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83 lines
2.9 KiB
83 lines
2.9 KiB
// AlignedBlob.h -- Simple Aligned Blob (Binary Large OBject)
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// (c) Copyright Schlumberger Technology Corp., unpublished work, created
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// 2001. This computer program includes Confidential, Proprietary
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// Information and is a Trade Secret of Schlumberger Technology Corp. All
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// use, disclosure, and/or reproduction is prohibited unless authorized
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// in writing. All Rights Reserved.
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#if !defined(SLBCSP_ALIGNEDBLOB_H)
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#define SLBCSP_ALIGNEDBLOB_H
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#include <stddef.h> // for size_t
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#include <scuArrayP.h>
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#include "Blob.h"
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// Copies an Blob into a data buffer that is guaranteed to be
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// aligned. The data buffer in Blob's (std::basic_string/string) are
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// not guaranteed to be aligned. Therefore interpreting the data buffer
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// as a structure and dereferencing a non-byte member could result in
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// alignment faults. AlignedBlob creates an aligned data buffer from
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// a Blob. Useful for 64-bit architectures. AlignedBlob's are
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// fixed length and can not grow. Very primitive. Their intent is
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// only to transform a Blob into something that is data aligned
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// for dereferencing purposes only.
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class AlignedBlob
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{
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public:
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// Types
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typedef Blob::value_type ValueType;
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typedef Blob::size_type SizeType;
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// C'tors/D'tors
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explicit
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AlignedBlob(Blob const &rblb = Blob());
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AlignedBlob(ValueType const *p,
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SizeType cLength);
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AlignedBlob(AlignedBlob const &rhs);
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virtual
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~AlignedBlob() throw();
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// Operators
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AlignedBlob &
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operator=(AlignedBlob const &rhs);
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// Operations
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// Access
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ValueType *
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Data() const throw();
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SizeType
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Length() const throw();
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// Predicates
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protected:
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// Types
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Variables
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private:
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// Types
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Variables
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scu::AutoArrayPtr<ValueType> m_aaBlob;
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SizeType m_cLength;
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};
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#endif // SLBCSP_ALIGNEDBLOB_H
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