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/* * xloginsert.h * * Functions for generating WAL records * * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/access/xloginsert.h */ #ifndef XLOGINSERT_H #define XLOGINSERT_H #include "access/rmgr.h" #include "access/xlogdefs.h" #include "storage/block.h" #include "storage/buf.h" #include "storage/relfilenode.h" #include "utils/relcache.h" /* * The minimum size of the WAL construction working area. If you need to * register more than XLR_NORMAL_MAX_BLOCK_ID block references or have more * than XLR_NORMAL_RDATAS data chunks in a single WAL record, you must call * XLogEnsureRecordSpace() first to allocate more working memory. */ #define XLR_NORMAL_MAX_BLOCK_ID 4 #define XLR_NORMAL_RDATAS 20 /* flags for XLogRegisterBuffer */ #define REGBUF_FORCE_IMAGE 0x01 /* force a full-page image */ #define REGBUF_NO_IMAGE 0x02 /* don't take a full-page image */ #define REGBUF_WILL_INIT (0x04 | 0x02) /* page will be re-initialized * at replay (implies * NO_IMAGE) */ #define REGBUF_STANDARD 0x08/* page follows "standard" page layout, (data * between pd_lower and pd_upper will be * skipped) */ #define REGBUF_KEEP_DATA 0x10/* include data even if a full-page image is * taken */ /* prototypes for public functions in xloginsert.c: */ extern void XLogBeginInsert(void); extern void XLogIncludeOrigin(void); extern XLogRecPtr XLogInsert(RmgrId rmid, uint8 info); extern void XLogEnsureRecordSpace(int nbuffers, int ndatas); extern void XLogRegisterData(char *data, int len); extern void XLogRegisterBuffer(uint8 block_id, Buffer buffer, uint8 flags); extern void XLogRegisterBlock(uint8 block_id, RelFileNode *rnode, ForkNumber forknum, BlockNumber blknum, char *page, uint8 flags); extern void XLogRegisterBufData(uint8 block_id, char *data, int len); extern void XLogResetInsertion(void); extern bool XLogCheckBufferNeedsBackup(Buffer buffer); extern XLogRecPtr log_newpage(RelFileNode *rnode, ForkNumber forkNum, BlockNumber blk, char *page, bool page_std); extern XLogRecPtr log_newpage_buffer(Buffer buffer, bool page_std); extern void log_newpage_range(Relation rel, ForkNumber forkNum, BlockNumber startblk, BlockNumber endblk, bool page_std); extern XLogRecPtr XLogSaveBufferForHint(Buffer buffer, bool buffer_std); extern void InitXLogInsert(void); #endif /* XLOGINSERT_H */