Changes to pass the current isolate to all runtime and native calls.

runtime/vm/scavenger.h

 // Copyright (c) 2011, 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.
 
 #ifndef VM_SCAVENGER_H_
 #define VM_SCAVENGER_H_
 
 #include "vm/globals.h"
 #include "vm/object.h"
 #include "vm/utils.h"
 #include "vm/virtual_memory.h"
 
 namespace dart {
 
 // Forward declarations.
 class Heap;
+class Isolate;
 
 class Scavenger {
  public:
   Scavenger(Heap* heap, intptr_t max_capacity, uword object_alignment);
   ~Scavenger();
 
   // Check whether this Scavenger contains this address.
   // During scavenging both the to and from spaces contain "legal" objects.
   // During a scavenge this function only returns true for addresses that will
   // be part of the surviving objects.
@@ skipping 34 matching lines @@
   static intptr_t top_offset() { return OFFSET_OF(Scavenger, top_); }
   static intptr_t end_offset() { return OFFSET_OF(Scavenger, end_); }
 
   intptr_t in_use() const { return (top_ - FirstObjectStart()); }
 
   void VisitObjectPointers(ObjectPointerVisitor* visitor) const;
 
  private:
   uword FirstObjectStart() const { return to_->start() | object_alignment_; }
   void Prologue();
-  void IterateRoots(ObjectPointerVisitor* visitor);
+  void IterateRoots(Isolate* isolate, ObjectPointerVisitor* visitor);
   void ProcessToSpace(ObjectPointerVisitor* visitor);
   void Epilogue();
 
   VirtualMemory* space_;
   MemoryRegion* to_;
   MemoryRegion* from_;
 
   Heap* heap_;
 
   // Current allocation top and end. These values are being accessed directly
@@ skipping 10 matching lines @@
   bool scavenging_;
 
   friend class ScavengerVisitor;
 
   DISALLOW_COPY_AND_ASSIGN(Scavenger);
 };
 
 }  // namespace dart
 
 #endif  // VM_SCAVENGER_H_