Add support for object pool

runtime/vm/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_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 2206 matching lines @@
  private:
   static RawNamespace* New();
 
   FINAL_HEAP_OBJECT_IMPLEMENTATION(Namespace, Object);
   friend class Class;
 };
 
 
 class Instructions : public Object {
  public:
-  intptr_t size() const { return raw_ptr()->size_; }
+  intptr_t size() const { return raw_ptr()->size_; }  // Excludes HeaderSize().
   RawCode* code() const { return raw_ptr()->code_; }
+  RawArray* object_pool() const { return raw_ptr()->object_pool_; }
 
   uword EntryPoint() const {
     return reinterpret_cast<uword>(raw_ptr()) + HeaderSize();
   }
 
   static const intptr_t kMaxElements = (kIntptrMax -
                                         (sizeof(RawInstructions) +
                                          sizeof(RawObject) +
                                          (2 * OS::kMaxPreferredCodeAlignment)));
 
@@ skipping 17 matching lines @@
 
   static RawInstructions* FromEntryPoint(uword entry_point) {
     return reinterpret_cast<RawInstructions*>(
         entry_point - HeaderSize() + kHeapObjectTag);
   }
 
  private:
   void set_size(intptr_t size) const {
     raw_ptr()->size_ = size;
   }
-  void set_code(RawCode* code) {
+  void set_code(RawCode* code) const {
     raw_ptr()->code_ = code;
   }
+  void set_object_pool(RawArray* object_pool) const {
+    raw_ptr()->object_pool_ = object_pool;
+  }
 
   // New is a private method as RawInstruction and RawCode objects should
   // only be created using the Code::FinalizeCode method. This method creates
   // the RawInstruction and RawCode objects, sets up the pointer offsets
   // and links the two in a GC safe manner.
   static RawInstructions* New(intptr_t size);
 
   FINAL_HEAP_OBJECT_IMPLEMENTATION(Instructions, Object);
   friend class Class;
   friend class Code;
@@ skipping 322 matching lines @@
   }
 
   uword EntryPoint() const {
     const Instructions& instr = Instructions::Handle(instructions());
     return instr.EntryPoint();
   }
   intptr_t Size() const {
     const Instructions& instr = Instructions::Handle(instructions());
     return instr.size();
   }
+  bool ContainsInstructionAt(uword addr) const {
+    const Instructions& instr = Instructions::Handle(instructions());
+    const uword offset = addr - instr.EntryPoint();
+    return offset < static_cast<uword>(instr.size());
+  }
 
   RawPcDescriptors* pc_descriptors() const {
     return raw_ptr()->pc_descriptors_;
   }
   void set_pc_descriptors(const PcDescriptors& descriptors) const {
     StorePointer(&raw_ptr()->pc_descriptors_, descriptors.raw());
   }
 
   // Array of DeoptInfo objects.
   RawArray* deopt_info_array() const {
@@ skipping 3729 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_