Introduce EmbedderHeapTracer

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index dea23a44f3df6e8e23496002d3bf913b48bd6c03..76f2bdc1f6035ee21616878f6d124a239eafc411 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -7174,6 +7174,15 @@ void V8::AddGCEpilogueCallback(GCCallback callback, GCType gc_type) {
       reinterpret_cast<v8::Isolate::GCCallback>(callback), gc_type, false);
 }
 
+void Isolate::SetEmbedderHeapTracer(EmbedderHeapTracer* tracer) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  isolate->heap()->SetEmbedderHeapTracer(tracer);
+}
+
+EmbedderHeapTracer* Isolate::embedder_heap_tracer() {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  return isolate->heap()->embedder_heap_tracer();
+}
 
 void Isolate::AddMemoryAllocationCallback(MemoryAllocationCallback callback,
                                           ObjectSpace space,
@@ -7237,6 +7246,13 @@ Isolate* Isolate::GetCurrent() {
   return reinterpret_cast<Isolate*>(isolate);
 }
 
+void Isolate::AddObjectToMarkingDeque(PersistentBase<Object>* handle) {
+  internal::Object** object =
+      reinterpret_cast<internal::Object**>(handle->val_);
+  internal::Isolate* internal_isolate =
+      reinterpret_cast<internal::Isolate*>(this);
+  internal_isolate->heap()->AddObjectToMarkingDeque(object);

[jochen (gone - plz use gerrit), 2016/03/30 16:44:45]

we usually use i:: and i_ instead of internal.

I'd also move this to global-handles.cc

[Marcel Hlopko, 2016/03/30 18:51:12]

Done.

+}
 
 Isolate* Isolate::New(const Isolate::CreateParams& params) {
   i::Isolate* isolate = new i::Isolate(false);