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WAL misc

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This commit is contained in:
Vadim B. Mikheev
2000-10-24 09:56:23 +00:00
parent 4b70629b92
commit db2faa943a
7 changed files with 280 additions and 167 deletions
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62
src/backend/access/transam/xlogutils.c
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@ -14,6 +14,7 @@
#include "postgres.h"
#include "access/xlog.h"
#include "access/transam.h"
#include "access/xact.h"
#include "storage/bufpage.h"
#include "storage/bufmgr.h"
@ -134,10 +135,16 @@ XLogIsValidTuple(RelFileNode hnode, ItemPointer iptr)
/* MUST CHECK WASN'T TUPLE INSERTED IN PREV STARTUP */
if (XLogIsAborted(htup->t_xmin))
if (!(htup->t_infomask & HEAP_XMIN_COMMITTED))
{
UnlockAndReleaseBuffer(buffer);
return(false);
if (htup->t_infomask & HEAP_XMIN_INVALID ||
(htup->t_infomask & HEAP_MOVED_IN &&
TransactionIdDidAbort((TransactionId)htup->t_cmin)) ||
TransactionIdDidAbort(htup->t_xmin))
{
UnlockAndReleaseBuffer(buffer);
return(false);
}
}
UnlockAndReleaseBuffer(buffer);
@ -145,40 +152,31 @@ XLogIsValidTuple(RelFileNode hnode, ItemPointer iptr)
}
/*
* ---------------------------------------------------------------
*
* Transaction support functions for recovery
*
* On recovery we create tmp file to know what xactions were
* committed/aborted (2 bits per xaction).
*
*----------------------------------------------------------------
* Open pg_log in recovery
*/
bool
XLogIsAborted(TransactionId xid)
{
return(false);
}
bool
XLogIsCommitted(TransactionId xid)
{
return(true);
}
extern Relation LogRelation; /* pg_log relation */
void
XLogMarkAborted(TransactionId xid)
XLogOpenLogRelation(void)
{
return;
}
Relation logRelation;
void
XLogMarkCommitted(TransactionId xid)
{
return;
}
Assert(!LogRelation);
logRelation = (Relation) malloc(sizeof(RelationData));
memset(logRelation, 0, sizeof(RelationData));
logRelation->rd_rel = (Form_pg_class) malloc(sizeof(FormData_pg_class));
memset(logRelation->rd_rel, 0, sizeof(FormData_pg_class));
sprintf(RelationGetPhysicalRelationName(logRelation), "pg_log");
logRelation->rd_node.tblNode = InvalidOid;
logRelation->rd_node.relNode = RelOid_pg_log;
logRelation->rd_unlinked = false; /* must exists */
logRelation->rd_fd = -1;
logRelation->rd_fd = smgropen(DEFAULT_SMGR, logRelation);
if (logRelation->rd_fd < 0)
elog(STOP, "XLogOpenLogRelation: failed to open pg_log");
LogRelation = logRelation;
}
/*
* ---------------------------------------------------------------
@ -274,7 +272,7 @@ _xl_init_rel_cache(void)
_xlrelarr = (XLogRelDesc*) malloc(sizeof(XLogRelDesc) * _xlcnt);
memset(_xlrelarr, 0, sizeof(XLogRelDesc) * _xlcnt);
_xlpgcarr = (Form_pg_class) malloc(sizeof(FormData_pg_class) * _xlcnt);
memset(_xlpgcarr, 0, sizeof(XLogRelDesc) * _xlcnt);
memset(_xlpgcarr, 0, sizeof(FormData_pg_class) * _xlcnt);
_xlrelarr[0].moreRecently = &(_xlrelarr[0]);
_xlrelarr[0].lessRecently = &(_xlrelarr[0]);