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Diffstat (limited to '')
-rw-r--r-- | src/include/storage/md.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/include/storage/md.h b/src/include/storage/md.h new file mode 100644 index 0000000..07fd1bb --- /dev/null +++ b/src/include/storage/md.h @@ -0,0 +1,52 @@ +/*------------------------------------------------------------------------- + * + * md.h + * magnetic disk storage manager public interface declarations. + * + * + * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/storage/md.h + * + *------------------------------------------------------------------------- + */ +#ifndef MD_H +#define MD_H + +#include "storage/block.h" +#include "storage/relfilenode.h" +#include "storage/smgr.h" +#include "storage/sync.h" + +/* md storage manager functionality */ +extern void mdinit(void); +extern void mdopen(SMgrRelation reln); +extern void mdclose(SMgrRelation reln, ForkNumber forknum); +extern void mdcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo); +extern bool mdexists(SMgrRelation reln, ForkNumber forknum); +extern void mdunlink(RelFileNodeBackend rnode, ForkNumber forknum, bool isRedo); +extern void mdextend(SMgrRelation reln, ForkNumber forknum, + BlockNumber blocknum, char *buffer, bool skipFsync); +extern bool mdprefetch(SMgrRelation reln, ForkNumber forknum, + BlockNumber blocknum); +extern void mdread(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum, + char *buffer); +extern void mdwrite(SMgrRelation reln, ForkNumber forknum, + BlockNumber blocknum, char *buffer, bool skipFsync); +extern void mdwriteback(SMgrRelation reln, ForkNumber forknum, + BlockNumber blocknum, BlockNumber nblocks); +extern BlockNumber mdnblocks(SMgrRelation reln, ForkNumber forknum); +extern void mdtruncate(SMgrRelation reln, ForkNumber forknum, + BlockNumber nblocks); +extern void mdimmedsync(SMgrRelation reln, ForkNumber forknum); + +extern void ForgetDatabaseSyncRequests(Oid dbid); +extern void DropRelationFiles(RelFileNode *delrels, int ndelrels, bool isRedo); + +/* md sync callbacks */ +extern int mdsyncfiletag(const FileTag *ftag, char *path); +extern int mdunlinkfiletag(const FileTag *ftag, char *path); +extern bool mdfiletagmatches(const FileTag *ftag, const FileTag *candidate); + +#endif /* MD_H */ |