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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 VMSignal_H
#define VMSignal_H
#include <ndb_global.h>
#include <ndb_limits.h>
#include <kernel_types.h>
#include <ErrorReporter.hpp>
#include <NodeBitmask.hpp>
#include <RefConvert.hpp>
#include <TransporterDefinitions.hpp>
/**
* Struct used when sending to multiple blocks
*/
struct NodeReceiverGroup {
NodeReceiverGroup();
NodeReceiverGroup(Uint32 blockRef);
NodeReceiverGroup(Uint32 blockNo, const NodeBitmask &);
NodeReceiverGroup(Uint32 blockNo, const class SignalCounter &);
NodeReceiverGroup& operator=(BlockReference ref);
Uint32 m_block;
NodeBitmask m_nodes;
};
template <unsigned T> struct SignalT
{
SignalHeader header;
SegmentedSectionPtr m_sectionPtr[3];
union {
Uint32 theData[T];
Uint64 dummyAlign;
};
};
/**
* class used for passing argumentes to blocks
*/
class Signal {
friend class SimulatedBlock;
friend class APZJobBuffer;
friend class FastScheduler;
public:
Signal();
Uint32 getLength() const;
Uint32 getTrace() const;
Uint32 getSendersBlockRef() const;
const Uint32* getDataPtr() const ;
Uint32* getDataPtrSend() ;
void setTrace(Uint32);
Uint32 getNoOfSections() const;
bool getSection(SegmentedSectionPtr & ptr, Uint32 sectionNo);
void setSection(SegmentedSectionPtr ptr, Uint32 sectionNo);
/**
* Old depricated methods...
*/
Uint32 length() const { return getLength();}
BlockReference senderBlockRef() const { return getSendersBlockRef();}
private:
void setLength(Uint32);
public:
#define VMS_DATA_SIZE \
(MAX_ATTRIBUTES_IN_TABLE + MAX_TUPLE_SIZE_IN_WORDS + MAX_KEY_SIZE_IN_WORDS)
#if VMS_DATA_SIZE > 8192
#error "VMSignal buffer is too small"
#endif
SignalHeader header; // 28 bytes
SegmentedSectionPtr m_sectionPtr[3];
union {
Uint32 theData[8192]; // 8192 32-bit words -> 32K Bytes
Uint64 dummyAlign;
};
void garbage_register();
};
inline
Uint32
Signal::getLength() const {
return header.theLength;
}
inline
Uint32
Signal::getTrace() const {
return header.theTrace;
}
inline
Uint32
Signal::getSendersBlockRef() const {
return header.theSendersBlockRef;
}
inline
const Uint32*
Signal::getDataPtr() const {
return &theData[0];
}
inline
Uint32*
Signal::getDataPtrSend() {
return &theData[0];
}
inline
void
Signal::setLength(Uint32 len){
header.theLength = len;
}
inline
void
Signal::setTrace(Uint32 t){
header.theTrace = t;
}
inline
Uint32
Signal::getNoOfSections() const {
return header.m_noOfSections;
}
inline
bool
Signal::getSection(SegmentedSectionPtr & ptr, Uint32 section){
if(section < header.m_noOfSections){
ptr = m_sectionPtr[section];
return true;
}
ptr.p = 0;
return false;
}
inline
void
Signal::setSection(SegmentedSectionPtr ptr, Uint32 sectionNo){
if(sectionNo != header.m_noOfSections || sectionNo > 2){
abort();
}
m_sectionPtr[sectionNo] = ptr;
header.m_noOfSections++;
}
inline
NodeReceiverGroup::NodeReceiverGroup() : m_block(0){
m_nodes.clear();
}
inline
NodeReceiverGroup::NodeReceiverGroup(Uint32 blockRef){
m_nodes.clear();
m_block = refToBlock(blockRef);
m_nodes.set(refToNode(blockRef));
}
inline
NodeReceiverGroup::NodeReceiverGroup(Uint32 blockNo, const NodeBitmask & nodes){
m_block = blockNo;
m_nodes = nodes;
}
#include "SignalCounter.hpp"
inline
NodeReceiverGroup::NodeReceiverGroup(Uint32 blockNo, const SignalCounter & nodes){
m_block = blockNo;
m_nodes = nodes.m_nodes;
}
inline
NodeReceiverGroup&
NodeReceiverGroup::operator=(BlockReference blockRef){
m_nodes.clear();
m_block = refToBlock(blockRef);
m_nodes.set(refToNode(blockRef));
return * this;
}
#endif
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