Added recording of heap and global handle stats in a stack-allocated

src/heap.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 171 matching lines @@
   V(space_symbol, " ")                                                   \
   V(exec_symbol, "exec")                                                 \
   V(zero_symbol, "0")                                                    \
   V(global_eval_symbol, "GlobalEval")                                    \
   V(identity_hash_symbol, "v8::IdentityHash")                            \
   V(closure_symbol, "(closure)")
 
 
 // Forward declaration of the GCTracer class.
 class GCTracer;
+class HeapStats;
 
 
 // The all static Heap captures the interface to the global object heap.
 // All JavaScript contexts by this process share the same object heap.
 
 class Heap : public AllStatic {
  public:
   // Configure heap size before setup. Return false if the heap has been
   // setup already.
   static bool ConfigureHeap(int max_semispace_size, int max_old_gen_size);
@@ skipping 656 matching lines @@
     kStrongRootListLength = kSymbolTableRootIndex,
     kRootListLength
   };
 
   static Object* NumberToString(Object* number);
 
   static Map* MapForExternalArrayType(ExternalArrayType array_type);
   static RootListIndex RootIndexForExternalArrayType(
       ExternalArrayType array_type);
 
+  static void RecordStats(HeapStats* stats);
+
  private:
   static int reserved_semispace_size_;
   static int max_semispace_size_;
   static int initial_semispace_size_;
   static int max_old_generation_size_;
   static size_t code_range_size_;
 
   // For keeping track of how much data has survived
   // scavenge since last new space expansion.
   static int survived_since_last_expansion_;
@@ skipping 215 matching lines @@
   static const int kInitialSymbolTableSize = 2048;
   static const int kInitialEvalCacheSize = 64;
 
   friend class Factory;
   friend class DisallowAllocationFailure;
   friend class AlwaysAllocateScope;
   friend class LinearAllocationScope;
 };
 
 
+struct HeapStats {
+  int new_space_size;
+  int new_space_capacity;
+  int old_pointer_space_size;
+  int old_pointer_space_capacity;
+  int old_data_space_size;
+  int old_data_space_capacity;
+  int code_space_size;
+  int code_space_capacity;
+  int map_space_size;
+  int map_space_capacity;
+  int cell_space_size;
+  int cell_space_capacity;
+  int lo_space_size;
+  int global_handle_count;
+  int weak_global_handle_count;
+  int pending_global_handle_count;
+  int near_death_global_handle_count;
+  int destroyed_global_handle_count;
+};
+
+
 class AlwaysAllocateScope {
  public:
   AlwaysAllocateScope() {
     // We shouldn't hit any nested scopes, because that requires
     // non-handle code to call handle code. The code still works but
     // performance will degrade, so we want to catch this situation
     // in debug mode.
     ASSERT(Heap::always_allocate_scope_depth_ == 0);
     Heap::always_allocate_scope_depth_++;
   }
@@ skipping 478 matching lines @@
   }
   static TranscendentalCache* caches_[kNumberOfCaches];
   Element elements_[kCacheSize];
   Type type_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_