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Postgres FD Implementation
Commit a7084efd authored by Alvaro Herrera's avatar Alvaro Herrera
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Fix confusion between relfilenode and Oid. 

Also, make pg_total_relation_size include the size of the
TOAST index.
parent c775b423
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Showing with 78 additions and 123 deletions
src/backend/utils/adt/dbsize.c
View file @ a7084efd
......@@ -5,7 +5,7 @@
* Copyright (c) 2002-2005, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/dbsize.c,v 1.4 2005/09/16 05:35:40 neilc Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/dbsize.c,v 1.5 2005/09/29 22:04:36 alvherre Exp $
*
*/
......@@ -216,34 +216,33 @@ pg_tablespace_size_name(PG_FUNCTION_ARGS)
* calculate size of a relation
*/
static int64
calculate_relation_size(Oid tblspcOid, Oid relnodeOid)
calculate_relation_size(RelFileNode *rfn)
{
int64 totalsize=0;
unsigned int segcount=0;
char dirpath[MAXPGPATH];
char pathname[MAXPGPATH];
int64 totalsize = 0;
char dirpath[MAXPGPATH];
char pathname[MAXPGPATH];
unsigned int segcount = 0;
if (!tblspcOid)
tblspcOid = MyDatabaseTableSpace;
Assert(OidIsValid(rfn->spcNode));
if (tblspcOid == DEFAULTTABLESPACE_OID)
snprintf(dirpath, MAXPGPATH, "%s/base/%u", DataDir, MyDatabaseId);
else if (tblspcOid == GLOBALTABLESPACE_OID)
if (rfn->spcNode == DEFAULTTABLESPACE_OID)
snprintf(dirpath, MAXPGPATH, "%s/base/%u", DataDir, rfn->dbNode);
else if (rfn->spcNode == GLOBALTABLESPACE_OID)
snprintf(dirpath, MAXPGPATH, "%s/global", DataDir);
else
snprintf(dirpath, MAXPGPATH, "%s/pg_tblspc/%u/%u",
DataDir, tblspcOid, MyDatabaseId);
DataDir, rfn->spcNode, rfn->dbNode);
for (segcount = 0 ;; segcount++)
for (segcount = 0; ; segcount++)
{
struct stat fst;
if (segcount == 0)
snprintf(pathname, MAXPGPATH, "%s/%u",
dirpath, relnodeOid);
dirpath, rfn->relNode);
else
snprintf(pathname, MAXPGPATH, "%s/%u.%u",
dirpath, relnodeOid, segcount);
dirpath, rfn->relNode, segcount);
if (stat(pathname, &fst) < 0)
{
......@@ -264,24 +263,16 @@ Datum
pg_relation_size_oid(PG_FUNCTION_ARGS)
{
Oid relOid=PG_GETARG_OID(0);
HeapTuple tuple;
Form_pg_class pg_class;
Oid relnodeOid;
Oid tblspcOid;
Relation rel;
int64 size;
tuple = SearchSysCache(RELOID,
ObjectIdGetDatum(relOid),
0, 0, 0);
if (!HeapTupleIsValid(tuple))
elog(ERROR, "cache lookup failed for relation %u", relOid);
rel = relation_open(relOid, AccessShareLock);
pg_class = (Form_pg_class) GETSTRUCT(tuple);
relnodeOid = pg_class->relfilenode;
tblspcOid = pg_class->reltablespace;
size = calculate_relation_size(&(rel->rd_node));
ReleaseSysCache(tuple);
relation_close(rel, AccessShareLock);
PG_RETURN_INT64(calculate_relation_size(tblspcOid, relnodeOid));
PG_RETURN_INT64(size);
}
Datum
......@@ -289,77 +280,65 @@ pg_relation_size_name(PG_FUNCTION_ARGS)
{
text *relname = PG_GETARG_TEXT_P(0);
RangeVar *relrv;
Relation relation;
Oid relnodeOid;
Oid tblspcOid;
Relation rel;
int64 size;
relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname));
relation = relation_openrv(relrv, AccessShareLock);
rel = relation_openrv(relrv, AccessShareLock);
tblspcOid = relation->rd_rel->reltablespace;
relnodeOid = relation->rd_rel->relfilenode;
size = calculate_relation_size(&(rel->rd_node));
relation_close(relation, AccessShareLock);
relation_close(rel, AccessShareLock);
PG_RETURN_INT64(calculate_relation_size(tblspcOid, relnodeOid));
PG_RETURN_INT64(size);
}
/*
* Compute the on-disk size of files for 'relation' according to the
* Compute the on-disk size of files for the relation according to the
* stat function, optionally including heap data, index data, and/or
* toast data.
*/
static int64
calculate_total_relation_size(Oid tblspcOid, Oid relnodeOid)
calculate_total_relation_size(Oid Relid)
{
Relation heapRelation;
Relation idxRelation;
Relation toastRelation;
Oid idxOid;
Oid idxTblspcOid;
Oid toastOid;
Oid toastTblspcOid;
bool hasIndices;
int64 size;
List *indexoidlist;
ListCell *idx;
heapRelation = relation_open(relnodeOid, AccessShareLock);
toastOid = heapRelation->rd_rel->reltoastrelid;
hasIndices = heapRelation->rd_rel->relhasindex;
/* Get the heap size */
size = calculate_relation_size(tblspcOid, relnodeOid);
/* Get index size */
if (hasIndices)
Relation heapRel;
Oid toastOid;
int64 size;
ListCell *cell;
heapRel = relation_open(Relid, AccessShareLock);
toastOid = heapRel->rd_rel->reltoastrelid;
/* Get the heap size */
size = calculate_relation_size(&(heapRel->rd_node));
/* Get index size */
if (heapRel->rd_rel->relhasindex)
{
/* recursively include any dependent indexes */
indexoidlist = RelationGetIndexList(heapRelation);
List *index_oids = RelationGetIndexList(heapRel);
foreach(idx, indexoidlist)
foreach(cell, index_oids)
{
idxOid = lfirst_oid(idx);
idxRelation = relation_open(idxOid, AccessShareLock);
idxTblspcOid = idxRelation->rd_rel->reltablespace;
size += calculate_relation_size(idxTblspcOid, idxOid);
relation_close(idxRelation, AccessShareLock);
Oid idxOid = lfirst_oid(cell);
Relation iRel;
iRel = relation_open(idxOid, AccessShareLock);
size += calculate_relation_size(&(iRel->rd_node));
relation_close(iRel, AccessShareLock);
}
list_free(indexoidlist);
list_free(index_oids);
}
relation_close(heapRelation, AccessShareLock);
/* Get toast table (and index) size */
if (OidIsValid(toastOid))
size += calculate_total_relation_size(toastOid);
/* Get toast table size */
if (toastOid != 0)
{
/* recursively include any toast relations */
toastRelation = relation_open(toastOid, AccessShareLock);
toastTblspcOid = toastRelation->rd_rel->reltablespace;
size += calculate_relation_size(toastTblspcOid, toastOid);
relation_close(toastRelation, AccessShareLock);
}
relation_close(heapRel, AccessShareLock);
return size;
}
......@@ -371,45 +350,22 @@ calculate_total_relation_size(Oid tblspcOid, Oid relnodeOid)
Datum
pg_total_relation_size_oid(PG_FUNCTION_ARGS)
{
Oid relOid=PG_GETARG_OID(0);
HeapTuple tuple;
Form_pg_class pg_class;
Oid relnodeOid;
Oid tblspcOid;
tuple = SearchSysCache(RELOID,
ObjectIdGetDatum(relOid),
0, 0, 0);
if (!HeapTupleIsValid(tuple))
elog(ERROR, "cache lookup failed for relation %u", relOid);
pg_class = (Form_pg_class) GETSTRUCT(tuple);
relnodeOid = pg_class->relfilenode;
tblspcOid = pg_class->reltablespace;
ReleaseSysCache(tuple);
Oid relid = PG_GETARG_OID(0);
PG_RETURN_INT64(calculate_total_relation_size(tblspcOid, relnodeOid));
PG_RETURN_INT64(calculate_total_relation_size(relid));
}
Datum
pg_total_relation_size_name(PG_FUNCTION_ARGS)
{
text *relname = PG_GETARG_TEXT_P(0);
RangeVar *relrv;
Relation relation;
Oid relnodeOid;
Oid tblspcOid;
text *relname = PG_GETARG_TEXT_P(0);
RangeVar *relrv;
Oid relid;
relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname));
relation = relation_openrv(relrv, AccessShareLock);
relid = RangeVarGetRelid(relrv, false);
tblspcOid = relation->rd_rel->reltablespace;
relnodeOid = relation->rd_rel->relfilenode;
relation_close(relation, AccessShareLock);
PG_RETURN_INT64(calculate_total_relation_size(tblspcOid, relnodeOid));
PG_RETURN_INT64(calculate_total_relation_size(relid));
}
/*
......@@ -418,37 +374,36 @@ pg_total_relation_size_name(PG_FUNCTION_ARGS)
Datum
pg_size_pretty(PG_FUNCTION_ARGS)
{
int64 size=PG_GETARG_INT64(0);
char *result=palloc(50+VARHDRSZ);
int64 limit = 10*1024;
int64 mult=1;
if (size < limit*mult)
snprintf(VARDATA(result), 50, INT64_FORMAT" bytes",
size);
int64 size = PG_GETARG_INT64(0);
char *result = palloc(50 + VARHDRSZ);
int64 limit = 10 * 1024;
int64 mult = 1;
if (size < limit * mult)
snprintf(VARDATA(result), 50, INT64_FORMAT " bytes", size);
else
{
mult *= 1024;
if (size < limit*mult)
if (size < limit * mult)
snprintf(VARDATA(result), 50, INT64_FORMAT " kB",
(size+mult/2) / mult);
(size + mult / 2) / mult);
else
{
mult *= 1024;
if (size < limit*mult)
if (size < limit * mult)
snprintf(VARDATA(result), 50, INT64_FORMAT " MB",
(size+mult/2) / mult);
(size + mult / 2) / mult);
else
{
mult *= 1024;
if (size < limit*mult)
if (size < limit * mult)
snprintf(VARDATA(result), 50, INT64_FORMAT " GB",
(size+mult/2) / mult);
(size + mult / 2) / mult);
else
{
mult *= 1024;
snprintf(VARDATA(result), 50, INT64_FORMAT " TB",
(size+mult/2) / mult);
(size + mult / 2) / mult);
}
}
}
......
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