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79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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// Original file Copyright Crytek GMBH or its affiliates, used under license.
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#ifndef CRYINCLUDE_EDITOR_UTIL_CRYMEMFILE_H
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#define CRYINCLUDE_EDITOR_UTIL_CRYMEMFILE_H
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#pragma once
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#include <QBuffer>
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// derived class to get correct memory allocation/deallocation with custom memory manager - and to avoid memory leaks from calling Detach()
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class CCryMemFile
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: public QBuffer
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{
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public: // ---------------------------------------------------------------
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CCryMemFile()
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: QBuffer(&m_lpBuffer)
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{
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open(QIODevice::WriteOnly);
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}
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CCryMemFile(char* lpBuffer, int nBufferSize)
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: QBuffer(&m_lpBuffer), m_lpBuffer(lpBuffer, nBufferSize)
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{
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open(QIODevice::WriteOnly);
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}
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virtual ~CCryMemFile()
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{
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close(); // call Close() to make sure the Free() is using my v-table
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}
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qulonglong GetPosition() const
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{
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return QBuffer::pos();
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}
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qulonglong GetLength() const
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{
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return QBuffer::size();
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}
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void Write(const void* lpBuf, unsigned int nCount)
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{
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QBuffer::write(reinterpret_cast<const char*>(lpBuf), nCount);
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}
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// only for temporary use
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void* GetMemPtr() const
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{
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return const_cast<char*>(m_lpBuffer.data());
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}
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void Close()
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{
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QBuffer::close();
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}
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char* Detach()
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{
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assert(0); // dangerous - most likely we cause memory leak - better use GetMemPtr
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return 0;
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}
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private:
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QByteArray m_lpBuffer;
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};
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#endif // CRYINCLUDE_EDITOR_UTIL_CRYMEMFILE_H
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