Object ID Ring with tests

runtime/vm/heap.h

 // Copyright (c) 2012, 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_HEAP_H_
 #define VM_HEAP_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/flags.h"
@@ skipping 178 matching lines @@
     ASSERT((id >= 0) && (id < GCStats::kDataEntries));
     stats_.data_[id] = value;
   }
 
   bool gc_in_progress() const { return gc_in_progress_; }
 
   static bool IsAllocatableInNewSpace(intptr_t size) {
     return size <= kNewAllocatableSize;
   }
 
+  void set_object_id_ring_table(RawObject** object_id_ring_table,
+                                intptr_t object_id_ring_table_size) {
+    ASSERT(!gc_in_progress_);
+    object_id_ring_table_ = object_id_ring_table;
+    object_id_ring_table_size_ = object_id_ring_table_size;
+  }
+  RawObject** get_object_id_ring_table() {
+    return object_id_ring_table_;
+  }
+  intptr_t get_object_id_ring_table_size() {
+    return object_id_ring_table_size_;
+  }
+
  private:
   class GCStats : public ValueObject {
    public:
     GCStats() {}
     intptr_t num_;
     Heap::Space space_;
     Heap::GCReason reason_;
 
     class Data : public ValueObject {
     public:
@@ skipping 39 matching lines @@
 
   // GC stats collection.
   GCStats stats_;
 
   // This heap is in read-only mode: No allocation is allowed.
   bool read_only_;
 
   // GC on the heap is in progress.
   bool gc_in_progress_;
 
+  // Ring of objects who have a vm service id assigned to them.
+  RawObject** object_id_ring_table_;
+  intptr_t object_id_ring_table_size_;
+
   friend class GCTestHelper;
   DISALLOW_COPY_AND_ASSIGN(Heap);
 };
 
 
 #if defined(DEBUG)
 class NoGCScope : public StackResource {
  public:
   NoGCScope();
   ~NoGCScope();
@@ skipping 15 matching lines @@
   NoHeapGrowthControlScope();
   ~NoHeapGrowthControlScope();
  private:
   bool current_growth_controller_state_;
   DISALLOW_COPY_AND_ASSIGN(NoHeapGrowthControlScope);
 };
 
 }  // namespace dart
 
 #endif  // VM_HEAP_H_