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52 lines
2.0 KiB
52 lines
2.0 KiB
/*-------------------------------------------------------------------------
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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) 1996-2020, 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/block.h"
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#include "storage/relfilenode.h"
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#include "storage/smgr.h"
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#include "storage/sync.h"
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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(RelFileNodeBackend rnode, ForkNumber forknum, bool isRedo);
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extern void mdextend(SMgrRelation reln, ForkNumber forknum,
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BlockNumber blocknum, char *buffer, bool skipFsync);
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extern bool mdprefetch(SMgrRelation reln, ForkNumber forknum,
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BlockNumber blocknum);
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extern void mdread(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
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char *buffer);
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extern void mdwrite(SMgrRelation reln, ForkNumber forknum,
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BlockNumber blocknum, char *buffer, 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 nblocks);
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extern void mdimmedsync(SMgrRelation reln, ForkNumber forknum);
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extern void ForgetDatabaseSyncRequests(Oid dbid);
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extern void DropRelationFiles(RelFileNode *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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