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66 lines
2.8 KiB
C
66 lines
2.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* md.h
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* magnetic disk storage manager public interface declarations.
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*
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*
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* Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/storage/md.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef MD_H
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#define MD_H
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#include "storage/aio_types.h"
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#include "storage/block.h"
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#include "storage/relfilelocator.h"
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#include "storage/smgr.h"
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#include "storage/sync.h"
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extern PGDLLIMPORT const PgAioHandleCallbacks aio_md_readv_cb;
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/* md storage manager functionality */
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extern void mdinit(void);
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extern void mdopen(SMgrRelation reln);
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extern void mdclose(SMgrRelation reln, ForkNumber forknum);
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extern void mdcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo);
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extern bool mdexists(SMgrRelation reln, ForkNumber forknum);
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extern void mdunlink(RelFileLocatorBackend rlocator, ForkNumber forknum, bool isRedo);
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extern void mdextend(SMgrRelation reln, ForkNumber forknum,
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BlockNumber blocknum, const void *buffer, bool skipFsync);
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extern void mdzeroextend(SMgrRelation reln, ForkNumber forknum,
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BlockNumber blocknum, int nblocks, bool skipFsync);
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extern bool mdprefetch(SMgrRelation reln, ForkNumber forknum,
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BlockNumber blocknum, int nblocks);
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extern uint32 mdmaxcombine(SMgrRelation reln, ForkNumber forknum,
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BlockNumber blocknum);
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extern void mdreadv(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
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void **buffers, BlockNumber nblocks);
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extern void mdstartreadv(PgAioHandle *ioh,
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SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
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void **buffers, BlockNumber nblocks);
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extern void mdwritev(SMgrRelation reln, ForkNumber forknum,
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BlockNumber blocknum,
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const void **buffers, BlockNumber nblocks, bool skipFsync);
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extern void mdwriteback(SMgrRelation reln, ForkNumber forknum,
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BlockNumber blocknum, BlockNumber nblocks);
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extern BlockNumber mdnblocks(SMgrRelation reln, ForkNumber forknum);
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extern void mdtruncate(SMgrRelation reln, ForkNumber forknum,
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BlockNumber old_blocks, BlockNumber nblocks);
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extern void mdimmedsync(SMgrRelation reln, ForkNumber forknum);
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extern void mdregistersync(SMgrRelation reln, ForkNumber forknum);
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extern int mdfd(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum, uint32 *off);
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extern void ForgetDatabaseSyncRequests(Oid dbid);
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extern void DropRelationFiles(RelFileLocator *delrels, int ndelrels, bool isRedo);
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/* md sync callbacks */
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extern int mdsyncfiletag(const FileTag *ftag, char *path);
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extern int mdunlinkfiletag(const FileTag *ftag, char *path);
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extern bool mdfiletagmatches(const FileTag *ftag, const FileTag *candidate);
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#endif /* MD_H */
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