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/*
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __MEM_RUBY_COMMON_DATABLOCK_HH__
#define __MEM_RUBY_COMMON_DATABLOCK_HH__
#include <inttypes.h>
#include <cassert>
#include <iomanip>
#include <iostream>
class WriteMask;
class DataBlock
{
public:
DataBlock()
{
alloc();
}
DataBlock(const DataBlock &cp);
~DataBlock()
{
if (m_alloc)
delete [] m_data;
}
DataBlock& operator=(const DataBlock& obj);
void assign(uint8_t *data);
void clear();
uint8_t getByte(int whichByte) const;
const uint8_t *getData(int offset, int len) const;
uint8_t *getDataMod(int offset);
void setByte(int whichByte, uint8_t data);
void setData(const uint8_t *data, int offset, int len);
void copyPartial(const DataBlock &dblk, int offset, int len);
void copyPartial(const DataBlock &dblk, const WriteMask &mask);
void atomicPartial(const DataBlock & dblk, const WriteMask & mask);
bool equal(const DataBlock& obj) const;
void print(std::ostream& out) const;
private:
void alloc();
uint8_t *m_data;
bool m_alloc;
};
inline void
DataBlock::assign(uint8_t *data)
{
assert(data != NULL);
if (m_alloc) {
delete [] m_data;
}
m_data = data;
m_alloc = false;
}
inline uint8_t
DataBlock::getByte(int whichByte) const
{
return m_data[whichByte];
}
inline void
DataBlock::setByte(int whichByte, uint8_t data)
{
m_data[whichByte] = data;
}
inline void
DataBlock::copyPartial(const DataBlock & dblk, int offset, int len)
{
setData(&dblk.m_data[offset], offset, len);
}
inline std::ostream&
operator<<(std::ostream& out, const DataBlock& obj)
{
obj.print(out);
out << std::flush;
return out;
}
inline bool
operator==(const DataBlock& obj1,const DataBlock& obj2)
{
return obj1.equal(obj2);
}
#endif // __MEM_RUBY_COMMON_DATABLOCK_HH__
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