/usr/include/oce/NCollection_Buffer.hxx is in liboce-foundation-dev 0.18.2-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Created by: Kirill Gavrilov
// Copyright (c) 2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _NCollection_Buffer_HeaderFile
#define _NCollection_Buffer_HeaderFile
#include <NCollection_BaseAllocator.hxx>
#include <Standard_Transient.hxx>
//! Low-level buffer object.
class NCollection_Buffer : public Standard_Transient
{
public:
//! Default constructor.
//! When theData is NULL but theSize is not 0 than buffer of specified size will be allocated.
//! @param theAlloc memory allocator
//! @param theSize buffer size
//! @param theData buffer data allocated by theAlloc
NCollection_Buffer (const Handle(NCollection_BaseAllocator)& theAlloc,
const Standard_Size theSize = 0,
Standard_Byte* theData = NULL)
: myData (NULL),
mySize (0),
myAllocator (theAlloc)
{
if (theData != NULL)
{
myData = theData;
mySize = theSize;
}
else
{
Allocate (theSize);
}
}
//! Destructor.
~NCollection_Buffer()
{
Free();
}
//! @return buffer data
const Standard_Byte* Data() const
{
return myData;
}
//! @return buffer data
Standard_Byte* ChangeData()
{
return myData;
}
//! @return true if buffer is not allocated
bool IsEmpty() const
{
return myData == NULL;
}
//! Return buffer length in bytes.
Standard_Size Size() const
{
return mySize;
}
//! @return buffer allocator
const Handle(NCollection_BaseAllocator)& Allocator() const
{
return myAllocator;
}
//! Assign new buffer allocator with de-allocation of buffer.
void SetAllocator (const Handle(NCollection_BaseAllocator)& theAlloc)
{
Free();
myAllocator = theAlloc;
}
//! Allocate the buffer.
//! @param theSize buffer length in bytes
bool Allocate (const Standard_Size theSize)
{
Free();
mySize = theSize;
if (theSize != 0
|| !myAllocator.IsNull())
{
myData = (Standard_Byte* )myAllocator->Allocate (theSize);
}
if (myData == NULL)
{
mySize = 0;
return false;
}
return true;
}
//! De-allocate buffer.
void Free()
{
if (!myAllocator.IsNull())
{
myAllocator->Free (myData);
}
myData = NULL;
mySize = 0;
}
protected:
Standard_Byte* myData; //!< data pointer
Standard_Size mySize; //!< buffer length in bytes
Handle(NCollection_BaseAllocator) myAllocator; //!< buffer allocator
public:
DEFINE_STANDARD_RTTI(NCollection_Buffer) // Type definition
};
DEFINE_STANDARD_HANDLE(NCollection_Buffer, Standard_Transient)
#endif // _NCollection_Buffer_HeaderFile
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