topical media & game development
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lib-of-vs-libs-Poco-include-Poco-DOM-DOMObject.h / h



  //
  // DOMObject.h
  //
  // Id: //poco/1.3/XML/include/Poco/DOM/DOMObject.h#1 
  //
  // Library: XML
  // Package: DOM
  // Module:  DOM
  //
  // Definition of the DOMObject class.
  //
  // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
  // and Contributors.
  //
  // Permission is hereby granted, free of charge, to any person or organization
  // obtaining a copy of the software and accompanying documentation covered by
  // this license (the "Software") to use, reproduce, display, distribute,
  // execute, and transmit the Software, and to prepare derivative works of the
  // Software, and to permit third-parties to whom the Software is furnished to
  // do so, all subject to the following:
  // 
  // The copyright notices in the Software and this entire statement, including
  // the above license grant, this restriction and the following disclaimer,
  // must be included in all copies of the Software, in whole or in part, and
  // all derivative works of the Software, unless such copies or derivative
  // works are solely in the form of machine-executable object code generated by
  // a source language processor.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
  // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
  // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
  // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  // DEALINGS IN THE SOFTWARE.
  //
  
  ifndef DOM_DOMObject_INCLUDED
  define DOM_DOMObject_INCLUDED
  
  include "Poco/XML/XML.h"
  
  namespace Poco {
  namespace XML {
  
  class XML_API DOMObject
The base class for all objects in the Document Object Model. DOMObject defines the rules for memory management in this implementation of the DOM. Violation of these rules, which are outlined in the following, results in memory leaks or dangling pointers. Every object created by new or by a factory method (for example, Document::create*) must be released with a call to release() or autoRelease() when it is no longer needed. Every object created by cloning or importing another object must be released. For every call to duplicate() there must be a matching call to release(). An object obtained via any other way must not be released, except ownership of it has been explicitely taken with a call to duplicate(). While DOMObjects are safe for use in multithreaded programs, a DOMObject or one of its subclasses must not be accessed from multiple threads simultaneously. { public: DOMObject(); Creates the DOMObject. The object's reference count is initialized to one. 

          void duplicate() const;
Increases the object's reference count. 

          void release() const;
Decreases the object's reference count. If the reference count reaches zero, the object is deleted. virtual void autoRelease() = 0; Adds the object to an appropriate AutoReleasePool, which is usually the AutoReleasePool managed by the Document to which this object belongs. 

  protected:
          virtual ~DOMObject();
Destroys the DOMObject. 

  private:
          DOMObject(const DOMObject&);
          DOMObject& operator = (const DOMObject&);
          
          mutable int _rc;
  };
  
  //
  // inlines
  //
  inline void DOMObject::duplicate() const
  {
          ++_rc;
  }
  
  inline void DOMObject::release() const
  {
          if (--_rc == 0)
                  delete this;
  }
  
  } } // namespace Poco::XML
  
  endif // DOM_DOMObject_INCLUDED
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 04/09/2009

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