Track live instance and allocation counts for classes

runtime/vm/raw_object.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_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/globals.h"
 #include "vm/token.h"
@@ skipping 385 matching lines @@
   static bool IsIntegerClassId(intptr_t index);
   static bool IsStringClassId(intptr_t index);
   static bool IsOneByteStringClassId(intptr_t index);
   static bool IsTwoByteStringClassId(intptr_t index);
   static bool IsExternalStringClassId(intptr_t index);
   static bool IsBuiltinListClassId(intptr_t index);
   static bool IsTypedDataClassId(intptr_t index);
   static bool IsTypedDataViewClassId(intptr_t index);
   static bool IsExternalTypedDataClassId(intptr_t index);
   static bool IsInternalVMdefinedClassId(intptr_t index);
+  static bool IsVariableSizeClassId(intptr_t index);
 
   static intptr_t NumberOfTypedDataClasses();
 
  private:
   uword tags_;  // Various object tags (bits).
 
   class WatchedBit : public BitField<bool, kWatchedBit, 1> {};
 
   class MarkBit : public BitField<bool, kMarkBit, 1> {};
 
@@ skipping 19 matching lines @@
     uword tags = ptr()->tags_;
     return ClassIdTag::decode(tags);
   }
 
   friend class Api;
   friend class Array;
   friend class FreeListElement;
   friend class GCMarker;
   friend class ExternalTypedData;
   friend class Heap;
+  friend class ClassStatsVisitor;
   friend class MarkingVisitor;
   friend class Object;
   friend class ObjectHistogram;
   friend class RawExternalTypedData;
   friend class RawInstructions;
   friend class RawInstance;
   friend class RawTypedData;
   friend class Scavenger;
+  friend class ScavengerVisitor;
   friend class SnapshotReader;
   friend class SnapshotWriter;
   friend class String;
   friend class TypedData;
   friend class TypedDataView;
 
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(RawObject);
 };
 
 
 class RawClass : public RawObject {
  public:
   enum ClassFinalizedState {
     kAllocated = 0,  // Initial state.
     kPreFinalized,  // VM classes: size precomputed, but no checks done.
     kFinalized,  // Class parsed, finalized and ready for use.
   };
 
  private:
   RAW_HEAP_OBJECT_IMPLEMENTATION(Class);
 
   RawObject** from() { return reinterpret_cast<RawObject**>(&ptr()->name_); }
   RawString* name_;
+  RawString* user_name_;
   RawArray* functions_;
   RawArray* fields_;
   RawArray* offset_in_words_to_field_;
   RawGrowableObjectArray* closure_functions_;  // Local functions and literals.
   RawArray* interfaces_;  // Array of AbstractType.
   RawGrowableObjectArray* direct_subclasses_;  // Array of Class.
   RawScript* script_;
   RawLibrary* library_;
   RawTypeArguments* type_parameters_;  // Array of TypeParameter.
   RawAbstractType* super_type_;
@@ skipping 1244 matching lines @@
           index <= kExternalTypedDataInt32x4ArrayCid);
 }
 
 
 inline bool RawObject::IsInternalVMdefinedClassId(intptr_t index) {
   return ((index < kNumPredefinedCids) &&
           !RawObject::IsTypedDataViewClassId(index));
 }
 
 
+
+inline bool RawObject::IsVariableSizeClassId(intptr_t index) {
+  return (index == kArrayCid) ||
+         (index == kImmutableArrayCid) ||
+         RawObject::IsOneByteStringClassId(index) ||
+         RawObject::IsTwoByteStringClassId(index) ||
+         RawObject::IsTypedDataClassId(index) ||
+         (index == kContextCid) ||
+         (index == kTypeArgumentsCid) ||
+         (index == kInstructionsCid) ||
+         (index == kPcDescriptorsCid) ||
+         (index == kStackmapCid) ||
+         (index == kLocalVarDescriptorsCid) ||
+         (index == kExceptionHandlersCid) ||
+         (index == kDeoptInfoCid) ||
+         (index == kCodeCid) ||
+         (index == kContextScopeCid) ||
+         (index == kInstanceCid) ||
+         (index == kBigintCid) ||
+         (index == kJSRegExpCid);
+}
+
+
 inline intptr_t RawObject::NumberOfTypedDataClasses() {
   // Make sure this is updated when new TypedData types are added.
   ASSERT(kTypedDataInt8ArrayViewCid == kTypedDataInt8ArrayCid + 13);
   ASSERT(kExternalTypedDataInt8ArrayCid == kTypedDataInt8ArrayViewCid + 14);
   ASSERT(kNullCid == kExternalTypedDataInt8ArrayCid + 13);
   return (kNullCid - kTypedDataInt8ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_