VM: Load allocation-top and -end via Thread.

runtime/vm/isolate.h

Index: runtime/vm/isolate.h
diff --git a/runtime/vm/isolate.h b/runtime/vm/isolate.h
index ce2de0ffdc8ae38e43077ee853ba4493141991aa..43031c4c19a56153c695e5dfe05a1778ab2db468 100644
--- a/runtime/vm/isolate.h
+++ b/runtime/vm/isolate.h
@@ -122,12 +122,6 @@ class Isolate : public BaseIsolate {
     return thread == NULL ? NULL : thread->isolate();
   }
 
-  static void InitOnce();
-  static Isolate* Init(const char* name_prefix,
-                       const Dart_IsolateFlags& api_flags,
-                       bool is_vm_isolate = false);
-  void Shutdown();
-
   // Register a newly introduced class.
   void RegisterClass(const Class& cls);
   void RegisterClassAt(intptr_t index, const Class& cls);
@@ -755,8 +749,16 @@ class Isolate : public BaseIsolate {
   }
 
  private:
+  friend class Dart;  // Init, InitOnce, Shutdown.
+
   explicit Isolate(const Dart_IsolateFlags& api_flags);
 
+  static void InitOnce();

[Florian Schneider, 2015/08/03 14:07:32]

I made these methods private, so that cc-tests don't call them directly, and use
the Dart API to create and shutdown isolates.

+  static Isolate* Init(const char* name_prefix,
+                       const Dart_IsolateFlags& api_flags,
+                       bool is_vm_isolate = false);
+  void Shutdown();
+
   void BuildName(const char* name_prefix);
   void PrintInvokedFunctions();