File indexing completed on 2024-05-12 15:43:39

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef RefCounted_h
 #define RefCounted_h
 
 #include <wtf/Assertions.h>
 #include <wtf/Noncopyable.h>
 
 namespace WTF
 {
 
 template<class T> class RefCounted : Noncopyable
 {
 public:
     RefCounted(int initialRefCount = 1)
         : m_refCount(initialRefCount)
 #ifndef NDEBUG
         , m_deletionHasBegun(false)
 #endif
     {
     }
 
     void ref()
     {
         ASSERT(!m_deletionHasBegun);
         ++m_refCount;
     }
 
     void deref()
     {
         ASSERT(!m_deletionHasBegun);
         ASSERT(m_refCount > 0);
         if (m_refCount == 1) {
 #ifndef NDEBUG
             m_deletionHasBegun = true;
 #endif
             delete static_cast<T *>(this);
         } else {
             --m_refCount;
         }
     }
 
     bool hasOneRef()
     {
         ASSERT(!m_deletionHasBegun);
         return m_refCount == 1;
     }
 
     int refCount() const
     {
         return m_refCount;
     }
 
 private:
     int m_refCount;
 #ifndef NDEBUG
     bool m_deletionHasBegun;
 #endif
 };
 
 } // namespace WTF
 
 using WTF::RefCounted;
 
 #endif // RefCounted_h