• Skip to content
  • Skip to link menu
KDE 4.3 API Reference
  • KDE API Reference
  • kdelibs
  • Sitemap
  • Contact Us
 

WTF

RefCounted.h

Go to the documentation of this file.
00001 /*
00002  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
00003  *
00004  * This library is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Library General Public
00006  * License as published by the Free Software Foundation; either
00007  * version 2 of the License, or (at your option) any later version.
00008  *
00009  * This library is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * Library General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU Library General Public License
00015  * along with this library; see the file COPYING.LIB.  If not, write to
00016  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017  * Boston, MA 02110-1301, USA.
00018  *
00019  */
00020 
00021 #ifndef RefCounted_h
00022 #define RefCounted_h
00023 
00024 #include <wtf/Assertions.h>
00025 #include <wtf/Noncopyable.h>
00026 
00027 namespace WTF {
00028 
00029 template<class T> class RefCounted : Noncopyable {
00030 public:
00031     RefCounted(int initialRefCount = 1)
00032         : m_refCount(initialRefCount)
00033 #ifndef NDEBUG
00034         , m_deletionHasBegun(false)
00035 #endif
00036     {
00037     }
00038 
00039     void ref()
00040     {
00041         ASSERT(!m_deletionHasBegun);
00042         ++m_refCount;
00043     }
00044 
00045     void deref()
00046     {
00047         ASSERT(!m_deletionHasBegun);
00048         ASSERT(m_refCount > 0);
00049         if (m_refCount == 1) {
00050 #ifndef NDEBUG
00051             m_deletionHasBegun = true;
00052 #endif
00053             delete static_cast<T*>(this);
00054         } else 
00055             --m_refCount;
00056     }
00057 
00058     bool hasOneRef()
00059     {
00060         ASSERT(!m_deletionHasBegun);
00061         return m_refCount == 1;
00062     }
00063 
00064     int refCount() const
00065     {
00066         return m_refCount;
00067     }
00068 
00069 private:
00070     int m_refCount;
00071 #ifndef NDEBUG
00072     bool m_deletionHasBegun;
00073 #endif
00074 };
00075 
00076 } // namespace WTF
00077 
00078 using WTF::RefCounted;
00079 
00080 #endif // RefCounted_h

WTF

Skip menu "WTF"
  • Main Page
  • Namespace List
  • Class Hierarchy
  • Alphabetical List
  • Class List
  • File List
  • Namespace Members
  • Class Members
  • Related Pages

kdelibs

Skip menu "kdelibs"
  • DNSSD
  • Interfaces
  •   KHexEdit
  •   KMediaPlayer
  •   KSpeech
  •   KTextEditor
  • Kate
  • kconf_update
  • KDE3Support
  •   KUnitTest
  • KDECore
  • KDED
  • KDEsu
  • KDEUI
  • KDocTools
  • KFile
  • KHTML
  • KImgIO
  • KInit
  • kio
  • KIOSlave
  • KJS
  •   KJS-API
  •   WTF
  • kjsembed
  • KNewStuff
  • KParts
  • KPty
  • Kross
  • KUtils
  • Nepomuk
  • Plasma
  • Solid
  • Sonnet
  • ThreadWeaver
Generated for kdelibs by doxygen 1.6.1
This website is maintained by Adriaan de Groot and Allen Winter.
KDE® and the K Desktop Environment® logo are registered trademarks of KDE e.V. | Legal