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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 */
#include "GCIContainer.hpp"
#include <NdbOut.hpp>
#include <NdbMem.h>
#include <new>
#include <rep/rep_version.hpp>
//#define GCICONTAINER_DEBUG
/*****************************************************************************
* Constructors / Destructors
*****************************************************************************/
GCIContainer::GCIContainer(Uint32 maxNoOfIds)
{
m_maxNoOfIds = maxNoOfIds;
gciRange = new GCIRange[maxNoOfIds * sizeof(GCIRange)];
for(Uint32 i = 0; i < maxNoOfIds; i++) {
gciRange[i].m_firstGCI = 1; // The empty interval = [1,0]
gciRange[i].m_lastGCI = 0;
}
theMutexPtr = NdbMutex_Create();
}
GCIContainer::~GCIContainer()
{
for(Uint32 i=0; i < m_bufferList.size(); i++) {
delete m_bufferList[i];
m_bufferList[i] = 0;
}
m_bufferList=0;
delete [] gciRange;
NdbMutex_Destroy(theMutexPtr);
}
/*****************************************************************************
* GCIBuffer Create / Destroy
*****************************************************************************/
GCIBuffer *
GCIContainer::createGCIBuffer(Uint32 gci, Uint32 id)
{
GCIBuffer * buf = new GCIBuffer(gci, id);
if (buf == NULL) REPABORT("Could not allocate new buffer");
m_bufferList.push_back(buf, true);
#ifdef GCICONTAINER_DEBUG
ndbout_c("GCIContainer: New buffer created (GCI: %d, Id: %d)", gci, id);
#endif
return buf;
}
/**
* Delete all GCI buffers strictly less than "gci"
*/
void
GCIContainer::destroyGCIBuffersBeforeGCI(Uint32 gci, Uint32 id)
{
for(Uint32 i = 0 ; i < m_bufferList.size(); i++) {
if(m_bufferList[i]->getGCI() < gci) {
#ifdef GCICONTAINER_DEBUG
ndbout_c("GCIContainer: Destroying buffer (GCI: %d, id: %d)",
m_bufferList[i]->getGCI(), id);
#endif
destroyGCIBuffer(i, id);
}
}
}
/**
* Delete one GCI Buffer
*/
bool
GCIContainer::destroyGCIBuffer(Uint32 gci, Uint32 id)
{
m_bufferList.lock();
for(Uint32 i = 0 ; i < m_bufferList.size(); i++) {
if((m_bufferList[i]->getGCI() == gci) &&
(m_bufferList[i]->getId() == id)) {
/**
* Delete the GCI Buffer
*/
delete m_bufferList[i];
m_bufferList[i] = 0;
/**
* Remove from the list of buffers stored in GCIContainer
*/
m_bufferList.erase(i,false);
m_bufferList.unlock();
/**
* Set info
*/
NdbMutex_Lock(theMutexPtr);
if(gciRange[id].m_firstGCI != gci)
RLOG(("WARNING! Buffer %d deleted from [%d-%d]",
gci, gciRange[id].m_firstGCI, gciRange[id].m_lastGCI));
gciRange[id].m_firstGCI++;
/**
* Normalize empty interval to [1,0]
*/
if (gciRange[id].m_firstGCI > gciRange[id].m_lastGCI){
gciRange[id].m_firstGCI = 1;
gciRange[id].m_lastGCI = 0;
}
NdbMutex_Unlock(theMutexPtr);
return true;
}
}
m_bufferList.unlock();
return false;
}
/*****************************************************************************
* GCIBuffer interface
*****************************************************************************/
GCIBuffer *
GCIContainer::getGCIBuffer(Uint32 gci, Uint32 id)
{
GCIBuffer * gciBuffer = 0;
m_bufferList.lock();
for(Uint32 i=0; i < m_bufferList.size(); i++) {
gciBuffer = m_bufferList[i];
if((gciBuffer->getGCI() == gci) && (gciBuffer->getId() == id)) {
m_bufferList.unlock();
return gciBuffer;
}
}
m_bufferList.unlock();
return 0;
}
void
GCIContainer::setCompleted(Uint32 gci, Uint32 id)
{
GCIBuffer * gciBuffer = getGCIBuffer(gci, id);
if(gciBuffer == 0) gciBuffer = createGCIBuffer(gci, id);
gciBuffer->setComplete();
#ifdef GCICONTAINER_DEBUG
ndbout_c("GCIContainer: Buffer completely stored in GCIContainer (GCI: %d)",
gci);
#endif
NdbMutex_Lock(theMutexPtr);
/**
* If this is the first GCI Buffer to be completed
* then both first and last must be updated.
* Subsequently, only the last value must be updated.
*/
if(gciRange[id].m_firstGCI == 1 && gciRange[id].m_lastGCI == 0) {
gciRange[id].m_firstGCI = gci;
gciRange[id].m_lastGCI = gci;
} else {
if (gci != gciRange[id].m_lastGCI + 1) {
RLOG(("WARNING! Non-consequtive buffer %u completed [%u-%u])",
gci, gciRange[id].m_firstGCI, gciRange[id].m_lastGCI));
}
gciRange[id].m_lastGCI = gci;
}
NdbMutex_Unlock(theMutexPtr);
}
void
GCIContainer::getAvailableGCIBuffers(Uint32 id, Uint32 * first, Uint32 * last)
{
NdbMutex_Lock(theMutexPtr);
*first = gciRange[id].m_firstGCI;
*last = gciRange[id].m_lastGCI;
NdbMutex_Unlock(theMutexPtr);
}
/*****************************************************************************
* Inserts
*****************************************************************************/
void
GCIContainer::insertMetaRecord(Uint32 id, Uint32 tableId,
class LinearSectionPtr ptr[3], Uint32 gci)
{
/**********************************************************
* 1. Find correct GCI Buffer (Doesn't exist? Create one)
**********************************************************/
GCIBuffer * gciBuffer = getGCIBuffer(gci, id);
if(gciBuffer == 0) gciBuffer = createGCIBuffer(gci, id);
/**********************************
* 2. Insert record into GCIBuffer
**********************************/
gciBuffer->insertMetaRecord(tableId, ptr);
}
void
GCIContainer::insertLogRecord(Uint32 id, Uint32 tableId, Uint32 operation,
class LinearSectionPtr ptr[3], Uint32 gci)
{
/*********************************************************
* 1. Find correct GCI Buffer (doesn't exist? create one)
*********************************************************/
GCIBuffer * gciBuffer = getGCIBuffer(gci, id);
if(gciBuffer == 0) gciBuffer = createGCIBuffer(gci, id);
/**********************************
* 2. Insert record into GCIBuffer
**********************************/
gciBuffer->insertLogRecord(tableId, operation, ptr);
}
void
GCIContainer::insertPage(Uint32 gci, Uint32 id,
char * dataPtr, Uint32 dataBLen)
{
/*********************************************************
* 1. Find correct GCI Buffer (doesn't exist? create one)
*********************************************************/
GCIBuffer * gciBuffer = getGCIBuffer(gci, id);
if(gciBuffer == 0) gciBuffer = createGCIBuffer(gci, id);
/********************************
* 2. Insert page into GCIBuffer
********************************/
gciBuffer->insertPage(gci, dataPtr, dataBLen);
}
bool
GCIContainer::reset()
{
/**
* Clear the intervals
*/
for(Uint32 i = 0; i < m_maxNoOfIds; i++) {
gciRange[i].m_firstGCI = 1; // The empty interval = [1,0]
gciRange[i].m_lastGCI = 0;
}
/**
* Destroy ALL gci buffers for ALL ids
*/
for(Uint32 i=0; i < m_bufferList.size(); i++) {
delete m_bufferList[i];
m_bufferList[i] = 0;
}
m_bufferList.clear();
return true;
}
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