mirror of
https://github.com/DaedalusX64/daedalus.git
synced 2025-04-02 10:21:48 -04:00
130 lines
2.3 KiB
C++
130 lines
2.3 KiB
C++
/*
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Copyright (C) 2005 StrmnNrmn
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef UTILITY_REFCOUNTED_H_
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#define UTILITY_REFCOUNTED_H_
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#include <stdlib.h>
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#include "Base/Types.h"
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class CRefCounted
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{
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public:
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CRefCounted()
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: mRefCount( 0 )
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{
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}
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protected:
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virtual ~CRefCounted()
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{
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#ifdef DAEDALUS_ENABLE_ASSERTS
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DAEDALUS_ASSERT( mRefCount == 0, "Prematurely deleting refcounted object?" );
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#endif
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}
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public:
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void AddRef()
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{
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mRefCount++;
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}
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u32 Release()
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{
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#ifdef DAEDALUS_ENABLE_ASSERTS
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DAEDALUS_ASSERT( mRefCount > 0, "RefCount underflow!" );
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#endif
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mRefCount--;
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u32 ref_count( mRefCount );
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if(ref_count == 0)
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{
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delete this;
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}
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return ref_count;
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}
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private:
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u32 mRefCount;
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};
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template< typename T >
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class CRefPtr
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{
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public:
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CRefPtr() : mPtr( NULL ) {}
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CRefPtr( T * ptr ) : mPtr( ptr ) { if( mPtr != NULL ) mPtr->AddRef(); }
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CRefPtr( const CRefPtr & rhs ) : mPtr( rhs.mPtr ) { if( mPtr != NULL ) mPtr->AddRef(); }
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T* operator=( const CRefPtr & rhs )
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{
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if( &rhs != this )
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{
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Assign( rhs.mPtr );
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}
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return mPtr;
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}
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T* operator=( T * ptr )
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{
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Assign( ptr );
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return mPtr;
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}
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~CRefPtr()
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{
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if( mPtr )
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{
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mPtr->Release();
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}
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}
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operator T *() const
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{
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return mPtr;
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}
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// CComPtr trick
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template <class U>
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class _NoAddRefRelease : public U
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{
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private:
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void AddRef();
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u32 Release();
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};
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_NoAddRefRelease<T> * operator->() const
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{
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return (_NoAddRefRelease<T>*)mPtr;
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}
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private:
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void Assign( T * ptr )
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{
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if( ptr != NULL ) ptr->AddRef();
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if( mPtr ) mPtr->Release();
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mPtr = ptr;
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}
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private:
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T * mPtr;
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};
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#endif // UTILITY_REFCOUNTED_H_
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