|  | // 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 RUNTIME_VM_HANDLE_VISITOR_H_ | 
|  | #define RUNTIME_VM_HANDLE_VISITOR_H_ | 
|  |  | 
|  | #include "vm/allocation.h" | 
|  | #include "vm/flags.h" | 
|  | #include "vm/os.h" | 
|  |  | 
|  | namespace dart { | 
|  |  | 
|  | class Thread; | 
|  |  | 
|  | class HandleVisitor { | 
|  | public: | 
|  | explicit HandleVisitor(Thread* thread) : thread_(thread) {} | 
|  | virtual ~HandleVisitor() {} | 
|  |  | 
|  | Thread* thread() const { return thread_; } | 
|  |  | 
|  | virtual void VisitHandle(uword addr) = 0; | 
|  |  | 
|  | private: | 
|  | Thread* thread_; | 
|  |  | 
|  | DISALLOW_IMPLICIT_CONSTRUCTORS(HandleVisitor); | 
|  | }; | 
|  |  | 
|  | }  // namespace dart | 
|  |  | 
|  | #endif  // RUNTIME_VM_HANDLE_VISITOR_H_ |