database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-09-02 04:21:28 +03:00
Code Activity

WAL

Browse Source
This commit is contained in:
Vadim B. Mikheev
2000-10-28 16:21:00 +00:00
parent 2f4c9d39fe
commit 5b0740d3fc
25 changed files with 2829 additions and 272 deletions
Download Patch File Download Diff File Expand all files Collapse all files

112
src/backend/storage/smgr/smgr.c
View File

@@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/smgr/smgr.c,v 1.41 2000/10/21 15:43:31 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/smgr/smgr.c,v 1.42 2000/10/28 16:20:57 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -36,27 +36,17 @@ typedef struct f_smgr
char *buffer);
int (*smgr_flush) (Relation reln, BlockNumber blocknum,
char *buffer);
#ifdef OLD_FILE_NAMING
int (*smgr_blindwrt) (char *dbname, char *relname,
Oid dbid, Oid relid,
BlockNumber blkno, char *buffer,
bool dofsync);
#else
int (*smgr_blindwrt) (RelFileNode rnode, BlockNumber blkno,
char *buffer, bool dofsync);
#endif
int (*smgr_markdirty) (Relation reln, BlockNumber blkno);
#ifdef OLD_FILE_NAMING
int (*smgr_blindmarkdirty) (char *dbname, char *relname,
Oid dbid, Oid relid,
BlockNumber blkno);
#else
int (*smgr_blindmarkdirty) (RelFileNode, BlockNumber blkno);
#endif
int (*smgr_nblocks) (Relation reln);
int (*smgr_truncate) (Relation reln, int nblocks);
int (*smgr_commit) (void); /* may be NULL */
int (*smgr_abort) (void); /* may be NULL */
#ifdef XLOG
int (*smgr_sync) (void);
#endif
} f_smgr;
/*
@@ -69,7 +59,11 @@ static f_smgr smgrsw[] = {
/* magnetic disk */
{mdinit, NULL, mdcreate, mdunlink, mdextend, mdopen, mdclose,
mdread, mdwrite, mdflush, mdblindwrt, mdmarkdirty, mdblindmarkdirty,
#ifdef XLOG
mdnblocks, mdtruncate, mdcommit, mdabort, mdsync},
#else
mdnblocks, mdtruncate, mdcommit, mdabort},
#endif
#ifdef STABLE_MEMORY_STORAGE
/* main memory */
@@ -310,40 +304,6 @@ smgrflush(int16 which, Relation reln, BlockNumber blocknum, char *buffer)
* this page down to stable storage in this circumstance. The
* write should be synchronous if dofsync is true.
*/
#ifdef OLD_FILE_NAMING
int
smgrblindwrt(int16 which,
char *dbname,
char *relname,
Oid dbid,
Oid relid,
BlockNumber blkno,
char *buffer,
bool dofsync)
{
char *dbstr;
char *relstr;
int status;
/* strdup here is probably redundant */
dbstr = pstrdup(dbname);
relstr = pstrdup(relname);
status = (*(smgrsw[which].smgr_blindwrt)) (dbstr, relstr, dbid, relid,
blkno, buffer, dofsync);
if (status == SM_FAIL)
elog(ERROR, "cannot write block %d of %s [%s] blind: %m",
blkno, relstr, dbstr);
pfree(dbstr);
pfree(relstr);
return status;
}
#else
int
smgrblindwrt(int16 which,
RelFileNode rnode,
@@ -361,7 +321,6 @@ smgrblindwrt(int16 which,
return status;
}
#endif
/*
* smgrmarkdirty() -- Mark a page dirty (needs fsync).
@@ -394,39 +353,6 @@ smgrmarkdirty(int16 which,
*
* Just like smgrmarkdirty, except we don't have a reldesc.
*/
#ifdef OLD_FILE_NAMING
int
smgrblindmarkdirty(int16 which,
char *dbname,
char *relname,
Oid dbid,
Oid relid,
BlockNumber blkno)
{
char *dbstr;
char *relstr;
int status;
/* strdup here is probably redundant */
dbstr = pstrdup(dbname);
relstr = pstrdup(relname);
status = (*(smgrsw[which].smgr_blindmarkdirty)) (dbstr, relstr,
dbid, relid,
blkno);
if (status == SM_FAIL)
elog(ERROR, "cannot mark block %d of %s [%s] blind: %m",
blkno, relstr, dbstr);
pfree(dbstr);
pfree(relstr);
return status;
}
#else
int
smgrblindmarkdirty(int16 which,
RelFileNode rnode,
@@ -442,7 +368,6 @@ smgrblindmarkdirty(int16 which,
return status;
}
#endif
/*
* smgrnblocks() -- Calculate the number of POSTGRES blocks in the
@@ -528,6 +453,27 @@ smgrabort()
return SM_SUCCESS;
}
#ifdef XLOG
int
smgrsync()
{
int i;
for (i = 0; i < NSmgr; i++)
{
if (smgrsw[i].smgr_sync)
{
if ((*(smgrsw[i].smgr_sync)) () == SM_FAIL)
elog(STOP, "storage sync failed on %s: %m",
DatumGetCString(DirectFunctionCall1(smgrout,
Int16GetDatum(i))));
}
}
return SM_SUCCESS;
}
#endif
#ifdef NOT_USED
bool
smgriswo(int16 smgrno)