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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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/**********************************************************************
* Name: NdbApiSignal.H
* Include:
* Link:
* Author: UABMNST Mona Natterkvist UAB/B/SD
* Date: 97----
* Version: 0.1
* Description: Interface between TIS and NDB
* Documentation:
* Adjust: 971204 UABMNST First version.
* Adjust: 000705 QABANAB Changes in Protocol2
* Comment:
*****************************************************************************/
#ifndef NdbApiSignal_H
#define NdbApiSignal_H
#include <kernel_types.h>
#include "TransporterFacade.hpp"
#include <TransporterDefinitions.hpp>
#include "Ndb.hpp"
#define CAST_PTR(X,Y) static_cast<X*>(static_cast<void*>(Y))
#define CAST_CONSTPTR(X,Y) static_cast<const X*>(static_cast<const void*>(Y))
/**
* A NdbApiSignal : public SignalHeader
*
* Stores the address to theData in theSignalId
*/
class NdbApiSignal : public SignalHeader
{
public:
NdbApiSignal(Ndb* ndb);
NdbApiSignal(BlockReference ref);
NdbApiSignal(const NdbApiSignal &);
NdbApiSignal(const SignalHeader &header)
: SignalHeader(header), theNextSignal(0), theRealData(0) {};
~NdbApiSignal();
void set(Uint8 trace,
Uint16 receiversBlockNumber,
Uint16 signalNumber,
Uint32 length);
void setData(Uint32 aWord, Uint32 aDataNo);
Uint32 readData(Uint32 aDataNo) const; // Read word in signal
int setSignal(int NdbSignalType); // Set signal header
int readSignalNumber(); // Read signal number
Uint32 getLength() const;
void setLength(Uint32 aLength);
void next(NdbApiSignal* anApiSignal);
NdbApiSignal* next();
const Uint32 * getDataPtr() const;
Uint32 * getDataPtrSend();
NodeId get_sender_node();
/**
* Fragmentation
*/
bool isFirstFragment() const { return m_fragmentInfo <= 1;}
bool isLastFragment() const {
return m_fragmentInfo == 0 || m_fragmentInfo == 3;
}
Uint32 getFragmentId() const {
return (m_fragmentInfo == 0 ? 0 : getDataPtr()[theLength - 1]);
}
private:
friend void execute(void * callbackObj,
struct SignalHeader * const header,
Uint8 prio, Uint32 * const theData,
LinearSectionPtr ptr[3]);
void setDataPtr(Uint32 *);
friend class NdbTransaction;
friend class NdbScanReceiver;
friend class Table;
void copyFrom(const NdbApiSignal * src);
/**
* Only used when creating a signal in the api
*/
Uint32 theData[25];
NdbApiSignal *theNextSignal;
Uint32 *theRealData;
};
/**********************************************************************
NodeId get_sender_node
Remark: Get the node id of the sender
***********************************************************************/
inline
NodeId
NdbApiSignal::get_sender_node()
{
return refToNode(theSendersBlockRef);
}
/**********************************************************************
void getLength
Remark: Get the length of the signal.
******************************************************************************/
inline
Uint32
NdbApiSignal::getLength() const{
return theLength;
}
/**********************************************************************
void setLength
Parameters: aLength: Signal length
Remark: Set the length in the signal.
******************************************************************************/
inline
void
NdbApiSignal::setLength(Uint32 aLength){
theLength = aLength;
}
/**********************************************************************
void next(NdbApiSignal* aSignal);
Parameters: aSignal: Signal object.
Remark: Insert signal rear in a linked list.
*****************************************************************************/
inline
void
NdbApiSignal::next(NdbApiSignal* aSignal){
theNextSignal = aSignal;
}
/**********************************************************************
NdbApiSignal* next();
Return Value: Return theNext signal object if the next was successful.
Return NULL: In all other case.
Remark: Read the theNext in signal.
*****************************************************************************/
inline
NdbApiSignal*
NdbApiSignal::next(){
return theNextSignal;
}
/**********************************************************************
int readSignalNo();
Return Value: Return the signalNumber.
Remark: Read signal number
*****************************************************************************/
inline
int
NdbApiSignal::readSignalNumber()
{
return (int)theVerId_signalNumber;
}
/**********************************************************************
Uint32 readData(Uint32 aDataNo);
Return Value: Return Data word in a signal.
Return -1: In all other case.
aDataNo: Data number in signal.
Remark: Return the dataWord information in a signal for a dataNo.
******************************************************************************/
inline
Uint32
NdbApiSignal::readData(Uint32 aDataNo) const {
return getDataPtr()[aDataNo-1];
}
/**********************************************************************
int setData(Uint32 aWord, int aDataNo);
Return Value: Return 0 : setData was successful.
Return -1: In all other case.
Parameters: aWord: Data word.
aDataNo: Data number in signal.
Remark: Set Data word in signal 1 - 25
******************************************************************************/
inline
void
NdbApiSignal::setData(Uint32 aWord, Uint32 aDataNo){
getDataPtrSend()[aDataNo -1] = aWord;
}
/**
* Return pointer to data structure
*/
inline
const Uint32 *
NdbApiSignal::getDataPtr() const {
return theRealData;
}
inline
Uint32 *
NdbApiSignal::getDataPtrSend(){
return (Uint32*)&theData[0];
}
inline
void
NdbApiSignal::setDataPtr(Uint32 * ptr){
theRealData = ptr;
}
#endif
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