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/* Copyright (C) 2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
#ifndef LONG_SIGNAL_HPP
#define LONG_SIGNAL_HPP
#include "pc.hpp"
#include <ArrayPool.hpp>
/**
* Section handling
*/
struct SectionSegment {
STATIC_CONST( DataLength = NDB_SECTION_SEGMENT_SZ );
Uint32 m_ownerRef;
Uint32 m_sz;
Uint32 m_lastSegment;
union {
Uint32 m_nextSegment;
Uint32 nextPool;
};
Uint32 theData[DataLength];
};
/**
* Pool for SectionSegments
*/
class SectionSegmentPool : public ArrayPool<SectionSegment> {};
/**
* And the instance
*/
extern SectionSegmentPool g_sectionSegmentPool;
/**
* Function prototypes
*/
void print(SegmentedSectionPtr ptr, FILE* out);
void copy(SegmentedSectionPtr dst, Uint32 * src, Uint32 len);
void copy(Uint32 * dst, SegmentedSectionPtr src);
bool import(Ptr<SectionSegment> & first, const Uint32 * src, Uint32 len);
extern class SectionSegmentPool g_sectionSegmentPool;
void getSection(SegmentedSectionPtr & ptr, Uint32 id);
void linkSegments(Uint32 head, Uint32 tail);
void getSections(Uint32 secCount, SegmentedSectionPtr ptr[3]);
void releaseSections(Uint32 secCount, SegmentedSectionPtr ptr[3]);
#include "DataBuffer.hpp"
template<Uint32 sz>
void
append(DataBuffer<sz>& dst, SegmentedSectionPtr ptr, SectionSegmentPool& pool){
Uint32 len = ptr.sz;
while(len > SectionSegment::DataLength){
dst.append(ptr.p->theData, SectionSegment::DataLength);
ptr.p = pool.getPtr(ptr.p->m_nextSegment);
len -= SectionSegment::DataLength;
}
dst.append(ptr.p->theData, len);
}
#endif
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