Shulou(Shulou.com)06/01 Report--

Heap_insert xl_heap_insert xlrec; xl_heap_header xlhdr; XLogRegisterData ((char *) & xlrec, SizeOfHeapInsert);-> / / xl_heap_insert |-- XLogRecData * rdata; | rdata- > data = data; | rdata- > len = len; | mainrdata_last- > next = rdata; | mainrdata_last = rdata |-- mainrdata_len + = len; / / xl_heap_header+heapup- > t_data XLogRegisterBufData (0, (char *) & xlhdr, SizeOfHeapHeader);-> |-- regbuf = & registered_ buffers [block _ id]; | rdata- > data = data; | rdata- > len = len; | regbuf- > rdata_tail- > next = rdata | | regbuf- > rdata_tail = rdata; |-- regbuf- > rdata_len + = len; XLogRegisterBufData (0, (char *) heaptup- > t_data + SizeofHeapTupleHeader,heaptup- > t_len-SizeofHeapTupleHeader); recptr = XLogInsert (RM_HEAP_ID, info);-> |-- rdt = XLogRecordAssemble (rmid, info, RedoRecPtr, doPageWrites,&fpw_lsn);-- EndPos = XLogInsertRecord (rdt, fpw_lsn, curinsert_flags) | Static XLogRecData hdr_rdt;XLogRecordAssemble: char * scratch = hdr_scratch;//hdr_scratch is the start position of a xlog record rechdr = (XLogRecord *) scratch; scratch + = SizeOfXLogRecord; hdr_rdt.next = NULL; rdt_datas_last = & hdr_rdt;//xlog record chain header hdr_rdt.data = hdr_scratch / / hdr_rdt- > next=xl_heap_header+heapup- > t_data registered_buffer * regbuf = & registered_ buffers [block _ id]; rdt_datas_last- > next= regbuf- > rdata_head; dt_datas_last = regbuf- > rdata_tail; / / xl_heap_header+heapup- > t_data is followed by xl_heap_insert rdt_datas_last- > next= mainrdata_head; rdt_datas_last = mainrdata_last

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