/**************************************************************** * DESCRIPTION: * Private Function for setting the last Fbo on header * ***************************************************************/ const int IndexList::readCurBlk() { int rc = NO_ERROR; CommBlock cb; if (m_lbid == m_hdrLbid) return NO_ERROR; cb.file.oid = m_oid; cb.file.pFile = m_pFile; if ((m_curBlock.lbid == m_lbid) && (m_curBlock.state != BLK_INIT)) return NO_ERROR; if (m_curBlock.state == BLK_WRITE) rc = writeCurBlk(); if ((m_curBlock.state == BLK_INIT) || (m_curBlock.lbid != m_lbid)) { memset(m_curBlock.data, 0, sizeof(m_curBlock.data ) ); rc = readDBFile(cb, m_curBlock.data, m_lbid); if (rc != NO_ERROR) return rc; m_curBlock.dirty = true; m_curBlock.lbid = m_lbid; m_curBlock.state = BLK_READ; } return rc; }
/**************************************************************** * DESCRIPTION: * Private Function for getting the header * ***************************************************************/ const int IndexList::getHdrInfo(IdxEmptyListEntry* curIdxRidListHdrPtr) { int rc = NO_ERROR; CommBlock cb; cb.file.oid = m_oid; cb.file.pFile = m_pFile; //Get the Header block, sub-block and entry info from Index Tree m_hdrLbid = curIdxRidListHdrPtr->fbo; m_hdrSbid = curIdxRidListHdrPtr->sbid; m_hdrEntry = curIdxRidListHdrPtr->entry; memset(m_hdrBlock.data, 0, sizeof(m_hdrBlock.data)); m_hdrBlock.dirty = false; m_hdrBlock.state = BLK_INIT; m_hdrBlock.no = INVALID_NUM; m_hdrBlock.lbid = INVALID_LBID; //header is 4 entries LIST_HDR_SIZE bytes memset( &m_curIdxRidListHdr, 0, LIST_HDR_SIZE ); //Get the old header out rc = readDBFile( cb, &m_hdrBlock, m_hdrLbid ); m_hdrBlock.dirty = true; m_hdrBlock.state = BLK_READ; m_hdrBlock.lbid = m_hdrLbid; getSubBlockEntry( m_hdrBlock.data, m_hdrSbid, m_hdrEntry, LIST_HDR_SIZE, &m_curIdxRidListHdr ); if (m_curIdxRidListHdr.nextIdxRidListPtr.type == (int)LIST_SUBBLOCK_TYPE) rc = getLastLbid(); else m_lastLbid = INVALID_LBID; return rc; }
const int DbFileOp::readSubBlockEntry( CommBlock& cb, DataBlock* block, const uint64_t lbid, const int sbid, const int entryNo, const int width, void* pStruct ) { RETURN_ON_ERROR( readDBFile( cb, block->data, lbid ) ); getSubBlockEntry( block->data, sbid, entryNo, width, pStruct ); return NO_ERROR; }
int DbFileOp::readDBFile( IDBDataFile* pFile, DataBlock* block, const uint64_t lbid, const bool isFbo ) { block->dirty = false; block->no = lbid; Stats::incIoBlockRead(); return readDBFile( pFile, block->data, lbid, isFbo ); }
int DbFileOp::readDBFile( CommBlock& cb, unsigned char* readBuf, const uint64_t lbid ) { CacheKey key; if( Cache::getUseCache() ) { if( Cache::cacheKeyExist( cb.file.oid, lbid ) ) { key = Cache::getCacheKey( cb.file.oid, lbid ); RETURN_ON_ERROR( Cache::loadCacheBlock( key, readBuf ) ); return NO_ERROR; } } RETURN_ON_ERROR( readDBFile( cb.file.pFile, readBuf, lbid ) ); if( Cache::getUseCache() ) { int fbo = lbid; uint16_t dbRoot; uint32_t partition; uint16_t segment; RETURN_ON_ERROR( BRMWrapper::getInstance()->getFboOffset( lbid, dbRoot, partition, segment, fbo ) ); if( Cache::getListSize( FREE_LIST ) == 0 ) { if ( isDebug( DEBUG_1 ) ) { printf( "\nBefore flushing cache " ); Cache::printCacheList(); } // flush cache to give up more space RETURN_ON_ERROR( flushCache() ); if ( isDebug( DEBUG_1 ) ) { printf( "\nAfter flushing cache " ); Cache::printCacheList(); } } RETURN_ON_ERROR( Cache::insertLRUList( cb, lbid, fbo, readBuf ) ); } return NO_ERROR; }
/**************************************************************** * DESCRIPTION: * Private Function for getting block zero * either it is 0 or get it from BRM * ***************************************************************/ const int IndexList::resetBlkZero(uint64_t& lbid0) { int rc = NO_ERROR; CommBlock cb; cb.file.oid = m_oid; cb.file.pFile = m_pFile; memset( m_blockZero.data, 0, sizeof(m_blockZero.data)); m_blockZero.dirty = false; m_blockZero.state = BLK_INIT; #ifdef BROKEN_BY_MULTIPLE_FILES_PER_OID rc = BRMWrapper::getInstance()->getBrmInfo( m_oid, 0, lbid0 ); #endif if (rc != NO_ERROR) return rc; rc = readDBFile( cb, m_blockZero.data, lbid0 ); m_blockZero.lbid = lbid0; m_blockZero.state = BLK_READ; return rc; }
const int FreeMgr::releaseSubblock( CommBlock &cb, DataBlock* blockZero, const int freemgr_type, IdxEmptyListEntry* assignPtr ) { int rc; // return code from file ops DataBlock workBlock; DataBlock extraBlock; int listOffset; // entry in block zero of head pointer IdxEmptyListEntry emptyPtr, emptyMap ; uint64_t numBlocks; FILE* indexFile; indexFile = cb.file.pFile; /** * Release sub-block - handle de-allocation of only sub-blocks * This makes the assign/release code for smaller segments simpler and * separates the tasks of handling the list containers and the list contents * When called, we look at the bucket indicated as head of chain and if it full * or not present (no room left in chain) then insert the returned SB as a bucket and * move the head pointer **/ //if( isDebug( DEBUG_1 )) { printf("DBG: releaseSubblock\n"); } if( isDebug( DEBUG_2 )) { cout<<"DBG: releasing sb fbo "<<assignPtr->fbo<<" sbid "<<assignPtr->sbid<<" entry "<<assignPtr->entry<<" from "<<((freemgr_type==LIST)?"LIST":"TREE")<<" (type is "<<((assignPtr->type==EMPTY_PTR)?"EMPTY_PTR":"Not EMPTY_PTR")<<")\n"; } if (!assignPtr){ // printf ("DBG: Bad pointer: assignPtr is zero\n"); return ERR_INVALID_PARAM; } if (!blockZero){ printf ("DBG: Bad pointer: pointer for blockZero is zero\n"); return ERR_INVALID_PARAM; } numBlocks = getFileSize( indexFile )/BYTE_PER_BLOCK ; /* if (assignPtr->fbo > numBlocks) { if( isDebug( DEBUG_1 )) { printf("DBG: Weirdness in releaseSubblock.. assignPtr.fbo > numBlocks (%llu %llu)\n", assignPtr->fbo, numBlocks );} return ERR_FM_BAD_FBO; }*/ if (assignPtr->type != EMPTY_PTR) { printf("DBG: Weirdness in releaseSubblock.. tried to return a pointer with type %i (expected %i)\n", (unsigned int)assignPtr->type, EMPTY_PTR ); return ERR_FM_BAD_TYPE; } if ( assignPtr->group != ENTRY_32 ) { printf("DBG: Weirdness in releaseSubblock.. tried to return a pointer from group %i to subblock group\n", (unsigned int)assignPtr->group ); return ERR_INVALID_PARAM; } //find the start of the chain listOffset = calcPtrOffset( ENTRY_32 ); getSubBlockEntry( blockZero, 0, listOffset, 8, &emptyPtr ); if( isDebug( DEBUG_2 )) { cout<<"DBG: EM (sb release 1) sb fbo "<<emptyPtr.fbo<<" sbid "<<emptyPtr.sbid<<" entry "<<emptyPtr.entry<<"\n"; } //sub block is full or chain empty if (emptyPtr.entry == ENTRY_PER_SUBBLOCK-1 || emptyPtr.fbo==0) { // change type from EMPTY_PTR to EMPTY_LIST assignPtr->type = EMPTY_LIST; //if( isDebug( DEBUG_1 )) { printf("DBG: No room in subblock chain - need to add a sub-block\n"); } if( isDebug( DEBUG_2 )) { cout<<"DBG: Change head pointer to fbo "<<assignPtr->fbo<<" sbid "<<assignPtr->sbid<<" entry "<<assignPtr->entry<<"\n"; } // change head pointer to released segment setSubBlockEntry( blockZero, 0, listOffset, 8, assignPtr ); blockZero->dirty = 1; // read in released segment to set llp of new block to point to current head of chain rc = readDBFile( cb, extraBlock.data, assignPtr->fbo ); if (rc != NO_ERROR){ if (isDebug( DEBUG_1 )){ cout<<"DBG: File error during releaseSegment (2), rc: "<<rc<<" fbo/lbid: "<<assignPtr->fbo<<"\n"; } return rc; } if( isDebug( DEBUG_2 )) { cout<<"DBG: Set LLP for fbo "<<assignPtr->fbo<<" sbid "<<assignPtr->sbid<<" entry "<<assignPtr->entry<<"to fbo "<<emptyPtr.fbo<<" sbid "<<emptyPtr.sbid<<" entry "<<emptyPtr.entry<<"\n"; } if( isDebug( DEBUG_3)){ printf("Before\n"); printMemSubBlock( &extraBlock, assignPtr->sbid ); } emptyPtr.type = EMPTY_LIST; //memset( extraBlock.data, 0, BYTE_PER_SUBBLOCK); setSubBlockEntry( extraBlock.data, assignPtr->sbid, 0, 8, &emptyPtr ); rc = writeDBFile( cb, &extraBlock, assignPtr->fbo ); if (rc != NO_ERROR){ return rc; } if( isDebug( DEBUG_2 )) { getSubBlockEntry( blockZero, 0, listOffset, 8, &emptyMap ); cout<<"DBG: EM (sb release 2) sb fbo "<<emptyMap.fbo<<" sbid "<<emptyMap.sbid<<" entry "<<emptyMap.entry<<"\n"; } if( isDebug( DEBUG_3)){ printf("After\n"); printMemSubBlock( &extraBlock, assignPtr->sbid ); } } else { // emptyPtr.entry++; rc = readDBFile( cb, workBlock.data, emptyPtr.fbo ); if (rc != NO_ERROR) { if (isDebug( DEBUG_1 )) { printf("DBG: File error during releaseSubblock\n"); } return rc; } if( isDebug( DEBUG_3)){ printf("Before\n"); printMemSubBlock( &workBlock, emptyPtr.sbid ); } setSubBlockEntry( workBlock.data, emptyPtr.sbid, emptyPtr.entry, 8, assignPtr ); rc = writeDBFile( cb, &workBlock, emptyPtr.fbo ); if (rc != NO_ERROR){ return rc; } if( isDebug( DEBUG_2 )) { cout<<"DBG: setting emptyPtr sb fbo "<<emptyPtr.fbo<<" sbid "<<emptyPtr.sbid<<" entry "<<emptyPtr.entry<<"\n"; } if( isDebug( DEBUG_3)){ printf("After\n"); printMemSubBlock( &workBlock, emptyPtr.sbid ); } emptyPtr.type = EMPTY_LIST; emptyPtr.group = ENTRY_32; setSubBlockEntry( blockZero, 0, listOffset, 8, &emptyPtr ); blockZero->dirty = 1; } uint64_t count; getSubBlockEntry( blockZero, 0, calcStatOffset(ENTRY_32) , 8, &count ); count++; setSubBlockEntry( blockZero, 0, calcStatOffset(ENTRY_32) , 8, &count ); return NO_ERROR; }
const int FreeMgr::releaseSegment( CommBlock &cb, DataBlock* blockZero, const int freemgr_type, const IdxTreeGroupType segmentType, IdxEmptyListEntry* assignPtr ) { int rc; // return code from file ops DataBlock workBlock; DataBlock extraBlock; int listOffset; // entry in block zero of head pointer IdxEmptyListEntry emptyPtr; IdxEmptyListEntry newSb; uint64_t numBlocks; FILE* indexFile; indexFile = cb.file.pFile; if (!assignPtr){ // printf ("DBG: Bad pointer: assignPtr is zero\n"); return ERR_INVALID_PARAM; } if (!blockZero){ // printf ("DBG: Bad pointer: blockZero is zero\n"); return ERR_INVALID_PARAM; } if( isDebug( DEBUG_3 )) { printf("DBG: release ENTRY_%i segment \n", 1<<(unsigned int)segmentType); } if( isDebug( DEBUG_2 )) { cout<<"DBG: releasing fbo "<<assignPtr->fbo<<" sbid "<<assignPtr->sbid<<" entry "<<assignPtr->entry<<" from "<<((freemgr_type==LIST)?"LIST":"TREE")<<" chain ENTRY_"<<(1<<segmentType)<<" (type is "<<((assignPtr->type==EMPTY_PTR)?"EMPTY_PTR":"Not EMPTY_PTR")<<")\n"; } numBlocks = getFileSize( indexFile )/BYTE_PER_BLOCK ; /* if (assignPtr->fbo > numBlocks) { if( isDebug( DEBUG_1 )) { printf("DBG: Weirdness in releaseSegment.. assignPtr.fbo > numBlocks (%llu %llu)\n", assignPtr->fbo, numBlocks );}; return ERR_FM_BAD_FBO; }*/ if (assignPtr->type != EMPTY_PTR) { // printf("DBG: Weirdness in releaseSegment.. tried to return a pointer with type %i (expected %i)\n", (unsigned int)assignPtr->type, EMPTY_PTR ); assignPtr->type = EMPTY_PTR; // return ERR_FM_BAD_TYPE; // do not exit } if ( assignPtr->group != (uint64_t)segmentType ) { // printf("DBG: Weirdness in releaseSegment.. tried to return a pointer from group %i to group %i\n", (unsigned int)assignPtr->group, segmentType ); return ERR_FM_RELEASE_ERR; } //find the start of the chain if (segmentType == ENTRY_32) { rc = releaseSubblock( cb, blockZero, freemgr_type, assignPtr); if (rc != NO_ERROR) { // printf("DBG: Error releasing sb\n"); } return rc; } listOffset = calcPtrOffset( segmentType ); if (freemgr_type==LIST && !(segmentType== ENTRY_4 || segmentType== ENTRY_BLK)) { printf("DBG: Assign segment size illegal %i\n", (unsigned int)segmentType); return ERR_INVALID_PARAM; // should not have got here so quit with error } getSubBlockEntry( blockZero, 0, listOffset, 8, &emptyPtr ); /* if (emptyPtr.fbo > numBlocks) { if( isDebug( DEBUG_1 )) { printf("DBG: Weirdness in releaseSegment.. emptyPtr.fbo > numBlocks (%llu %llu)\n", emptyPtr.fbo, numBlocks );} return ERR_FM_BAD_FBO; }*/ //sub block is full or chain never started if (emptyPtr.entry == ENTRY_PER_SUBBLOCK-1 || emptyPtr.fbo==0) { if( isDebug( DEBUG_3 )) { printf("DBG: No room in chain %i - need to add a sub-block\n", (unsigned int)segmentType); } if( isDebug( DEBUG_2 )) { cout<<"DBG: Empty ptr fbo "<<emptyPtr.fbo<<" sbid "<<emptyPtr.sbid<<" entry "<<emptyPtr.entry<<"\n"; } //ask for a new sb to extend chain rc = assignSubblock( cb, blockZero, freemgr_type, &newSb); if (rc != NO_ERROR) { printf("DBG: Error extending chain\n"); return rc; } if( isDebug( DEBUG_2 )) { cout<<"DBG: release segment, new SB is fbo "<<newSb.fbo<<" sbid "<<newSb.sbid<<" entry "<<newSb.entry<<"\n"; } rc = readDBFile( cb, extraBlock.data, newSb.fbo ); if (rc != NO_ERROR) { if (isDebug( DEBUG_1 )){printf("DBG: File error during releaseSegment (3)\n");} return rc; } emptyPtr.type = EMPTY_LIST; // writing into the LLP field so set type accordingly setSubBlockEntry( extraBlock.data, newSb.sbid, 0, 8, &emptyPtr ); setSubBlockEntry( extraBlock.data, newSb.sbid, 1, 8, assignPtr ); rc = writeDBFile( cb, &extraBlock, newSb.fbo ); if (rc != NO_ERROR) { if (isDebug( DEBUG_1 )){printf("DBG: File error during releaseSegment (4)\n");} return rc; } newSb.entry = 1; newSb.type = EMPTY_LIST; newSb.group = segmentType; setSubBlockEntry( blockZero, 0, listOffset, 8, &newSb ); blockZero->dirty = 1; uint64_t count; getSubBlockEntry( blockZero, 0, calcStatOffset(segmentType) , 8, &count ); count++; setSubBlockEntry( blockZero, 0, calcStatOffset(segmentType) , 8, &count ); return NO_ERROR ; } else { // emptyPtr.entry++; rc = readDBFile( cb, workBlock.data, emptyPtr.fbo ); if (rc != NO_ERROR){ if (isDebug( DEBUG_1 )){ printf("DBG: File error during releaseSegment\n"); } return rc; } if( isDebug( DEBUG_2 )) { cout<<"DBG: Empty map ENTRY_"<<( 1<<segmentType)<<" is fbo "<<emptyPtr.fbo<<" sbid "<<emptyPtr.sbid<<" entry "<<emptyPtr.entry<<"\n"; } setSubBlockEntry( workBlock.data, emptyPtr.sbid, emptyPtr.entry, 8, assignPtr ); rc = writeDBFile( cb, workBlock.data, emptyPtr.fbo ); if (rc != NO_ERROR){ return rc; } emptyPtr.type = EMPTY_LIST; emptyPtr.group = segmentType; setSubBlockEntry( blockZero, 0, listOffset, 8, &emptyPtr ); blockZero->dirty = 1;//sub block is full or chain never started } uint64_t count; getSubBlockEntry( blockZero, 0, calcStatOffset(segmentType) , 8, &count ); count++; setSubBlockEntry( blockZero, 0, calcStatOffset(segmentType) , 8, &count ); return NO_ERROR; }
const int FreeMgr::assignSubblock( CommBlock &cb, DataBlock* blockZero, const int freemgrType, IdxEmptyListEntry* assignPtr ) { int rc; // return code from file ops DataBlock workBlock, tempBlock; int listOffset; // entry in block zero of head pointer IdxEmptyListEntry emptyEntry; IdxEmptyListEntry emptyPtr, emptyMap; IdxEmptyListEntry newBlock; uint64_t numBlocks; FILE* indexFile; indexFile = cb.file.pFile; /** * Separated subblock assignment out from general segment assignment * Reduces the hoops to jump through **/ numBlocks = getFileSize( indexFile )/BYTE_PER_BLOCK ; if( isDebug( DEBUG_3 )) { printf("DBG: Assign subblock \n"); } //find the start of the chain listOffset = calcPtrOffset( ENTRY_32 ); getSubBlockEntry( blockZero, 0, listOffset, 8, &emptyPtr ); if( isDebug( DEBUG_2 )) { cout<<"DBG: EM (start assign) sb fbo "<<emptyPtr.fbo<<" sbid "<<emptyPtr.sbid<<" entry "<<emptyPtr.entry<<"\n"; } if (emptyPtr.type != EMPTY_LIST ){ return ERR_FM_BAD_TYPE; } // if (emptyPtr.fbo > numBlocks) // { // if( isDebug( DEBUG_1 )) { printf("DBG: Weirdness in assignSubblock.. emptyPtr.fbo > numBlocks\n"); } // return ERR_FM_BAD_FBO; // } // follow the chain to the empty entry rc = readDBFile( cb, workBlock.data, emptyPtr.fbo ); if (rc != NO_ERROR) { // printf("DBG: RC Weirdness: rc is %i", rc); return rc; } getSubBlockEntry( &workBlock, emptyPtr.sbid, emptyPtr.entry, 8, &emptyEntry ); if( isDebug( DEBUG_2 )) { cout<<"DBG: Next avail sb fbo "<<emptyEntry.fbo<<" sbid "<<" entry "<<emptyEntry.entry<<"\n"; } if (emptyEntry.fbo == 0) // then nowhere to go.. exit { //if( isDebug( DEBUG_1 )) { printf("DBG: No space in subblock list\n"); } if( isDebug( DEBUG_2 )) { cout<<"DBG: fbo "<<emptyEntry.fbo<<" sbid "<<emptyEntry.sbid<<" entry "<<emptyEntry.entry<<"\n"; } //-- try and assign from BLOCK list // printf("Go ask for a block\n"); rc = assignSegment( cb, blockZero, freemgrType, ENTRY_BLK, &newBlock); // rc = extendFreespace( indexFile, blockZero, freemgrType ); if (rc != NO_ERROR){ if( isDebug( DEBUG_1 )) { printf("DBG: Could not get block from block list\n"); } return rc; } // got a block so now split it newBlock.entry = 0; newBlock.group = ENTRY_32; newBlock.type = EMPTY_PTR; emptyEntry = newBlock; //-- assign almost all sub blocks - keep last one int sbIdx; for (sbIdx=BYTE_PER_BLOCK/BYTE_PER_SUBBLOCK-1; sbIdx >0; sbIdx--) { if( isDebug( DEBUG_3 )) { cout<<"DBG: Working on fbo "<<newBlock.fbo<<" sbid "<<sbIdx<<"\n"; } emptyEntry.sbid = sbIdx; emptyEntry.type = EMPTY_PTR; rc = releaseSubblock( cb, blockZero, freemgrType, &emptyEntry ); if (rc != NO_ERROR) { printf("DBG: Error releasing sb\n"); return rc; } } emptyEntry.sbid=0; } if ((emptyEntry.type != EMPTY_LIST) && (emptyEntry.type != EMPTY_PTR)) { if( isDebug( DEBUG_0 )) { printf("WTF: Bad entry in in subblock list- type is %i (expected %i or %i)\n", (unsigned int)emptyEntry.type, EMPTY_PTR, EMPTY_LIST); } if( isDebug( DEBUG_2 )) { cout<<"DBG: fbo "<<emptyEntry.fbo<<" sbid "<<emptyEntry.sbid<<" entry "<<emptyEntry.entry<<"\n"; } return ERR_FM_BAD_TYPE; } if (emptyEntry.type == EMPTY_PTR) { // this is what we expect normally emptyPtr.entry--; // only decrement if we didn't just drain a bucket setSubBlockEntry( blockZero, 0, listOffset, 8, &emptyPtr ); memcpy(assignPtr, &emptyEntry, 8); } else if (emptyEntry.type == EMPTY_LIST && emptyPtr.entry == 0 ) { if (emptyPtr.entry >0) printf("\nWTF!! %i\n", (unsigned int) emptyPtr.entry); // reached end of this bucket (should release it for re-use) // this is not the typical case.. if( isDebug( DEBUG_3 )) { cout<<"DBG: Drained bucket sb fbo "<<emptyPtr.fbo<<" sbid "<<emptyPtr.sbid<<" entry "<<emptyPtr.entry<<"\n"; } //blank the llp rc = readDBFile( cb, tempBlock.data, emptyPtr.fbo ); if (rc != NO_ERROR) { if (isDebug( DEBUG_1 )){ cout<<"DBG: File error during releaseSubblock, fbo/lbid: "<<emptyPtr.fbo<<"\n"; } return rc; } nullPtr(&emptyMap); // zero out the entry setSubBlockEntry( tempBlock.data, emptyPtr.sbid, 0, 8, &emptyMap ); rc = writeDBFile( cb, &tempBlock, emptyPtr.fbo ); if (rc != NO_ERROR){ return rc; } memcpy(assignPtr, &emptyPtr, 8); assignPtr->type = EMPTY_PTR; if( isDebug( DEBUG_2 )) { cout<<"DBG: Change head pointer to fbo "<<emptyEntry.fbo<<" sbid "<<emptyEntry.sbid<<" entry "<<emptyEntry.entry<<"\n"; } setSubBlockEntry( blockZero, 0, listOffset, 8, &emptyEntry ); } else { printf("DBG: Weirdness - not list and not ptr\n"); } // printf("DBG: Assigned sb fbo %llu sbid %u entry %u\n", assignPtr->fbo, (unsigned int)assignPtr->sbid, (unsigned int)assignPtr->entry); getSubBlockEntry( blockZero, 0, listOffset, 8, &emptyMap ); if(isDebug(DEBUG_3)){ cout<<"DBG: EM (sb assign 1) sb fbo "<<emptyMap.fbo<<" sbid "<<emptyMap.sbid<<" entry "<<emptyMap.entry<<"\n"; } blockZero->dirty = 1; uint64_t count; getSubBlockEntry( blockZero, 0, calcStatOffset(ENTRY_32) , 8, &count ); count--; setSubBlockEntry( blockZero, 0, calcStatOffset(ENTRY_32) , 8, &count ); // -- workblock may have changed on disk since it was read.. making the writeDBfile dangerous without a readDBfile first nullPtr(&emptyMap); // zero out the entry readDBFile( cb, &workBlock, emptyPtr.fbo ); setSubBlockEntry( workBlock.data, emptyPtr.sbid, emptyPtr.entry+1, 8, &emptyMap ); rc = writeDBFile( cb, &workBlock, emptyPtr.fbo ); // -- // if( isDebug( DEBUG_3 )) { printf("DBG: Assign subblock -- all done\n"); } return NO_ERROR; }
const int FreeMgr::assignSegment( CommBlock &cb, DataBlock* blockZero, const int freemgr_type, const IdxTreeGroupType segmentType, IdxEmptyListEntry* assignPtr ) { int rc; // return code from file ops DataBlock workBlock; int listOffset; // entry in block zero of head pointer IdxEmptyListEntry emptyEntry; IdxEmptyListEntry emptyPtr; IdxEmptyListEntry emptyMap; uint64_t numBlocks; IdxEmptyListEntry newSb; FILE* indexFile; indexFile = cb.file.pFile; if( isDebug( DEBUG_3 )) { printf("DBG: Assign ENTRY_%i segment in %s\n", 1<<(unsigned int)segmentType,(freemgr_type==LIST)?"LIST":"TREE"); } /* Check all input parameters are ok */ if (!blockZero){ if( isDebug( DEBUG_1 )) { printf ("DBG: Bad pointer: blockZero is zero\n"); } return ERR_INVALID_PARAM; } if (!assignPtr) { if( isDebug( DEBUG_1 )) { printf ("DBG: Bad pointer: assignPtr is zero\n"); } return ERR_INVALID_PARAM; } if (freemgr_type != TREE && freemgr_type!= LIST) { if( isDebug( DEBUG_0 )) { printf ("DBG: assignSegment: Must be TREE or LIST\n");} return ERR_INVALID_PARAM; } numBlocks = getFileSize( indexFile )/BYTE_PER_BLOCK ; //find the start of the chain if (segmentType == ENTRY_32) { rc = assignSubblock( cb, blockZero, freemgr_type, assignPtr); if (rc != NO_ERROR) { if( isDebug( DEBUG_1 )) { printf("DBG: Error assigning sb (rc=%i)\n", rc); } } return rc; } listOffset = calcPtrOffset( segmentType ); if (freemgr_type==LIST && !(segmentType== ENTRY_4 || segmentType== ENTRY_BLK)) { if( isDebug( DEBUG_1 )) { printf("DBG: Assign segment size illegal %i\n", (unsigned int)segmentType); } return ERR_INVALID_PARAM; // should not have got here so quit with error } // read Empty Map in sb0 getSubBlockEntry( blockZero, 0, listOffset, 8, &emptyPtr ); if( isDebug( DEBUG_2 )) { cout<<"DBG: Empty map ENTRY_"<<(1<<segmentType)<<" was fbo "<<emptyPtr.fbo<<" sbid "<<(unsigned int)emptyPtr.sbid<<" entry "<<(unsigned int)emptyPtr.entry<<"\n"; } /* if (emptyPtr.fbo > numBlocks) { printf("DBG: Weirdness in assignSegment.. emptyPtr.fbo > numBlocks\n"); return ERR_FM_BAD_FBO; }*/ // check to see if queue has been built // if not then assign a container block, add LLP in entry 0 pointing to nothing if (emptyPtr.fbo == 0){ if( isDebug( DEBUG_3 )) { printf("DBG: Need to add sb to chain and entries to sb\n"); } // cannot assign more space to block list from a smaller list.. need to extend the file if ( segmentType == ENTRY_BLK ) { if ( isDebug( DEBUG_1 )){ printf("Out of space in BLOCK list, quitting\n"); } rc = extendFreespace( cb, blockZero, freemgr_type ); if (rc != NO_ERROR){ if (isDebug( DEBUG_3 )){ printf("DBG: Error extending file\n"); } return rc; } } rc = assignSubblock( cb, blockZero, freemgr_type, &emptyPtr); if (rc != NO_ERROR){ printf("DBG: Error extending chain\n"); return rc; } rc = readDBFile( cb, workBlock.data, emptyPtr.fbo ); if (rc != NO_ERROR){ /*printf("DBG: Error reading newly allocated sb\n");*/ return rc; } // update map to point to new bucket setSubBlockEntry( blockZero, 0, listOffset, 8, &emptyPtr); nullPtr(&emptyEntry); emptyEntry.type = EMPTY_LIST; emptyEntry.group = segmentType; setSubBlockEntry( workBlock.data, emptyPtr.sbid, 0, 8, &emptyEntry); // store head ptr rc = writeDBFile( cb, workBlock.data, emptyPtr.fbo ); if (rc != NO_ERROR){ return rc; } if( isDebug( DEBUG_2 )) { cout<<"DBG: Added fbo "<<emptyPtr.fbo<<" sbid "<<(unsigned int)emptyPtr.sbid<<" as bucket to chain ENTRY_"<<(1<<segmentType)<<"in"<<((freemgr_type==LIST)?"LIST":"TREE")<<"\n"; } } // follow the chain to the head container rc = readDBFile( cb, workBlock.data, emptyPtr.fbo ); if (rc != NO_ERROR) { if( isDebug( DEBUG_1 )) { cout<<"DBG: Error reading block ("<<emptyPtr.fbo<<") during segmentAssign: rc is "<<rc; } return rc; } getSubBlockEntry( &workBlock, emptyPtr.sbid, emptyPtr.entry, 8, &emptyEntry ); if ((emptyEntry.type != EMPTY_LIST) && (emptyEntry.type != EMPTY_PTR)) { if( isDebug( DEBUG_0 )) { printf("WTF: Bad entry in ENTRY_%i chain - type is %i (expected %i or %i)\n", 1<<segmentType, (unsigned int)emptyEntry.type, EMPTY_PTR, EMPTY_LIST ); printMemSubBlock( &workBlock, emptyPtr.sbid ); } if( isDebug( DEBUG_2 )) { cout<<"DBG: fbo "<<emptyEntry.fbo<<" sbid "<<(unsigned int)emptyEntry.sbid<<" entry "<< (unsigned int)emptyEntry.entry<<" chain ENTRY_"<<(1<<segmentType)<<"in"<<((freemgr_type==LIST)?"LIST":"TREE")<<"\n"; } return ERR_FM_BAD_TYPE; } if ((emptyEntry.fbo == 0) && (emptyEntry.type == EMPTY_PTR)) { if ( isDebug( DEBUG_0 )) {printf("DBG: Bad entry in %i list - found EMPTY_PTR but indicates block 0\n", 1<<segmentType );} return ERR_FM_BAD_TYPE; } if ((emptyEntry.fbo == 0) && (emptyEntry.type == EMPTY_LIST)) { /** * if at the end of the rainbow, in a bucket with no entries, fill the bucket * Allocate a sub block and split it into parts **/ // cannot assign more space to block list from a smaller list.. need to extend the file if ( segmentType == ENTRY_BLK ) { if ( isDebug( DEBUG_1 )){ printf("\nNeed to extend block\n");} if ( isDebug( DEBUG_1 )){ printf("Out of space in BLOCK list\n"); } rc = extendFreespace( cb, blockZero, freemgr_type ); if (rc != NO_ERROR){ if (isDebug( DEBUG_3 )){ printf("DBG: Error extending file\n"); } return rc; } getSubBlockEntry( blockZero, 0, listOffset, 8, &emptyPtr ); rc = readDBFile( cb, workBlock.data, emptyPtr.fbo ); getSubBlockEntry( &workBlock, emptyPtr.sbid, emptyPtr.entry, 8, &emptyEntry ); } else { rc = assignSubblock( cb, blockZero, freemgr_type, &newSb); if (rc != NO_ERROR){ // printf("DBG: Error extending chain\n"); return rc; } if (newSb.entry != 0){ printf("WTF: Entry should be 0 after assign from sb list, instead is %i", (unsigned int)newSb.entry); return ERR_FM_ASSIGN_ERR; } if (isDebug(DEBUG_2)){ cout<<"DBG: added fbo "<<newSb.fbo<<" sbid "<<(unsigned int)newSb.sbid<<" entry "<<(unsigned) newSb.entry<<" to "<<segmentType<<" list - need to split "<<(1<<(ENTRY_32-segmentType))<<"times\n"; } newSb.entry = 0; newSb.group = segmentType; newSb.type = EMPTY_PTR; emptyEntry = newSb; int idx, inc; inc = 1<<segmentType; for (idx=0; idx < ENTRY_PER_SUBBLOCK - inc; idx+= inc){ if( isDebug( DEBUG_3 )) { printf ("DBG: split..%i-%i\n", idx, idx+inc-1 );} newSb.entry = idx; releaseSegment( cb, blockZero, freemgr_type, segmentType, &newSb ); } emptyEntry.entry = idx; if( isDebug( DEBUG_3 )) { printf ("DBG: split and return..%i-%i\n", idx, idx+inc-1); } if( isDebug( DEBUG_2 )) { cout<<"DBG: Assigned fbo "<< emptyEntry.fbo<<" sbid "<<(unsigned int)emptyEntry.sbid<<" entry "<<(unsigned int)emptyEntry.entry<<" to chain ENTRY_"<<(1<<segmentType)<<"\n"; } memcpy(assignPtr, &emptyEntry, 8); uint64_t count; getSubBlockEntry( blockZero, 0, calcStatOffset(segmentType) , 8, &count ); count--; setSubBlockEntry( blockZero, 0, calcStatOffset(segmentType) , 8, &count ); return NO_ERROR; } } /** * got here because we didn't need to populate a chain and did not fall into any traps * so either we are at the end of bucket or we have a valid entry **/ if (emptyEntry.type == EMPTY_LIST) // reached end of this segment (should release it for re-use) { /** * release bucket **/ if( isDebug( DEBUG_2 )) { cout<<"DBG: Need to release sb fbo "<<emptyPtr.fbo<<" sbid "<<emptyPtr.sbid<<" from chain ENTRY_"<<(1<<segmentType)<<" in "<<((freemgr_type==LIST)?"LIST":"TREE")<<"\n"; } // when we stored the ptr in the empty map, we tweaked group, must change it back emptyPtr.type = EMPTY_PTR; emptyPtr.group = ENTRY_32; rc = releaseSubblock( cb, blockZero, freemgr_type, &emptyPtr ); if (rc != NO_ERROR) { printf("Error releasing sb\n"); return rc; } emptyPtr = emptyEntry; rc = readDBFile( cb, workBlock.data, emptyPtr.fbo ); if (rc != NO_ERROR){ printf("DBG: Error following chain\n"); return rc; } getSubBlockEntry( &workBlock, emptyPtr.sbid, emptyPtr.entry, 8, &emptyEntry ); } if (emptyEntry.type == EMPTY_PTR) { emptyPtr.entry--; blockZero->dirty = 1; setSubBlockEntry( blockZero, 0, listOffset, 8, &emptyPtr ); if( isDebug( DEBUG_3 )) { printf("DBG: Empty entry is now %u\n",(unsigned int)emptyPtr.entry); } if( isDebug( DEBUG_2 )) { cout<<"DBG: Assigned fbo "<<emptyEntry.fbo<<" sbid "<<emptyEntry.sbid<<" entry "<<emptyEntry.entry<<" from chain ENTRY_"<<(1<<segmentType)<<"\n"; cout<<"DBG: Empty map ENTRY_"<<(1<<segmentType)<<" now fbo "<<emptyPtr.fbo<<" sbid "<<emptyPtr.sbid<<" entry "<<emptyPtr.entry<<"\n"; } memcpy(assignPtr, &emptyEntry, 8); // -- workblock may have changed on disk since it was read.. making the writeDBfile dangerous without a readDBfile first nullPtr(&emptyMap); // zero out the entry readDBFile( cb, &workBlock, emptyPtr.fbo ); setSubBlockEntry( workBlock.data, emptyPtr.sbid, emptyPtr.entry+1, 8, &emptyMap ); rc = writeDBFile( cb, &workBlock, emptyPtr.fbo ); // -- uint64_t count; getSubBlockEntry( blockZero, 0, calcStatOffset(segmentType) , 8, &count ); count--; setSubBlockEntry( blockZero, 0, calcStatOffset(segmentType) , 8, &count ); return NO_ERROR; } return ERR_FM_ASSIGN_ERR; }
int ColumnOpCompress0::readBlock(IDBDataFile* pFile, unsigned char* readBuf, const uint64_t fbo) { return readDBFile(pFile, readBuf, fbo, true); }
/************************************************ * Description: * Find a entry for the given rowId and Key * Then Delete it from the list * Move the rest of the row id up in the same * sub block an decrement the count in that subblock * decrement the header size * Converted * input * pFile -- File Handler * rowId -- row id * key -- value * curIdxRidListHdrPtr - point to the header * * return value * Success -- 0 * Fail -- ERR_IDX_LIST_INVALID_DELETE ************************************************/ const int IndexList::deleteInSub( const RID& rowId) { int rc =ERR_IDX_LIST_INVALID_DELETE; DataBlock prevDataBlock; int pos =0, totalbytes=0; IdxRidListPtr* lastIdxRidListPtr; int type; CommBlock cb; cb.file.oid = m_oid; cb.file.pFile = m_pFile; //get thelbid sbid and entry out from the header last entry //First Sub-block m_lbid=((IdxEmptyListEntry*)&(m_curIdxRidListHdr.nextIdxRidListPtr))->fbo; m_sbid=((IdxEmptyListEntry*)&(m_curIdxRidListHdr.nextIdxRidListPtr))->sbid; m_entry=((IdxEmptyListEntry*)&(m_curIdxRidListHdr.nextIdxRidListPtr))->entry; //Read the pointer entry at LIST_SUB_LLP_POS location IdxRidListEntry rowIdArray[MAX_BLOCK_ENTRY]; IdxRidListEntry newRowIdArray[MAX_BLOCK_ENTRY]; memset(rowIdArray,0,BYTE_PER_BLOCK); memset(newRowIdArray,0,BYTE_PER_BLOCK); //First link pos = LIST_SUB_LLP_POS; totalbytes = SUBBLOCK_TOTAL_BYTES; m_entryGroup = ENTRY_32; if (m_lbid!=m_hdrLbid) { rc = readDBFile(cb, &m_curBlock, m_lbid ); if (rc != NO_ERROR) return rc; rc = readSubBlockEntry(cb, &m_curBlock, m_lbid, m_sbid, 0, totalbytes, rowIdArray); if (rc != NO_ERROR) return rc; m_curBlock.dirty=true; m_curBlock.lbid = m_lbid; m_curBlock.state = BLK_READ; } else { if (m_hdrBlock.state >= BLK_READ) getSubBlockEntry(m_hdrBlock.data, m_sbid, 0, totalbytes, rowIdArray ); else return ERR_IDX_LIST_INVALID_DELETE; } lastIdxRidListPtr=(IdxRidListPtr*)&rowIdArray[pos]; int count; type = lastIdxRidListPtr->type; //next type count = lastIdxRidListPtr->count;//current count for (int i=0; i<count; i++) { if (rowIdArray[i].rid == rowId) {//found m_dLbid = m_lbid; m_dSbid = m_sbid; m_dEntry= i; rc = NO_ERROR; memcpy(&newRowIdArray[0], &rowIdArray[0], totalbytes); lastIdxRidListPtr->count--; if (lastIdxRidListPtr->count==0) { if (type == LIST_SIZE_TYPE) { //header has no link m_curIdxRidListHdr.nextIdxRidListPtr.type =LIST_NOT_USED_TYPE; m_curIdxRidListHdr.nextIdxRidListPtr.llp= 0; } }//header's link block has nothing now else //still have more { memcpy(&rowIdArray[i],&newRowIdArray[i+1],(count-(i+1))*LIST_ENTRY_WIDTH); } //last row id entry now moved up, so not used rowIdArray[count-1].type =LIST_NOT_USED_TYPE; rowIdArray[count-1].rid =0; rowIdArray[count-1].spare =0; //header update the size m_curIdxRidListHdr.idxRidListSize.size--; if (m_lbid!=m_hdrLbid) { setSubBlockEntry( m_curBlock.data, m_sbid,0, totalbytes, rowIdArray ); rc = writeDBFile( cb, m_curBlock.data, m_lbid); if (rc != NO_ERROR) return rc; m_curBlock.state =BLK_READ; rc = writeSubBlockEntry(cb,&m_hdrBlock, m_hdrLbid,m_hdrSbid, m_hdrEntry, LIST_HDR_SIZE, &m_curIdxRidListHdr ); if (rc != NO_ERROR) return rc; m_hdrBlock.state = BLK_READ; } else {//m_lbid==m_hdrLbid setSubBlockEntry( m_hdrBlock.data, m_sbid,0, totalbytes, rowIdArray ); setSubBlockEntry( m_hdrBlock.data, m_hdrSbid,m_hdrEntry, LIST_HDR_SIZE, &m_curIdxRidListHdr); m_hdrBlock.state = BLK_WRITE; rc = writeDBFile( cb, m_hdrBlock.data, m_hdrLbid); if (rc != NO_ERROR) return rc; m_hdrBlock.state = BLK_READ; } //end if m_lbid==m_hdrHdrLbid m_dEntry = i; return rc; }//endif found }//end for return rc; }