static void ginRedoInsertListPage(XLogReaderState *record) { XLogRecPtr lsn = record->EndRecPtr; ginxlogInsertListPage *data = (ginxlogInsertListPage *) XLogRecGetData(record); Buffer buffer; Page page; OffsetNumber l, off = FirstOffsetNumber; int i, tupsize; char *payload; IndexTuple tuples; Size totaltupsize; /* We always re-initialize the page. */ buffer = XLogInitBufferForRedo(record, 0); page = BufferGetPage(buffer); GinInitBuffer(buffer, GIN_LIST); GinPageGetOpaque(page)->rightlink = data->rightlink; if (data->rightlink == InvalidBlockNumber) { /* tail of sublist */ GinPageSetFullRow(page); GinPageGetOpaque(page)->maxoff = 1; } else { GinPageGetOpaque(page)->maxoff = 0; } payload = XLogRecGetBlockData(record, 0, &totaltupsize); tuples = (IndexTuple) payload; for (i = 0; i < data->ntuples; i++) { tupsize = IndexTupleSize(tuples); l = PageAddItem(page, (Item) tuples, tupsize, off, false, false); if (l == InvalidOffsetNumber) elog(ERROR, "failed to add item to index page"); tuples = (IndexTuple) (((char *) tuples) + tupsize); off++; } Assert((char *) tuples == payload + totaltupsize); PageSetLSN(page, lsn); MarkBufferDirty(buffer); UnlockReleaseBuffer(buffer); }
static void ginRedoInsertListPage(XLogRecPtr lsn, XLogRecord *record) { ginxlogInsertListPage *data = (ginxlogInsertListPage *) XLogRecGetData(record); Buffer buffer; Page page; OffsetNumber l, off = FirstOffsetNumber; int i, tupsize; IndexTuple tuples = (IndexTuple) (XLogRecGetData(record) + sizeof(ginxlogInsertListPage)); /* If we have a full-page image, restore it and we're done */ if (record->xl_info & XLR_BKP_BLOCK(0)) { (void) RestoreBackupBlock(lsn, record, 0, false, false); return; } buffer = XLogReadBuffer(data->node, data->blkno, true); Assert(BufferIsValid(buffer)); page = BufferGetPage(buffer); GinInitBuffer(buffer, GIN_LIST); GinPageGetOpaque(page)->rightlink = data->rightlink; if (data->rightlink == InvalidBlockNumber) { /* tail of sublist */ GinPageSetFullRow(page); GinPageGetOpaque(page)->maxoff = 1; } else { GinPageGetOpaque(page)->maxoff = 0; } for (i = 0; i < data->ntuples; i++) { tupsize = IndexTupleSize(tuples); l = PageAddItem(page, (Item) tuples, tupsize, off, false, false); if (l == InvalidOffsetNumber) elog(ERROR, "failed to add item to index page"); tuples = (IndexTuple) (((char *) tuples) + tupsize); } PageSetLSN(page, lsn); MarkBufferDirty(buffer); UnlockReleaseBuffer(buffer); }
static void ginRedoInsertListPage(XLogRecPtr lsn, XLogRecord *record) { ginxlogInsertListPage *data = (ginxlogInsertListPage *) XLogRecGetData(record); Buffer buffer; Page page; OffsetNumber l, off = FirstOffsetNumber; int i, tupsize; IndexTuple tuples = (IndexTuple) (XLogRecGetData(record) + sizeof(ginxlogInsertListPage)); /* * Backup blocks are not used, we always re-initialize the page. */ Assert(!(record->xl_info & XLR_BKP_BLOCK_MASK)); buffer = XLogReadBuffer(data->node, data->blkno, true); Assert(BufferIsValid(buffer)); page = BufferGetPage(buffer); GinInitBuffer(buffer, GIN_LIST); GinPageGetOpaque(page)->rightlink = data->rightlink; if (data->rightlink == InvalidBlockNumber) { /* tail of sublist */ GinPageSetFullRow(page); GinPageGetOpaque(page)->maxoff = 1; } else { GinPageGetOpaque(page)->maxoff = 0; } for (i = 0; i < data->ntuples; i++) { tupsize = IndexTupleSize(tuples); l = PageAddItem(page, (Item) tuples, tupsize, off, false, false); if (l == InvalidOffsetNumber) elog(ERROR, "failed to add item to index page"); tuples = (IndexTuple) (((char *) tuples) + tupsize); off++; } PageSetLSN(page, lsn); MarkBufferDirty(buffer); UnlockReleaseBuffer(buffer); }
/* * Build a pending-list page from the given array of tuples, and write it out. * * Returns amount of free space left on the page. */ static int32 writeListPage(Relation index, Buffer buffer, IndexTuple *tuples, int32 ntuples, BlockNumber rightlink) { Page page = BufferGetPage(buffer); int32 i, freesize, size = 0; OffsetNumber l, off; char *workspace; char *ptr; /* workspace could be a local array; we use palloc for alignment */ workspace = palloc(BLCKSZ); START_CRIT_SECTION(); GinInitBuffer(buffer, GIN_LIST); off = FirstOffsetNumber; ptr = workspace; for (i = 0; i < ntuples; i++) { int this_size = IndexTupleSize(tuples[i]); memcpy(ptr, tuples[i], this_size); ptr += this_size; size += this_size; l = PageAddItem(page, (Item) tuples[i], this_size, off, false, false); if (l == InvalidOffsetNumber) elog(ERROR, "failed to add item to index page in \"%s\"", RelationGetRelationName(index)); off++; } Assert(size <= BLCKSZ); /* else we overran workspace */ GinPageGetOpaque(page)->rightlink = rightlink; /* * tail page may contain only whole row(s) or final part of row placed on * previous pages (a "row" here meaning all the index tuples generated for * one heap tuple) */ if (rightlink == InvalidBlockNumber) { GinPageSetFullRow(page); GinPageGetOpaque(page)->maxoff = 1; } else { GinPageGetOpaque(page)->maxoff = 0; } MarkBufferDirty(buffer); if (RelationNeedsWAL(index)) { XLogRecData rdata[2]; ginxlogInsertListPage data; XLogRecPtr recptr; data.node = index->rd_node; data.blkno = BufferGetBlockNumber(buffer); data.rightlink = rightlink; data.ntuples = ntuples; rdata[0].buffer = InvalidBuffer; rdata[0].data = (char *) &data; rdata[0].len = sizeof(ginxlogInsertListPage); rdata[0].next = rdata + 1; rdata[1].buffer = buffer; rdata[1].buffer_std = true; rdata[1].data = workspace; rdata[1].len = size; rdata[1].next = NULL; recptr = XLogInsert(RM_GIN_ID, XLOG_GIN_INSERT_LISTPAGE, rdata); PageSetLSN(page, recptr); PageSetTLI(page, ThisTimeLineID); } /* get free space before releasing buffer */ freesize = PageGetExactFreeSpace(page); UnlockReleaseBuffer(buffer); END_CRIT_SECTION(); pfree(workspace); return freesize; }