CollectAllGarbage(true);
+  HEAP->CollectAllGarbage(true);
+  HEAP->CollectAllGarbage(true);
+  HEAP->CollectAllGarbage(true);
+  HEAP->CollectAllGarbage(true);
 
   // foo should no longer be in the compilation cache
   CHECK(!function->shared()->is_compiled() || function->IsOptimized());
   CHECK(!function->is_compiled() || function->IsOptimized());
   // Call foo to get it recompiled.
   CompileRun("foo()");
   CHECK(function->shared()->is_compiled());
   CHECK(function->is_compiled());
 }
 
 
 // Count the number of global contexts in the weak list of global contexts.
 static int CountGlobalContexts() {
   int count = 0;
-  Object* object = Heap::global_contexts_list();
+  Object* object = HEAP->global_contexts_list();
   while (!object->IsUndefined()) {
     count++;
     object = Context::cast(object)->get(Context::NEXT_CONTEXT_LINK);
   }
   return count;
 }
 
 
 // Count the number of user functions in the weak list of optimized
 // functions attached to a global context.
 static int CountOptimizedUserFunctions(v8::Handle<v8::Context> context) {
   int count = 0;
   Handle<Context> icontext = v8::Utils::OpenHandle(*context);
   Object* object = icontext->get(Context::OPTIMIZED_FUNCTIONS_LIST);
   while (object->IsJSFunction() && !JSFunction::cast(object)->IsBuiltin()) {
     count++;
     object = JSFunction::cast(object)->next_function_link();
   }
   return count;
 }
 
 
 TEST(TestInternalWeakLists) {
+  v8::V8::Initialize();
+
   static const int kNumTestContexts = 10;
 
   v8::HandleScope scope;
   v8::Persistent<v8::Context> ctx[kNumTestContexts];
 
   CHECK_EQ(0, CountGlobalContexts());
 
   // Create a number of global contests which gets linked together.
   for (int i = 0; i < kNumTestContexts; i++) {
     ctx[i] = v8::Context::New();
@@ skipping 23 matching lines @@
     CompileRun("f4()");
     CHECK_EQ(opt ? 4 : 0, CountOptimizedUserFunctions(ctx[i]));
     CompileRun("f5()");
     CHECK_EQ(opt ? 5 : 0, CountOptimizedUserFunctions(ctx[i]));
 
     // Remove function f1, and
     CompileRun("f1=null");
 
     // Scavenge treats these references as strong.
     for (int j = 0; j < 10; j++) {
-      Heap::PerformScavenge();
+      HEAP->PerformScavenge();
       CHECK_EQ(opt ? 5 : 0, CountOptimizedUserFunctions(ctx[i]));
     }
 
     // Mark compact handles the weak references.
-    Heap::CollectAllGarbage(true);
+    HEAP->CollectAllGarbage(true);
     CHECK_EQ(opt ? 4 : 0, CountOptimizedUserFunctions(ctx[i]));
 
     // Get rid of f3 and f5 in the same way.
     CompileRun("f3=null");
     for (int j = 0; j < 10; j++) {
-      Heap::PerformScavenge();
+      HEAP->PerformScavenge();
       CHECK_EQ(opt ? 4 : 0, CountOptimizedUserFunctions(ctx[i]));
     }
-    Heap::CollectAllGarbage(true);
+    HEAP->CollectAllGarbage(true);
     CHECK_EQ(opt ? 3 : 0, CountOptimizedUserFunctions(ctx[i]));
     CompileRun("f5=null");
     for (int j = 0; j < 10; j++) {
-      Heap::PerformScavenge();
+      HEAP->PerformScavenge();
       CHECK_EQ(opt ? 3 : 0, CountOptimizedUserFunctions(ctx[i]));
     }
-    Heap::CollectAllGarbage(true);
+    HEAP->CollectAllGarbage(true);
     CHECK_EQ(opt ? 2 : 0, CountOptimizedUserFunctions(ctx[i]));
 
     ctx[i]->Exit();
   }
 
   // Force compilation cache cleanup.
-  Heap::CollectAllGarbage(true);
+  HEAP->CollectAllGarbage(true);
 
   // Dispose the global contexts one by one.
   for (int i = 0; i < kNumTestContexts; i++) {
     ctx[i].Dispose();
     ctx[i].Clear();
 
     // Scavenge treats these references as strong.
     for (int j = 0; j < 10; j++) {
-      Heap::PerformScavenge();
+      HEAP->PerformScavenge();
       CHECK_EQ(kNumTestContexts - i, CountGlobalContexts());
     }
 
     // Mark compact handles the weak references.
-    Heap::CollectAllGarbage(true);
+    HEAP->CollectAllGarbage(true);
     CHECK_EQ(kNumTestContexts - i - 1, CountGlobalContexts());
   }
 
   CHECK_EQ(0, CountGlobalContexts());
 }
 
 
 // Count the number of global contexts in the weak list of global contexts
 // causing a GC after the specified number of elements.
 static int CountGlobalContextsWithGC(int n) {
   int count = 0;
-  Handle<Object> object(Heap::global_contexts_list());
+  Handle<Object> object(HEAP->global_contexts_list());
   while (!object->IsUndefined()) {
     count++;
-    if (count == n) Heap::CollectAllGarbage(true);
+    if (count == n) HEAP->CollectAllGarbage(true);
     object =
         Handle<Object>(Context::cast(*object)->get(Context::NEXT_CONTEXT_LINK));
   }
   return count;
 }
 
 
 // Count the number of user functions in the weak list of optimized
 // functions attached to a global context causing a GC after the
 // specified number of elements.
 static int CountOptimizedUserFunctionsWithGC(v8::Handle<v8::Context> context,
                                              int n) {
   int count = 0;
   Handle<Context> icontext = v8::Utils::OpenHandle(*context);
   Handle<Object> object(icontext->get(Context::OPTIMIZED_FUNCTIONS_LIST));
   while (object->IsJSFunction() &&
          !Handle<JSFunction>::cast(object)->IsBuiltin()) {
     count++;
-    if (count == n) Heap::CollectAllGarbage(true);
+    if (count == n) HEAP->CollectAllGarbage(true);
     object = Handle<Object>(
         Object::cast(JSFunction::cast(*object)->next_function_link()));
   }
   return count;
 }
 
 
 TEST(TestInternalWeakListsTraverseWithGC) {
+  v8::V8::Initialize();
+
   static const int kNumTestContexts = 10;
 
   v8::HandleScope scope;
   v8::Persistent<v8::Context> ctx[kNumTestContexts];
 
   CHECK_EQ(0, CountGlobalContexts());
 
   // Create an number of contexts and check the length of the weak list both
   // with and without GCs while iterating the list.
   for (int i = 0; i < kNumTestContexts; i++) {
@@ skipping 29 matching lines @@
   CompileRun("f5()");
   CHECK_EQ(opt ? 5 : 0, CountOptimizedUserFunctions(ctx[0]));
   CHECK_EQ(opt ? 5 : 0, CountOptimizedUserFunctionsWithGC(ctx[0], 4));
 
   ctx[0]->Exit();
 }
 
 
 TEST(TestSizeOfObjectsVsHeapIteratorPrecision) {
   InitializeVM();
-  intptr_t size_of_objects_1 = Heap::SizeOfObjects();
+  intptr_t size_of_objects_1 = HEAP->SizeOfObjects();
   HeapIterator iterator(HeapIterator::kFilterFreeListNodes);
   intptr_t size_of_objects_2 = 0;
   for (HeapObject* obj = iterator.next();
        obj != NULL;
        obj = iterator.next()) {
     size_of_objects_2 += obj->Size();
   }
   // Delta must be within 1% of the larger result.
   if (size_of_objects_1 > size_of_objects_2) {
     intptr_t delta = size_of_objects_1 - size_of_objects_2;
@@ skipping 34 matching lines @@
   Object* a_;
   Object* b_;
   bool a_found_;
   bool b_found_;
 };
 
 TEST(HeapIteratorFilterUnreachable) {
   InitializeVM();
   v8::HandleScope scope;
   CompileRun("a = {}; b = {};");
-  v8::Handle<Object> a(Top::context()->global()->GetProperty(
-      *Factory::LookupAsciiSymbol("a"))->ToObjectChecked());
-  v8::Handle<Object> b(Top::context()->global()->GetProperty(
-      *Factory::LookupAsciiSymbol("b"))->ToObjectChecked());
+  v8::Handle<Object> a(ISOLATE->context()->global()->GetProperty(
+      *FACTORY->LookupAsciiSymbol("a"))->ToObjectChecked());
+  v8::Handle<Object> b(ISOLATE->context()->global()->GetProperty(
+      *FACTORY->LookupAsciiSymbol("b"))->ToObjectChecked());
   CHECK_NE(*a, *b);
   {
     HeapIteratorTestHelper helper(*a, *b);
     helper.IterateHeap(HeapIterator::kFilterUnreachable);
     CHECK(helper.a_found());
     CHECK(helper.b_found());
   }
-  CHECK(Top::context()->global()->DeleteProperty(
-      *Factory::LookupAsciiSymbol("a"), JSObject::FORCE_DELETION));
+  CHECK(ISOLATE->context()->global()->DeleteProperty(
+      *FACTORY->LookupAsciiSymbol("a"), JSObject::FORCE_DELETION));
   // We ensure that GC will not happen, so our raw pointer stays valid.
   AssertNoAllocation no_alloc;
   Object* a_saved = *a;
   a.Clear();
   // Verify that "a" object still resides in the heap...
   {
     HeapIteratorTestHelper helper(a_saved, *b);
     helper.IterateHeap(HeapIterator::kNoFiltering);
     CHECK(helper.a_found());
     CHECK(helper.b_found());
   }
   // ...but is now unreachable.
   {
     HeapIteratorTestHelper helper(a_saved, *b);
     helper.IterateHeap(HeapIterator::kFilterUnreachable);
     CHECK(!helper.a_found());
     CHECK(helper.b_found());
   }
 }