_ak_smart_ptr_8h

Wwise SDK 2019.2.15

 /*******************************************************************************

 The content of this file includes portions of the AUDIOKINETIC Wwise Technology

 released in source code form as part of the SDK installer package.

 Commercial License Usage

 Licensees holding valid commercial licenses to the AUDIOKINETIC Wwise Technology

 may use this file in accordance with the end user license agreement provided 

 with the software or, alternatively, in accordance with the terms contained in a

 written agreement between you and Audiokinetic Inc.

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 Alternatively, this file may be used under the Apache License, Version 2.0 (the 

 "Apache License"); you may not use this file except in compliance with the 

 Apache License. You may obtain a copy of the Apache License at 

 http://www.apache.org/licenses/LICENSE-2.0.

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 under the Apache License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES

 OR CONDITIONS OF ANY KIND, either express or implied. See the Apache License for

 the specific language governing permissions and limitations under the License.

   Version: <VERSION>  Build: <BUILDNUMBER>

   Copyright (c) <COPYRIGHTYEAR> Audiokinetic Inc.

 *******************************************************************************/

 // AkSmartPtr.h

 /// \file 

 /// Helper file.

 #ifndef _AK_SMARTPTR_H

 #define _AK_SMARTPTR_H

 #include <AK/SoundEngine/Common/AkTypes.h>

 template <class T> class CAkSmartPtr

 {

 public:

     /// Smart pointer constructor

     AkForceInline CAkSmartPtr()

         : m_pT( NULL )

     {

     }

     /// Smart pointer constructor

     AkForceInline CAkSmartPtr( T* in_pT )

     {

         m_pT = in_pT;

         if (m_pT)

             m_pT->AddRef();

     }

     /// Smart pointer copy constructor

     AkForceInline CAkSmartPtr( const CAkSmartPtr<T>& in_rPtr )

     {

         m_pT = in_rPtr.m_pT;

         if (m_pT)

             m_pT->AddRef();

     }

     /// Smart pointer move constructor

     AkForceInline CAkSmartPtr( CAkSmartPtr<T>&& in_rPtr )

     {

         m_pT = in_rPtr.m_pT;

         in_rPtr.m_pT = NULL;

     }

     /// Smart pointer destructor

     ~CAkSmartPtr()

     {

         Release();

     }

     /// Release

     AkForceInline void Release()

     {

         if( m_pT )

         {

             m_pT->Release();

             m_pT = NULL;

         }

     }

     /// Assign with no Addref.

     AkForceInline void Attach( T* in_pObj )

     {

         _Assign( in_pObj, false );   

     }

     /// Give the pointer without releasing it.

     AkForceInline T* Detach()

     {

         T* pObj = m_pT;

         m_pT = NULL;

         return pObj;

     }

     /// Copy Assignation operator</span>

     const CAkSmartPtr<T>& operator=( const CAkSmartPtr<T>& in_pObj )

     {

         _Assign( in_pObj.m_pT );

         return *this;

     }

     /// Move Assignation operator</span>

     CAkSmartPtr<T>& operator=( CAkSmartPtr<T>&& in_pObj )

     {

         _Assign( in_pObj.m_pT, false );

         in_pObj.m_pT = NULL;

         return *this;

     }

     /// Assignation operator</span>

     const CAkSmartPtr<T>& operator=( T* in_pObj )

     {

         _Assign( in_pObj );

         return *this;

     }

     /// Operator *

     T& operator*() { return *m_pT; }

     /// Operator ->

     T* operator->() const { return m_pT; }

     /// Operator

     operator</span> T*() const { return m_pT; }

     /// Operators to pass to functions like QueryInterface and other functions returning an addref'd pointer.

     T** operator &() { return &m_pT; }

     /// Operator *

     const T& operator*() const { return *m_pT; }

     /// Cast

     T* Cast() { return m_pT; }

     /// Cast

     const T* Cast() const { return m_pT; }

 protected:

     /// internal use only

     void _Assign( T* in_pObj, bool in_bAddRef = true )

     {

         if (in_pObj != NULL && in_bAddRef)

             in_pObj->AddRef();

         // Must use a local pointer since we cannot call Release(); without having set the m_pT to its final value.

         T* l_Ptr = m_pT;

         m_pT = in_pObj;

         if (l_Ptr)

             l_Ptr->Release();

     }

     /// internal use only

     bool _Compare( const T* in_pObj ) const

     {

         return m_pT == in_pObj;

     }

     /// internal use only

     T* m_pT; 

 };

 #endif // _AK_SMARTPTR_H