-<!-- $PostgreSQL: pgsql/doc/src/sgml/storage.sgml,v 1.32 2010/02/16 22:34:43 tgl Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/storage.sgml,v 1.33 2010/08/13 20:10:50 rhaas Exp $ -->
<chapter id="storage">
</para>
<para>
-Each table and index is stored in a separate file, named after the table
-or index's <firstterm>filenode</> number, which can be found in
-<structname>pg_class</>.<structfield>relfilenode</>. In addition to the
-main file (a/k/a main fork), each table and index has a <firstterm>free space
-map</> (see <xref linkend="storage-fsm">), which stores information about free
-space available in the relation. The free space map is stored in a file named
-with the filenode number plus the suffix <literal>_fsm</>. Tables also have a
-<firstterm>visibility map</>, stored in a fork with the suffix
-<literal>_vm</>, to track which pages are known to have no dead tuples.
-The visibility map is described further in <xref linkend="storage-vm">.
+Each table and index is stored in a separate file. For ordinary relations,
+these files are named after the table or index's <firstterm>filenode</> number,
+which can be found in <structname>pg_class</>.<structfield>relfilenode</>. But
+for temporary relations, the file name is of the form
+<literal>t<replaceable>BBB</>_<replaceable>FFF</></>, where <replaceable>BBB</>
+is the backend ID of the backend which created the file, and <replaceable>FFF</>
+is the filenode number. In either case, in addition to the main file (a/k/a
+main fork), each table and index has a <firstterm>free space map</> (see <xref
+linkend="storage-fsm">), which stores information about free space available in
+the relation. The free space map is stored in a file named with the filenode
+number plus the suffix <literal>_fsm</>. Tables also have a
+<firstterm>visibility map</>, stored in a fork with the suffix <literal>_vm</>,
+to track which pages are known to have no dead tuples. The visibility map is
+described further in <xref linkend="storage-vm">.
</para>
<caution>
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/heap/visibilitymap.c,v 1.10 2010/04/23 23:21:44 rhaas Exp $
+ * $PostgreSQL: pgsql/src/backend/access/heap/visibilitymap.c,v 1.11 2010/08/13 20:10:50 rhaas Exp $
*
* INTERFACE ROUTINES
* visibilitymap_clear - clear a bit in the visibility map
}
/* Truncate the unused VM pages, and send smgr inval message */
- smgrtruncate(rel->rd_smgr, VISIBILITYMAP_FORKNUM, newnblocks,
- rel->rd_istemp);
+ smgrtruncate(rel->rd_smgr, VISIBILITYMAP_FORKNUM, newnblocks);
/*
* We might as well update the local smgr_vm_nblocks setting. smgrtruncate
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/nbtree/nbtsort.c,v 1.125 2010/04/28 16:10:40 heikki Exp $
+ * $PostgreSQL: pgsql/src/backend/access/nbtree/nbtsort.c,v 1.126 2010/08/13 20:10:50 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
}
/*
- * Now write the page. We say isTemp = true even if it's not a temp
- * index, because there's no need for smgr to schedule an fsync for this
- * write; we'll do it ourselves before ending the build.
+ * Now write the page. There's no need for smgr to schedule an fsync for
+ * this write; we'll do it ourselves before ending the build.
*/
if (blkno == wstate->btws_pages_written)
{
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/transam/twophase.c,v 1.62 2010/07/06 19:18:55 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/access/transam/twophase.c,v 1.63 2010/08/13 20:10:50 rhaas Exp $
*
* NOTES
* Each global transaction is associated with a global transaction
hdr.prepared_at = gxact->prepared_at;
hdr.owner = gxact->owner;
hdr.nsubxacts = xactGetCommittedChildren(&children);
- hdr.ncommitrels = smgrGetPendingDeletes(true, &commitrels, NULL);
- hdr.nabortrels = smgrGetPendingDeletes(false, &abortrels, NULL);
+ hdr.ncommitrels = smgrGetPendingDeletes(true, &commitrels);
+ hdr.nabortrels = smgrGetPendingDeletes(false, &abortrels);
hdr.ninvalmsgs = xactGetCommittedInvalidationMessages(&invalmsgs,
&hdr.initfileinval);
StrNCpy(hdr.gid, gxact->gid, GIDSIZE);
}
for (i = 0; i < ndelrels; i++)
{
- SMgrRelation srel = smgropen(delrels[i]);
+ SMgrRelation srel = smgropen(delrels[i], InvalidBackendId);
ForkNumber fork;
for (fork = 0; fork <= MAX_FORKNUM; fork++)
{
if (smgrexists(srel, fork))
- smgrdounlink(srel, fork, false, false);
+ smgrdounlink(srel, fork, false);
}
smgrclose(srel);
}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.297 2010/08/13 15:42:21 rhaas Exp $
+ * $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.298 2010/08/13 20:10:50 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
TransactionId latestXid = InvalidTransactionId;
int nrels;
RelFileNode *rels;
- bool haveNonTemp;
int nchildren;
TransactionId *children;
int nmsgs = 0;
bool RelcacheInitFileInval = false;
/* Get data needed for commit record */
- nrels = smgrGetPendingDeletes(true, &rels, &haveNonTemp);
+ nrels = smgrGetPendingDeletes(true, &rels);
nchildren = xactGetCommittedChildren(&children);
if (XLogStandbyInfoActive())
nmsgs = xactGetCommittedInvalidationMessages(&invalMessages,
* asynchronous commit if all to-be-deleted tables are temporary though,
* since they are lost anyway if we crash.)
*/
- if (XactSyncCommit || forceSyncCommit || haveNonTemp)
+ if (XactSyncCommit || forceSyncCommit || nrels > 0)
{
/*
* Synchronous commit case:
xid);
/* Fetch the data we need for the abort record */
- nrels = smgrGetPendingDeletes(false, &rels, NULL);
+ nrels = smgrGetPendingDeletes(false, &rels);
nchildren = xactGetCommittedChildren(&children);
/* XXX do we really need a critical section here? */
/* Make sure files supposed to be dropped are dropped */
for (i = 0; i < xlrec->nrels; i++)
{
- SMgrRelation srel = smgropen(xlrec->xnodes[i]);
+ SMgrRelation srel = smgropen(xlrec->xnodes[i], InvalidBackendId);
ForkNumber fork;
for (fork = 0; fork <= MAX_FORKNUM; fork++)
if (smgrexists(srel, fork))
{
XLogDropRelation(xlrec->xnodes[i], fork);
- smgrdounlink(srel, fork, false, true);
+ smgrdounlink(srel, fork, true);
}
}
smgrclose(srel);
/* Make sure files supposed to be dropped are dropped */
for (i = 0; i < xlrec->nrels; i++)
{
- SMgrRelation srel = smgropen(xlrec->xnodes[i]);
+ SMgrRelation srel = smgropen(xlrec->xnodes[i], InvalidBackendId);
ForkNumber fork;
for (fork = 0; fork <= MAX_FORKNUM; fork++)
if (smgrexists(srel, fork))
{
XLogDropRelation(xlrec->xnodes[i], fork);
- smgrdounlink(srel, fork, false, true);
+ smgrdounlink(srel, fork, true);
}
}
smgrclose(srel);
appendStringInfo(buf, "; rels:");
for (i = 0; i < xlrec->nrels; i++)
{
- char *path = relpath(xlrec->xnodes[i], MAIN_FORKNUM);
+ char *path = relpathperm(xlrec->xnodes[i], MAIN_FORKNUM);
appendStringInfo(buf, " %s", path);
pfree(path);
appendStringInfo(buf, "; rels:");
for (i = 0; i < xlrec->nrels; i++)
{
- char *path = relpath(xlrec->xnodes[i], MAIN_FORKNUM);
+ char *path = relpathperm(xlrec->xnodes[i], MAIN_FORKNUM);
appendStringInfo(buf, " %s", path);
pfree(path);
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/backend/access/transam/xlogutils.c,v 1.71 2010/07/08 16:08:30 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/access/transam/xlogutils.c,v 1.72 2010/08/13 20:10:50 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
*/
if (log_min_messages <= DEBUG1 || client_min_messages <= DEBUG1)
{
- char *path = relpath(node, forkno);
+ char *path = relpathperm(node, forkno);
if (present)
elog(DEBUG1, "page %u of relation %s is uninitialized",
{
if (log_min_messages <= DEBUG2 || client_min_messages <= DEBUG2)
{
- char *path = relpath(hentry->key.node, forkno);
+ char *path = relpathperm(hentry->key.node, forkno);
elog(DEBUG2, "page %u of relation %s has been dropped",
hentry->key.blkno, path);
{
if (log_min_messages <= DEBUG2 || client_min_messages <= DEBUG2)
{
- char *path = relpath(hentry->key.node, hentry->key.forkno);
+ char *path = relpathperm(hentry->key.node, hentry->key.forkno);
elog(DEBUG2, "page %u of relation %s has been dropped",
hentry->key.blkno, path);
*/
while ((hentry = (xl_invalid_page *) hash_seq_search(&status)) != NULL)
{
- char *path = relpath(hentry->key.node, hentry->key.forkno);
+ char *path = relpathperm(hentry->key.node, hentry->key.forkno);
if (hentry->present)
elog(WARNING, "page %u of relation %s was uninitialized",
Assert(blkno != P_NEW);
/* Open the relation at smgr level */
- smgr = smgropen(rnode);
+ smgr = smgropen(rnode, InvalidBackendId);
/*
* Create the target file if it doesn't already exist. This lets us cope
if (blkno < lastblock)
{
/* page exists in file */
- buffer = ReadBufferWithoutRelcache(rnode, false, forknum, blkno,
+ buffer = ReadBufferWithoutRelcache(rnode, forknum, blkno,
mode, NULL);
}
else
{
if (buffer != InvalidBuffer)
ReleaseBuffer(buffer);
- buffer = ReadBufferWithoutRelcache(rnode, false, forknum,
+ buffer = ReadBufferWithoutRelcache(rnode, forknum,
P_NEW, mode, NULL);
lastblock++;
}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/catalog/catalog.c,v 1.90 2010/04/20 23:48:47 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/catalog/catalog.c,v 1.91 2010/08/13 20:10:50 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
}
/*
- * relpath - construct path to a relation's file
+ * forkname_chars
+ * We use this to figure out whether a filename could be a relation
+ * fork (as opposed to an oddly named stray file that somehow ended
+ * up in the database directory). If the passed string begins with
+ * a fork name (other than the main fork name), we return its length.
+ * If not, we return 0.
+ *
+ * Note that the present coding assumes that there are no fork names which
+ * are prefixes of other fork names.
+ */
+int
+forkname_chars(const char *str)
+{
+ ForkNumber forkNum;
+
+ for (forkNum = 1; forkNum <= MAX_FORKNUM; forkNum++)
+ {
+ int len = strlen(forkNames[forkNum]);
+ if (strncmp(forkNames[forkNum], str, len) == 0)
+ return len;
+ }
+ return 0;
+}
+
+/*
+ * relpathbackend - construct path to a relation's file
*
* Result is a palloc'd string.
*/
char *
-relpath(RelFileNode rnode, ForkNumber forknum)
+relpathbackend(RelFileNode rnode, BackendId backend, ForkNumber forknum)
{
int pathlen;
char *path;
{
/* Shared system relations live in {datadir}/global */
Assert(rnode.dbNode == 0);
+ Assert(backend == InvalidBackendId);
pathlen = 7 + OIDCHARS + 1 + FORKNAMECHARS + 1;
path = (char *) palloc(pathlen);
if (forknum != MAIN_FORKNUM)
else if (rnode.spcNode == DEFAULTTABLESPACE_OID)
{
/* The default tablespace is {datadir}/base */
- pathlen = 5 + OIDCHARS + 1 + OIDCHARS + 1 + FORKNAMECHARS + 1;
- path = (char *) palloc(pathlen);
- if (forknum != MAIN_FORKNUM)
- snprintf(path, pathlen, "base/%u/%u_%s",
- rnode.dbNode, rnode.relNode, forkNames[forknum]);
+ if (backend == InvalidBackendId)
+ {
+ pathlen = 5 + OIDCHARS + 1 + OIDCHARS + 1 + FORKNAMECHARS + 1;
+ path = (char *) palloc(pathlen);
+ if (forknum != MAIN_FORKNUM)
+ snprintf(path, pathlen, "base/%u/%u_%s",
+ rnode.dbNode, rnode.relNode,
+ forkNames[forknum]);
+ else
+ snprintf(path, pathlen, "base/%u/%u",
+ rnode.dbNode, rnode.relNode);
+ }
else
- snprintf(path, pathlen, "base/%u/%u",
- rnode.dbNode, rnode.relNode);
+ {
+ /* OIDCHARS will suffice for an integer, too */
+ pathlen = 5 + OIDCHARS + 2 + OIDCHARS + 1 + OIDCHARS + 1
+ + FORKNAMECHARS + 1;
+ path = (char *) palloc(pathlen);
+ if (forknum != MAIN_FORKNUM)
+ snprintf(path, pathlen, "base/%u/t%d_%u_%s",
+ rnode.dbNode, backend, rnode.relNode,
+ forkNames[forknum]);
+ else
+ snprintf(path, pathlen, "base/%u/t%d_%u",
+ rnode.dbNode, backend, rnode.relNode);
+ }
}
else
{
/* All other tablespaces are accessed via symlinks */
- pathlen = 9 + 1 + OIDCHARS + 1 + strlen(TABLESPACE_VERSION_DIRECTORY) +
- 1 + OIDCHARS + 1 + OIDCHARS + 1 + FORKNAMECHARS + 1;
- path = (char *) palloc(pathlen);
- if (forknum != MAIN_FORKNUM)
- snprintf(path, pathlen, "pg_tblspc/%u/%s/%u/%u_%s",
- rnode.spcNode, TABLESPACE_VERSION_DIRECTORY,
- rnode.dbNode, rnode.relNode, forkNames[forknum]);
+ if (backend == InvalidBackendId)
+ {
+ pathlen = 9 + 1 + OIDCHARS + 1
+ + strlen(TABLESPACE_VERSION_DIRECTORY) + 1 + OIDCHARS + 1
+ + OIDCHARS + 1 + FORKNAMECHARS + 1;
+ path = (char *) palloc(pathlen);
+ if (forknum != MAIN_FORKNUM)
+ snprintf(path, pathlen, "pg_tblspc/%u/%s/%u/%u_%s",
+ rnode.spcNode, TABLESPACE_VERSION_DIRECTORY,
+ rnode.dbNode, rnode.relNode,
+ forkNames[forknum]);
+ else
+ snprintf(path, pathlen, "pg_tblspc/%u/%s/%u/%u",
+ rnode.spcNode, TABLESPACE_VERSION_DIRECTORY,
+ rnode.dbNode, rnode.relNode);
+ }
else
- snprintf(path, pathlen, "pg_tblspc/%u/%s/%u/%u",
- rnode.spcNode, TABLESPACE_VERSION_DIRECTORY,
- rnode.dbNode, rnode.relNode);
+ {
+ /* OIDCHARS will suffice for an integer, too */
+ pathlen = 9 + 1 + OIDCHARS + 1
+ + strlen(TABLESPACE_VERSION_DIRECTORY) + 1 + OIDCHARS + 2
+ + OIDCHARS + 1 + OIDCHARS + 1 + FORKNAMECHARS + 1;
+ path = (char *) palloc(pathlen);
+ if (forknum != MAIN_FORKNUM)
+ snprintf(path, pathlen, "pg_tblspc/%u/%s/%u/t%d_%u_%s",
+ rnode.spcNode, TABLESPACE_VERSION_DIRECTORY,
+ rnode.dbNode, backend, rnode.relNode,
+ forkNames[forknum]);
+ else
+ snprintf(path, pathlen, "pg_tblspc/%u/%s/%u/t%d_%u",
+ rnode.spcNode, TABLESPACE_VERSION_DIRECTORY,
+ rnode.dbNode, backend, rnode.relNode);
+ }
}
return path;
}
* created by bootstrap have preassigned OIDs, so there's no need.
*/
Oid
-GetNewRelFileNode(Oid reltablespace, Relation pg_class)
+GetNewRelFileNode(Oid reltablespace, Relation pg_class, BackendId backend)
{
- RelFileNode rnode;
+ RelFileNodeBackend rnode;
char *rpath;
int fd;
bool collides;
/* This logic should match RelationInitPhysicalAddr */
- rnode.spcNode = reltablespace ? reltablespace : MyDatabaseTableSpace;
- rnode.dbNode = (rnode.spcNode == GLOBALTABLESPACE_OID) ? InvalidOid : MyDatabaseId;
+ rnode.node.spcNode = reltablespace ? reltablespace : MyDatabaseTableSpace;
+ rnode.node.dbNode = (rnode.node.spcNode == GLOBALTABLESPACE_OID) ? InvalidOid : MyDatabaseId;
+
+ /*
+ * The relpath will vary based on the backend ID, so we must initialize
+ * that properly here to make sure that any collisions based on filename
+ * are properly detected.
+ */
+ rnode.backend = backend;
do
{
/* Generate the OID */
if (pg_class)
- rnode.relNode = GetNewOid(pg_class);
+ rnode.node.relNode = GetNewOid(pg_class);
else
- rnode.relNode = GetNewObjectId();
+ rnode.node.relNode = GetNewObjectId();
/* Check for existing file of same name */
rpath = relpath(rnode, MAIN_FORKNUM);
pfree(rpath);
} while (collides);
- return rnode.relNode;
+ return rnode.node.relNode;
}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.374 2010/07/25 23:21:21 rhaas Exp $
+ * $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.375 2010/08/13 20:10:50 rhaas Exp $
*
*
* INTERFACE ROUTINES
#include "catalog/heap.h"
#include "catalog/index.h"
#include "catalog/indexing.h"
+#include "catalog/namespace.h"
#include "catalog/pg_attrdef.h"
#include "catalog/pg_constraint.h"
#include "catalog/pg_inherits.h"
binary_upgrade_next_toast_relfilenode = InvalidOid;
}
else
- relid = GetNewRelFileNode(reltablespace, pg_class_desc);
+ relid = GetNewRelFileNode(reltablespace, pg_class_desc,
+ isTempOrToastNamespace(relnamespace) ?
+ MyBackendId : InvalidBackendId);
}
/*
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/catalog/index.c,v 1.337 2010/02/26 02:00:36 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/catalog/index.c,v 1.338 2010/08/13 20:10:50 rhaas Exp $
*
*
* INTERFACE ROUTINES
binary_upgrade_next_index_relfilenode = InvalidOid;
}
else
- indexRelationId = GetNewRelFileNode(tableSpaceId, pg_class);
+ {
+ indexRelationId =
+ GetNewRelFileNode(tableSpaceId, pg_class,
+ heapRelation->rd_istemp ?
+ MyBackendId : InvalidBackendId);
+ }
}
/*
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/catalog/namespace.c,v 1.128 2010/08/13 16:27:11 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/catalog/namespace.c,v 1.129 2010/08/13 20:10:50 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
* GetTempNamespaceBackendId - if the given namespace is a temporary-table
* namespace (either my own, or another backend's), return the BackendId
* that owns it. Temporary-toast-table namespaces are included, too.
- * If it isn't a temp namespace, return -1.
+ * If it isn't a temp namespace, return InvalidBackendId.
*/
int
GetTempNamespaceBackendId(Oid namespaceId)
/* See if the namespace name starts with "pg_temp_" or "pg_toast_temp_" */
nspname = get_namespace_name(namespaceId);
if (!nspname)
- return -1; /* no such namespace? */
+ return InvalidBackendId; /* no such namespace? */
if (strncmp(nspname, "pg_temp_", 8) == 0)
result = atoi(nspname + 8);
else if (strncmp(nspname, "pg_toast_temp_", 14) == 0)
result = atoi(nspname + 14);
else
- result = -1;
+ result = InvalidBackendId;
pfree(nspname);
return result;
}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/catalog/storage.c,v 1.10 2010/02/09 21:43:30 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/catalog/storage.c,v 1.11 2010/08/13 20:10:50 rhaas Exp $
*
* NOTES
* Some of this code used to be in storage/smgr/smgr.c, and the
typedef struct PendingRelDelete
{
RelFileNode relnode; /* relation that may need to be deleted */
- bool isTemp; /* is it a temporary relation? */
+ BackendId backend; /* InvalidBackendId if not a temp rel */
bool atCommit; /* T=delete at commit; F=delete at abort */
int nestLevel; /* xact nesting level of request */
struct PendingRelDelete *next; /* linked-list link */
XLogRecData rdata;
xl_smgr_create xlrec;
SMgrRelation srel;
+ BackendId backend = istemp ? MyBackendId : InvalidBackendId;
- srel = smgropen(rnode);
+ srel = smgropen(rnode, backend);
smgrcreate(srel, MAIN_FORKNUM, false);
if (!istemp)
pending = (PendingRelDelete *)
MemoryContextAlloc(TopMemoryContext, sizeof(PendingRelDelete));
pending->relnode = rnode;
- pending->isTemp = istemp;
+ pending->backend = backend;
pending->atCommit = false; /* delete if abort */
pending->nestLevel = GetCurrentTransactionNestLevel();
pending->next = pendingDeletes;
pending = (PendingRelDelete *)
MemoryContextAlloc(TopMemoryContext, sizeof(PendingRelDelete));
pending->relnode = rel->rd_node;
- pending->isTemp = rel->rd_istemp;
+ pending->backend = rel->rd_backend;
pending->atCommit = true; /* delete if commit */
pending->nestLevel = GetCurrentTransactionNestLevel();
pending->next = pendingDeletes;
}
/* Do the real work */
- smgrtruncate(rel->rd_smgr, MAIN_FORKNUM, nblocks, rel->rd_istemp);
+ smgrtruncate(rel->rd_smgr, MAIN_FORKNUM, nblocks);
}
/*
*
* This also runs when aborting a subxact; we want to clean up a failed
* subxact immediately.
+ *
+ * Note: It's possible that we're being asked to remove a relation that has
+ * no physical storage in any fork. In particular, it's possible that we're
+ * cleaning up an old temporary relation for which RemovePgTempFiles has
+ * already recovered the physical storage.
*/
void
smgrDoPendingDeletes(bool isCommit)
SMgrRelation srel;
int i;
- srel = smgropen(pending->relnode);
+ srel = smgropen(pending->relnode, pending->backend);
for (i = 0; i <= MAX_FORKNUM; i++)
{
if (smgrexists(srel, i))
- smgrdounlink(srel,
- i,
- pending->isTemp,
- false);
+ smgrdounlink(srel, i, false);
}
smgrclose(srel);
}
}
/*
- * smgrGetPendingDeletes() -- Get a list of relations to be deleted.
+ * smgrGetPendingDeletes() -- Get a list of non-temp relations to be deleted.
*
* The return value is the number of relations scheduled for termination.
* *ptr is set to point to a freshly-palloc'd array of RelFileNodes.
* If there are no relations to be deleted, *ptr is set to NULL.
*
- * If haveNonTemp isn't NULL, the bool it points to gets set to true if
- * there is any non-temp table pending to be deleted; false if not.
+ * Only non-temporary relations are included in the returned list. This is OK
+ * because the list is used only in contexts where temporary relations don't
+ * matter: we're either writing to the two-phase state file (and transactions
+ * that have touched temp tables can't be prepared) or we're writing to xlog
+ * (and all temporary files will be zapped if we restart anyway, so no need
+ * for redo to do it also).
*
* Note that the list does not include anything scheduled for termination
* by upper-level transactions.
*/
int
-smgrGetPendingDeletes(bool forCommit, RelFileNode **ptr, bool *haveNonTemp)
+smgrGetPendingDeletes(bool forCommit, RelFileNode **ptr)
{
int nestLevel = GetCurrentTransactionNestLevel();
int nrels;
PendingRelDelete *pending;
nrels = 0;
- if (haveNonTemp)
- *haveNonTemp = false;
for (pending = pendingDeletes; pending != NULL; pending = pending->next)
{
- if (pending->nestLevel >= nestLevel && pending->atCommit == forCommit)
+ if (pending->nestLevel >= nestLevel && pending->atCommit == forCommit
+ && pending->backend == InvalidBackendId)
nrels++;
}
if (nrels == 0)
*ptr = rptr;
for (pending = pendingDeletes; pending != NULL; pending = pending->next)
{
- if (pending->nestLevel >= nestLevel && pending->atCommit == forCommit)
+ if (pending->nestLevel >= nestLevel && pending->atCommit == forCommit
+ && pending->backend == InvalidBackendId)
{
*rptr = pending->relnode;
rptr++;
}
- if (haveNonTemp && !pending->isTemp)
- *haveNonTemp = true;
}
return nrels;
}
xl_smgr_create *xlrec = (xl_smgr_create *) XLogRecGetData(record);
SMgrRelation reln;
- reln = smgropen(xlrec->rnode);
+ reln = smgropen(xlrec->rnode, InvalidBackendId);
smgrcreate(reln, MAIN_FORKNUM, true);
}
else if (info == XLOG_SMGR_TRUNCATE)
SMgrRelation reln;
Relation rel;
- reln = smgropen(xlrec->rnode);
+ reln = smgropen(xlrec->rnode, InvalidBackendId);
/*
* Forcibly create relation if it doesn't exist (which suggests that
*/
smgrcreate(reln, MAIN_FORKNUM, true);
- smgrtruncate(reln, MAIN_FORKNUM, xlrec->blkno, false);
+ smgrtruncate(reln, MAIN_FORKNUM, xlrec->blkno);
/* Also tell xlogutils.c about it */
XLogTruncateRelation(xlrec->rnode, MAIN_FORKNUM, xlrec->blkno);
if (info == XLOG_SMGR_CREATE)
{
xl_smgr_create *xlrec = (xl_smgr_create *) rec;
- char *path = relpath(xlrec->rnode, MAIN_FORKNUM);
+ char *path = relpathperm(xlrec->rnode, MAIN_FORKNUM);
appendStringInfo(buf, "file create: %s", path);
pfree(path);
else if (info == XLOG_SMGR_TRUNCATE)
{
xl_smgr_truncate *xlrec = (xl_smgr_truncate *) rec;
- char *path = relpath(xlrec->rnode, MAIN_FORKNUM);
+ char *path = relpathperm(xlrec->rnode, MAIN_FORKNUM);
appendStringInfo(buf, "file truncate: %s to %u blocks", path,
xlrec->blkno);
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/catalog/toasting.c,v 1.33 2010/07/25 23:21:21 rhaas Exp $
+ * $PostgreSQL: pgsql/src/backend/catalog/toasting.c,v 1.34 2010/08/13 20:10:50 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
* Toast tables for regular relations go in pg_toast; those for temp
* relations go into the per-backend temp-toast-table namespace.
*/
- if (rel->rd_islocaltemp)
+ if (rel->rd_backend == MyBackendId)
namespaceid = GetTempToastNamespace();
else
namespaceid = PG_TOAST_NAMESPACE;
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/copy.c,v 1.328 2010/07/22 00:47:52 rhaas Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/copy.c,v 1.329 2010/08/13 20:10:50 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
ExecCheckRTPerms(list_make1(rte), true);
/* check read-only transaction */
- if (XactReadOnly && is_from && !cstate->rel->rd_islocaltemp)
+ if (XactReadOnly && is_from && cstate->rel->rd_backend != MyBackendId)
PreventCommandIfReadOnly("COPY FROM");
/* Don't allow COPY w/ OIDs to or from a table without them */
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/sequence.c,v 1.169 2010/07/25 23:21:21 rhaas Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/sequence.c,v 1.170 2010/08/13 20:10:51 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
RelationGetRelationName(seqrel))));
/* read-only transactions may only modify temp sequences */
- if (!seqrel->rd_islocaltemp)
+ if (seqrel->rd_backend != MyBackendId)
PreventCommandIfReadOnly("nextval()");
if (elm->last != elm->cached) /* some numbers were cached */
RelationGetRelationName(seqrel))));
/* read-only transactions may only modify temp sequences */
- if (!seqrel->rd_islocaltemp)
+ if (seqrel->rd_backend != MyBackendId)
PreventCommandIfReadOnly("setval()");
/* lock page' buffer and read tuple */
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.339 2010/08/05 14:45:01 rhaas Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.340 2010/08/13 20:10:51 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
* Relfilenodes are not unique across tablespaces, so we need to allocate
* a new one in the new tablespace.
*/
- newrelfilenode = GetNewRelFileNode(newTableSpace, NULL);
+ newrelfilenode = GetNewRelFileNode(newTableSpace, NULL, rel->rd_backend);
/* Open old and new relation */
newrnode = rel->rd_node;
newrnode.relNode = newrelfilenode;
newrnode.spcNode = newTableSpace;
- dstrel = smgropen(newrnode);
+ dstrel = smgropen(newrnode, rel->rd_backend);
RelationOpenSmgr(rel);
/* XLOG stuff */
if (use_wal)
- log_newpage(&dst->smgr_rnode, forkNum, blkno, page);
+ log_newpage(&dst->smgr_rnode.node, forkNum, blkno, page);
/*
* Now write the page. We say isTemp = true even if it's not a temp
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/postmaster/bgwriter.c,v 1.68 2010/04/28 16:54:15 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/postmaster/bgwriter.c,v 1.69 2010/08/13 20:10:52 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
*/
typedef struct
{
- RelFileNode rnode;
+ RelFileNodeBackend rnode;
ForkNumber forknum;
BlockNumber segno; /* see md.c for special values */
/* might add a real request-type field later; not needed yet */
* than we have to here.
*/
bool
-ForwardFsyncRequest(RelFileNode rnode, ForkNumber forknum, BlockNumber segno)
+ForwardFsyncRequest(RelFileNodeBackend rnode, ForkNumber forknum,
+ BlockNumber segno)
{
BgWriterRequest *request;
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.256 2010/02/26 02:00:59 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.257 2010/08/13 20:10:52 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
static bool StartBufferIO(volatile BufferDesc *buf, bool forInput);
static void TerminateBufferIO(volatile BufferDesc *buf, bool clear_dirty,
int set_flag_bits);
-static void buffer_write_error_callback(void *arg);
+static void shared_buffer_write_error_callback(void *arg);
+static void local_buffer_write_error_callback(void *arg);
static volatile BufferDesc *BufferAlloc(SMgrRelation smgr, ForkNumber forkNum,
BlockNumber blockNum,
BufferAccessStrategy strategy,
int buf_id;
/* create a tag so we can lookup the buffer */
- INIT_BUFFERTAG(newTag, reln->rd_smgr->smgr_rnode, forkNum, blockNum);
+ INIT_BUFFERTAG(newTag, reln->rd_smgr->smgr_rnode.node,
+ forkNum, blockNum);
/* determine its hash code and partition lock ID */
newHash = BufTableHashCode(&newTag);
* ReadBufferWithoutRelcache -- like ReadBufferExtended, but doesn't require
* a relcache entry for the relation.
*
- * NB: caller is assumed to know what it's doing if isTemp is true.
+ * NB: At present, this function may not be used on temporary relations, which
+ * is OK, because we only use it during XLOG replay. If in the future we
+ * want to use it on temporary relations, we could pass the backend ID as an
+ * additional parameter.
*/
Buffer
-ReadBufferWithoutRelcache(RelFileNode rnode, bool isTemp,
- ForkNumber forkNum, BlockNumber blockNum,
- ReadBufferMode mode, BufferAccessStrategy strategy)
+ReadBufferWithoutRelcache(RelFileNode rnode, ForkNumber forkNum,
+ BlockNumber blockNum, ReadBufferMode mode,
+ BufferAccessStrategy strategy)
{
bool hit;
- SMgrRelation smgr = smgropen(rnode);
+ SMgrRelation smgr = smgropen(rnode, InvalidBackendId);
- return ReadBuffer_common(smgr, isTemp, forkNum, blockNum, mode, strategy,
+ return ReadBuffer_common(smgr, false, forkNum, blockNum, mode, strategy,
&hit);
}
{
/* new buffers are zero-filled */
MemSet((char *) bufBlock, 0, BLCKSZ);
- smgrextend(smgr, forkNum, blockNum, (char *) bufBlock, isLocalBuf);
+ smgrextend(smgr, forkNum, blockNum, (char *) bufBlock, false);
}
else
{
VacuumCostBalance += VacuumCostPageMiss;
TRACE_POSTGRESQL_BUFFER_READ_DONE(forkNum, blockNum,
- smgr->smgr_rnode.spcNode,
- smgr->smgr_rnode.dbNode,
- smgr->smgr_rnode.relNode,
- isLocalBuf,
+ smgr->smgr_rnode.node.spcNode,
+ smgr->smgr_rnode.node.dbNode,
+ smgr->smgr_rnode.node.relNode,
+ smgr->smgr_rnode.backend,
isExtend,
found);
bool valid;
/* create a tag so we can lookup the buffer */
- INIT_BUFFERTAG(newTag, smgr->smgr_rnode, forkNum, blockNum);
+ INIT_BUFFERTAG(newTag, smgr->smgr_rnode.node, forkNum, blockNum);
/* determine its hash code and partition lock ID */
newHash = BufTableHashCode(&newTag);
volatile BufferDesc *buf;
int32 loccount;
char *path;
+ BackendId backend;
Assert(BufferIsValid(buffer));
if (BufferIsLocal(buffer))
{
buf = &LocalBufferDescriptors[-buffer - 1];
loccount = LocalRefCount[-buffer - 1];
+ backend = MyBackendId;
}
else
{
buf = &BufferDescriptors[buffer - 1];
loccount = PrivateRefCount[buffer - 1];
+ backend = InvalidBackendId;
}
/* theoretically we should lock the bufhdr here */
- path = relpath(buf->tag.rnode, buf->tag.forkNum);
+ path = relpathbackend(buf->tag.rnode, backend, buf->tag.forkNum);
elog(WARNING,
"buffer refcount leak: [%03d] "
"(rel=%s, blockNum=%u, flags=0x%x, refcount=%u %d)",
return;
/* Setup error traceback support for ereport() */
- errcontext.callback = buffer_write_error_callback;
+ errcontext.callback = shared_buffer_write_error_callback;
errcontext.arg = (void *) buf;
errcontext.previous = error_context_stack;
error_context_stack = &errcontext;
/* Find smgr relation for buffer */
if (reln == NULL)
- reln = smgropen(buf->tag.rnode);
+ reln = smgropen(buf->tag.rnode, InvalidBackendId);
TRACE_POSTGRESQL_BUFFER_FLUSH_START(buf->tag.forkNum,
buf->tag.blockNum,
* --------------------------------------------------------------------
*/
void
-DropRelFileNodeBuffers(RelFileNode rnode, ForkNumber forkNum, bool istemp,
+DropRelFileNodeBuffers(RelFileNodeBackend rnode, ForkNumber forkNum,
BlockNumber firstDelBlock)
{
int i;
- if (istemp)
+ if (rnode.backend != InvalidBackendId)
{
- DropRelFileNodeLocalBuffers(rnode, forkNum, firstDelBlock);
+ if (rnode.backend == MyBackendId)
+ DropRelFileNodeLocalBuffers(rnode.node, forkNum, firstDelBlock);
return;
}
volatile BufferDesc *bufHdr = &BufferDescriptors[i];
LockBufHdr(bufHdr);
- if (RelFileNodeEquals(bufHdr->tag.rnode, rnode) &&
+ if (RelFileNodeEquals(bufHdr->tag.rnode, rnode.node) &&
bufHdr->tag.forkNum == forkNum &&
bufHdr->tag.blockNum >= firstDelBlock)
InvalidateBuffer(bufHdr); /* releases spinlock */
"[%02d] (freeNext=%d, rel=%s, "
"blockNum=%u, flags=0x%x, refcount=%u %d)",
i, buf->freeNext,
- relpath(buf->tag.rnode, buf->tag.forkNum),
+ relpathbackend(buf->tag.rnode, InvalidBackendId, buf->tag.forkNum),
buf->tag.blockNum, buf->flags,
buf->refcount, PrivateRefCount[i]);
}
ErrorContextCallback errcontext;
/* Setup error traceback support for ereport() */
- errcontext.callback = buffer_write_error_callback;
+ errcontext.callback = local_buffer_write_error_callback;
errcontext.arg = (void *) bufHdr;
errcontext.previous = error_context_stack;
error_context_stack = &errcontext;
bufHdr->tag.forkNum,
bufHdr->tag.blockNum,
(char *) LocalBufHdrGetBlock(bufHdr),
- true);
+ false);
bufHdr->flags &= ~(BM_DIRTY | BM_JUST_DIRTIED);
if (sv_flags & BM_IO_ERROR)
{
/* Buffer is pinned, so we can read tag without spinlock */
- char *path = relpath(buf->tag.rnode, buf->tag.forkNum);
+ char *path;
+ path = relpathperm(buf->tag.rnode, buf->tag.forkNum);
ereport(WARNING,
(errcode(ERRCODE_IO_ERROR),
errmsg("could not write block %u of %s",
}
/*
- * Error context callback for errors occurring during buffer writes.
+ * Error context callback for errors occurring during shared buffer writes.
*/
static void
-buffer_write_error_callback(void *arg)
+shared_buffer_write_error_callback(void *arg)
{
volatile BufferDesc *bufHdr = (volatile BufferDesc *) arg;
/* Buffer is pinned, so we can read the tag without locking the spinlock */
if (bufHdr != NULL)
{
- char *path = relpath(bufHdr->tag.rnode, bufHdr->tag.forkNum);
+ char *path = relpathperm(bufHdr->tag.rnode, bufHdr->tag.forkNum);
+
+ errcontext("writing block %u of relation %s",
+ bufHdr->tag.blockNum, path);
+ pfree(path);
+ }
+}
+
+/*
+ * Error context callback for errors occurring during local buffer writes.
+ */
+static void
+local_buffer_write_error_callback(void *arg)
+{
+ volatile BufferDesc *bufHdr = (volatile BufferDesc *) arg;
+
+ if (bufHdr != NULL)
+ {
+ char *path = relpathbackend(bufHdr->tag.rnode, MyBackendId,
+ bufHdr->tag.forkNum);
errcontext("writing block %u of relation %s",
bufHdr->tag.blockNum, path);
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/buffer/localbuf.c,v 1.89 2010/01/02 16:57:51 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/buffer/localbuf.c,v 1.90 2010/08/13 20:10:52 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
BufferTag newTag; /* identity of requested block */
LocalBufferLookupEnt *hresult;
- INIT_BUFFERTAG(newTag, smgr->smgr_rnode, forkNum, blockNum);
+ INIT_BUFFERTAG(newTag, smgr->smgr_rnode.node, forkNum, blockNum);
/* Initialize local buffers if first request in this session */
if (LocalBufHash == NULL)
int trycounter;
bool found;
- INIT_BUFFERTAG(newTag, smgr->smgr_rnode, forkNum, blockNum);
+ INIT_BUFFERTAG(newTag, smgr->smgr_rnode.node, forkNum, blockNum);
/* Initialize local buffers if first request in this session */
if (LocalBufHash == NULL)
Assert(BUFFERTAGS_EQUAL(bufHdr->tag, newTag));
#ifdef LBDEBUG
fprintf(stderr, "LB ALLOC (%u,%d,%d) %d\n",
- smgr->smgr_rnode.relNode, forkNum, blockNum, -b - 1);
+ smgr->smgr_rnode.node.relNode, forkNum, blockNum, -b - 1);
#endif
/* this part is equivalent to PinBuffer for a shared buffer */
if (LocalRefCount[b] == 0)
#ifdef LBDEBUG
fprintf(stderr, "LB ALLOC (%u,%d,%d) %d\n",
- smgr->smgr_rnode.relNode, forkNum, blockNum, -nextFreeLocalBuf - 1);
+ smgr->smgr_rnode.node.relNode, forkNum, blockNum,
+ -nextFreeLocalBuf - 1);
#endif
/*
SMgrRelation oreln;
/* Find smgr relation for buffer */
- oreln = smgropen(bufHdr->tag.rnode);
+ oreln = smgropen(bufHdr->tag.rnode, MyBackendId);
/* And write... */
smgrwrite(oreln,
bufHdr->tag.forkNum,
bufHdr->tag.blockNum,
(char *) LocalBufHdrGetBlock(bufHdr),
- true);
+ false);
/* Mark not-dirty now in case we error out below */
bufHdr->flags &= ~BM_DIRTY;
if (LocalRefCount[i] != 0)
elog(ERROR, "block %u of %s is still referenced (local %u)",
bufHdr->tag.blockNum,
- relpath(bufHdr->tag.rnode, bufHdr->tag.forkNum),
+ relpathbackend(bufHdr->tag.rnode, MyBackendId,
+ bufHdr->tag.forkNum),
LocalRefCount[i]);
/* Remove entry from hashtable */
hresult = (LocalBufferLookupEnt *)
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/file/fd.c,v 1.157 2010/07/06 22:55:26 rhaas Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/file/fd.c,v 1.158 2010/08/13 20:10:52 rhaas Exp $
*
* NOTES:
*
static void AtProcExit_Files(int code, Datum arg);
static void CleanupTempFiles(bool isProcExit);
static void RemovePgTempFilesInDir(const char *tmpdirname);
+static void RemovePgTempRelationFiles(const char *tsdirname);
+static void RemovePgTempRelationFilesInDbspace(const char *dbspacedirname);
+static bool looks_like_temp_rel_name(const char *name);
/*
/*
- * Remove temporary files left over from a prior postmaster session
+ * Remove temporary and temporary relation files left over from a prior
+ * postmaster session
*
* This should be called during postmaster startup. It will forcibly
- * remove any leftover files created by OpenTemporaryFile.
+ * remove any leftover files created by OpenTemporaryFile and any leftover
+ * temporary relation files created by mdcreate.
*
* NOTE: we could, but don't, call this during a post-backend-crash restart
* cycle. The argument for not doing it is that someone might want to examine
*/
snprintf(temp_path, sizeof(temp_path), "base/%s", PG_TEMP_FILES_DIR);
RemovePgTempFilesInDir(temp_path);
+ RemovePgTempRelationFiles("base");
/*
* Cycle through temp directories for all non-default tablespaces.
snprintf(temp_path, sizeof(temp_path), "pg_tblspc/%s/%s/%s",
spc_de->d_name, TABLESPACE_VERSION_DIRECTORY, PG_TEMP_FILES_DIR);
RemovePgTempFilesInDir(temp_path);
+
+ snprintf(temp_path, sizeof(temp_path), "pg_tblspc/%s/%s",
+ spc_de->d_name, TABLESPACE_VERSION_DIRECTORY);
+ RemovePgTempRelationFiles(temp_path);
}
FreeDir(spc_dir);
FreeDir(temp_dir);
}
+
+/* Process one tablespace directory, look for per-DB subdirectories */
+static void
+RemovePgTempRelationFiles(const char *tsdirname)
+{
+ DIR *ts_dir;
+ struct dirent *de;
+ char dbspace_path[MAXPGPATH];
+
+ ts_dir = AllocateDir(tsdirname);
+ if (ts_dir == NULL)
+ {
+ /* anything except ENOENT is fishy */
+ if (errno != ENOENT)
+ elog(LOG,
+ "could not open tablespace directory \"%s\": %m",
+ tsdirname);
+ return;
+ }
+
+ while ((de = ReadDir(ts_dir, tsdirname)) != NULL)
+ {
+ int i = 0;
+
+ /*
+ * We're only interested in the per-database directories, which have
+ * numeric names. Note that this code will also (properly) ignore "."
+ * and "..".
+ */
+ while (isdigit((unsigned char) de->d_name[i]))
+ ++i;
+ if (de->d_name[i] != '\0' || i == 0)
+ continue;
+
+ snprintf(dbspace_path, sizeof(dbspace_path), "%s/%s",
+ tsdirname, de->d_name);
+ RemovePgTempRelationFilesInDbspace(dbspace_path);
+ }
+
+ FreeDir(ts_dir);
+}
+
+/* Process one per-dbspace directory for RemovePgTempRelationFiles */
+static void
+RemovePgTempRelationFilesInDbspace(const char *dbspacedirname)
+{
+ DIR *dbspace_dir;
+ struct dirent *de;
+ char rm_path[MAXPGPATH];
+
+ dbspace_dir = AllocateDir(dbspacedirname);
+ if (dbspace_dir == NULL)
+ {
+ /* we just saw this directory, so it really ought to be there */
+ elog(LOG,
+ "could not open dbspace directory \"%s\": %m",
+ dbspacedirname);
+ return;
+ }
+
+ while ((de = ReadDir(dbspace_dir, dbspacedirname)) != NULL)
+ {
+ if (!looks_like_temp_rel_name(de->d_name))
+ continue;
+
+ snprintf(rm_path, sizeof(rm_path), "%s/%s",
+ dbspacedirname, de->d_name);
+
+ unlink(rm_path); /* note we ignore any error */
+ }
+
+ FreeDir(dbspace_dir);
+}
+
+/* t<digits>_<digits>, or t<digits>_<digits>_<forkname> */
+static bool
+looks_like_temp_rel_name(const char *name)
+{
+ int pos;
+ int savepos;
+
+ /* Must start with "t". */
+ if (name[0] != 't')
+ return false;
+
+ /* Followed by a non-empty string of digits and then an underscore. */
+ for (pos = 1; isdigit((unsigned char) name[pos]); ++pos)
+ ;
+ if (pos == 1 || name[pos] != '_')
+ return false;
+
+ /* Followed by another nonempty string of digits. */
+ for (savepos = ++pos; isdigit((unsigned char) name[pos]); ++pos)
+ ;
+ if (savepos == pos)
+ return false;
+
+ /* We might have _forkname or .segment or both. */
+ if (name[pos] == '_')
+ {
+ int forkchar = forkname_chars(&name[pos+1]);
+ if (forkchar <= 0)
+ return false;
+ pos += forkchar + 1;
+ }
+ if (name[pos] == '.')
+ {
+ int segchar;
+ for (segchar = 1; isdigit((unsigned char) name[pos+segchar]); ++segchar)
+ ;
+ if (segchar <= 1)
+ return false;
+ pos += segchar;
+ }
+
+ /* Now we should be at the end. */
+ if (name[pos] != '\0')
+ return false;
+ return true;
+}
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/freespace/freespace.c,v 1.77 2010/02/26 02:00:59 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/freespace/freespace.c,v 1.78 2010/08/13 20:10:52 rhaas Exp $
*
*
* NOTES:
}
/* Truncate the unused FSM pages, and send smgr inval message */
- smgrtruncate(rel->rd_smgr, FSM_FORKNUM, new_nfsmblocks, rel->rd_istemp);
+ smgrtruncate(rel->rd_smgr, FSM_FORKNUM, new_nfsmblocks);
/*
* We might as well update the local smgr_fsm_nblocks setting.
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/smgr/md.c,v 1.151 2010/02/26 02:01:01 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/smgr/md.c,v 1.152 2010/08/13 20:10:52 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
*/
typedef struct
{
- RelFileNode rnode; /* the targeted relation */
+ RelFileNodeBackend rnode; /* the targeted relation */
ForkNumber forknum;
BlockNumber segno; /* which segment */
} PendingOperationTag;
typedef struct
{
- RelFileNode rnode; /* the dead relation to delete */
+ RelFileNodeBackend rnode; /* the dead relation to delete */
CycleCtr cycle_ctr; /* mdckpt_cycle_ctr when request was made */
} PendingUnlinkEntry;
ExtensionBehavior behavior);
static void register_dirty_segment(SMgrRelation reln, ForkNumber forknum,
MdfdVec *seg);
-static void register_unlink(RelFileNode rnode);
+static void register_unlink(RelFileNodeBackend rnode);
static MdfdVec *_fdvec_alloc(void);
static char *_mdfd_segpath(SMgrRelation reln, ForkNumber forknum,
BlockNumber segno);
static MdfdVec *_mdfd_openseg(SMgrRelation reln, ForkNumber forkno,
BlockNumber segno, int oflags);
static MdfdVec *_mdfd_getseg(SMgrRelation reln, ForkNumber forkno,
- BlockNumber blkno, bool isTemp, ExtensionBehavior behavior);
+ BlockNumber blkno, bool skipFsync, ExtensionBehavior behavior);
static BlockNumber _mdnblocks(SMgrRelation reln, ForkNumber forknum,
MdfdVec *seg);
* we are usually not in a transaction anymore when this is called.
*/
void
-mdunlink(RelFileNode rnode, ForkNumber forkNum, bool isRedo)
+mdunlink(RelFileNodeBackend rnode, ForkNumber forkNum, bool isRedo)
{
char *path;
int ret;
*/
void
mdextend(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
- char *buffer, bool isTemp)
+ char *buffer, bool skipFsync)
{
off_t seekpos;
int nbytes;
relpath(reln->smgr_rnode, forknum),
InvalidBlockNumber)));
- v = _mdfd_getseg(reln, forknum, blocknum, isTemp, EXTENSION_CREATE);
+ v = _mdfd_getseg(reln, forknum, blocknum, skipFsync, EXTENSION_CREATE);
seekpos = (off_t) BLCKSZ *(blocknum % ((BlockNumber) RELSEG_SIZE));
errhint("Check free disk space.")));
}
- if (!isTemp)
+ if (!skipFsync && !SmgrIsTemp(reln))
register_dirty_segment(reln, forknum, v);
Assert(_mdnblocks(reln, forknum, v) <= ((BlockNumber) RELSEG_SIZE));
MdfdVec *v;
TRACE_POSTGRESQL_SMGR_MD_READ_START(forknum, blocknum,
- reln->smgr_rnode.spcNode,
- reln->smgr_rnode.dbNode,
- reln->smgr_rnode.relNode);
+ reln->smgr_rnode.node.spcNode,
+ reln->smgr_rnode.node.dbNode,
+ reln->smgr_rnode.node.relNode,
+ reln->smgr_rnode.backend);
v = _mdfd_getseg(reln, forknum, blocknum, false, EXTENSION_FAIL);
nbytes = FileRead(v->mdfd_vfd, buffer, BLCKSZ);
TRACE_POSTGRESQL_SMGR_MD_READ_DONE(forknum, blocknum,
- reln->smgr_rnode.spcNode,
- reln->smgr_rnode.dbNode,
- reln->smgr_rnode.relNode,
+ reln->smgr_rnode.node.spcNode,
+ reln->smgr_rnode.node.dbNode,
+ reln->smgr_rnode.node.relNode,
+ reln->smgr_rnode.backend,
nbytes,
BLCKSZ);
*/
void
mdwrite(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
- char *buffer, bool isTemp)
+ char *buffer, bool skipFsync)
{
off_t seekpos;
int nbytes;
#endif
TRACE_POSTGRESQL_SMGR_MD_WRITE_START(forknum, blocknum,
- reln->smgr_rnode.spcNode,
- reln->smgr_rnode.dbNode,
- reln->smgr_rnode.relNode);
+ reln->smgr_rnode.node.spcNode,
+ reln->smgr_rnode.node.dbNode,
+ reln->smgr_rnode.node.relNode,
+ reln->smgr_rnode.backend);
- v = _mdfd_getseg(reln, forknum, blocknum, isTemp, EXTENSION_FAIL);
+ v = _mdfd_getseg(reln, forknum, blocknum, skipFsync, EXTENSION_FAIL);
seekpos = (off_t) BLCKSZ *(blocknum % ((BlockNumber) RELSEG_SIZE));
nbytes = FileWrite(v->mdfd_vfd, buffer, BLCKSZ);
TRACE_POSTGRESQL_SMGR_MD_WRITE_DONE(forknum, blocknum,
- reln->smgr_rnode.spcNode,
- reln->smgr_rnode.dbNode,
- reln->smgr_rnode.relNode,
+ reln->smgr_rnode.node.spcNode,
+ reln->smgr_rnode.node.dbNode,
+ reln->smgr_rnode.node.relNode,
+ reln->smgr_rnode.backend,
nbytes,
BLCKSZ);
errhint("Check free disk space.")));
}
- if (!isTemp)
+ if (!skipFsync && !SmgrIsTemp(reln))
register_dirty_segment(reln, forknum, v);
}
* mdtruncate() -- Truncate relation to specified number of blocks.
*/
void
-mdtruncate(SMgrRelation reln, ForkNumber forknum, BlockNumber nblocks,
- bool isTemp)
+mdtruncate(SMgrRelation reln, ForkNumber forknum, BlockNumber nblocks)
{
MdfdVec *v;
BlockNumber curnblk;
errmsg("could not truncate file \"%s\": %m",
FilePathName(v->mdfd_vfd))));
- if (!isTemp)
+ if (!SmgrIsTemp(reln))
register_dirty_segment(reln, forknum, v);
v = v->mdfd_chain;
Assert(ov != reln->md_fd[forknum]); /* we never drop the 1st
errmsg("could not truncate file \"%s\" to %u blocks: %m",
FilePathName(v->mdfd_vfd),
nblocks)));
- if (!isTemp)
+ if (!SmgrIsTemp(reln))
register_dirty_segment(reln, forknum, v);
v = v->mdfd_chain;
ov->mdfd_chain = NULL;
* the relation will have been dirtied through this same smgr
* relation, and so we can save a file open/close cycle.
*/
- reln = smgropen(entry->tag.rnode);
+ reln = smgropen(entry->tag.rnode.node,
+ entry->tag.rnode.backend);
/*
* It is possible that the relation has been dropped or
* a remote pending-ops table.
*/
static void
-register_unlink(RelFileNode rnode)
+register_unlink(RelFileNodeBackend rnode)
{
if (pendingOpsTable)
{
* structure for them.)
*/
void
-RememberFsyncRequest(RelFileNode rnode, ForkNumber forknum, BlockNumber segno)
+RememberFsyncRequest(RelFileNodeBackend rnode, ForkNumber forknum,
+ BlockNumber segno)
{
Assert(pendingOpsTable);
hash_seq_init(&hstat, pendingOpsTable);
while ((entry = (PendingOperationEntry *) hash_seq_search(&hstat)) != NULL)
{
- if (RelFileNodeEquals(entry->tag.rnode, rnode) &&
+ if (RelFileNodeBackendEquals(entry->tag.rnode, rnode) &&
entry->tag.forknum == forknum)
{
/* Okay, cancel this entry */
hash_seq_init(&hstat, pendingOpsTable);
while ((entry = (PendingOperationEntry *) hash_seq_search(&hstat)) != NULL)
{
- if (entry->tag.rnode.dbNode == rnode.dbNode)
+ if (entry->tag.rnode.node.dbNode == rnode.node.dbNode)
{
/* Okay, cancel this entry */
entry->canceled = true;
PendingUnlinkEntry *entry = (PendingUnlinkEntry *) lfirst(cell);
next = lnext(cell);
- if (entry->rnode.dbNode == rnode.dbNode)
+ if (entry->rnode.node.dbNode == rnode.node.dbNode)
{
pendingUnlinks = list_delete_cell(pendingUnlinks, cell, prev);
pfree(entry);
* ForgetRelationFsyncRequests -- forget any fsyncs for a rel
*/
void
-ForgetRelationFsyncRequests(RelFileNode rnode, ForkNumber forknum)
+ForgetRelationFsyncRequests(RelFileNodeBackend rnode, ForkNumber forknum)
{
if (pendingOpsTable)
{
void
ForgetDatabaseFsyncRequests(Oid dbid)
{
- RelFileNode rnode;
+ RelFileNodeBackend rnode;
- rnode.dbNode = dbid;
- rnode.spcNode = 0;
- rnode.relNode = 0;
+ rnode.node.dbNode = dbid;
+ rnode.node.spcNode = 0;
+ rnode.node.relNode = 0;
+ rnode.backend = InvalidBackendId;
if (pendingOpsTable)
{
* specified block.
*
* If the segment doesn't exist, we ereport, return NULL, or create the
- * segment, according to "behavior". Note: isTemp need only be correct
- * in the EXTENSION_CREATE case.
+ * segment, according to "behavior". Note: skipFsync is only used in the
+ * EXTENSION_CREATE case.
*/
static MdfdVec *
_mdfd_getseg(SMgrRelation reln, ForkNumber forknum, BlockNumber blkno,
- bool isTemp, ExtensionBehavior behavior)
+ bool skipFsync, ExtensionBehavior behavior)
{
MdfdVec *v = mdopen(reln, forknum, behavior);
BlockNumber targetseg;
mdextend(reln, forknum,
nextsegno * ((BlockNumber) RELSEG_SIZE) - 1,
- zerobuf, isTemp);
+ zerobuf, skipFsync);
pfree(zerobuf);
}
v->mdfd_chain = _mdfd_openseg(reln, forknum, +nextsegno, O_CREAT);
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/smgr/smgr.c,v 1.121 2010/02/26 02:01:01 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/smgr/smgr.c,v 1.122 2010/08/13 20:10:52 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
void (*smgr_create) (SMgrRelation reln, ForkNumber forknum,
bool isRedo);
bool (*smgr_exists) (SMgrRelation reln, ForkNumber forknum);
- void (*smgr_unlink) (RelFileNode rnode, ForkNumber forknum,
+ void (*smgr_unlink) (RelFileNodeBackend rnode, ForkNumber forknum,
bool isRedo);
void (*smgr_extend) (SMgrRelation reln, ForkNumber forknum,
- BlockNumber blocknum, char *buffer, bool isTemp);
+ BlockNumber blocknum, char *buffer, bool skipFsync);
void (*smgr_prefetch) (SMgrRelation reln, ForkNumber forknum,
BlockNumber blocknum);
void (*smgr_read) (SMgrRelation reln, ForkNumber forknum,
BlockNumber blocknum, char *buffer);
void (*smgr_write) (SMgrRelation reln, ForkNumber forknum,
- BlockNumber blocknum, char *buffer, bool isTemp);
+ BlockNumber blocknum, char *buffer, bool skipFsync);
BlockNumber (*smgr_nblocks) (SMgrRelation reln, ForkNumber forknum);
void (*smgr_truncate) (SMgrRelation reln, ForkNumber forknum,
- BlockNumber nblocks, bool isTemp);
+ BlockNumber nblocks);
void (*smgr_immedsync) (SMgrRelation reln, ForkNumber forknum);
void (*smgr_pre_ckpt) (void); /* may be NULL */
void (*smgr_sync) (void); /* may be NULL */
/* local function prototypes */
static void smgrshutdown(int code, Datum arg);
-static void smgr_internal_unlink(RelFileNode rnode, ForkNumber forknum,
- int which, bool isTemp, bool isRedo);
/*
* This does not attempt to actually open the object.
*/
SMgrRelation
-smgropen(RelFileNode rnode)
+smgropen(RelFileNode rnode, BackendId backend)
{
+ RelFileNodeBackend brnode;
SMgrRelation reln;
bool found;
HASHCTL ctl;
MemSet(&ctl, 0, sizeof(ctl));
- ctl.keysize = sizeof(RelFileNode);
+ ctl.keysize = sizeof(RelFileNodeBackend);
ctl.entrysize = sizeof(SMgrRelationData);
ctl.hash = tag_hash;
SMgrRelationHash = hash_create("smgr relation table", 400,
}
/* Look up or create an entry */
+ brnode.node = rnode;
+ brnode.backend = backend;
reln = (SMgrRelation) hash_search(SMgrRelationHash,
- (void *) &rnode,
+ (void *) &brnode,
HASH_ENTER, &found);
/* Initialize it if not present before */
* such entry exists already.
*/
void
-smgrclosenode(RelFileNode rnode)
+smgrclosenode(RelFileNodeBackend rnode)
{
SMgrRelation reln;
* should be here and not in commands/tablespace.c? But that would imply
* importing a lot of stuff that smgr.c oughtn't know, either.
*/
- TablespaceCreateDbspace(reln->smgr_rnode.spcNode,
- reln->smgr_rnode.dbNode,
+ TablespaceCreateDbspace(reln->smgr_rnode.node.spcNode,
+ reln->smgr_rnode.node.dbNode,
isRedo);
(*(smgrsw[reln->smgr_which].smgr_create)) (reln, forknum, isRedo);
* already.
*/
void
-smgrdounlink(SMgrRelation reln, ForkNumber forknum, bool isTemp, bool isRedo)
+smgrdounlink(SMgrRelation reln, ForkNumber forknum, bool isRedo)
{
- RelFileNode rnode = reln->smgr_rnode;
+ RelFileNodeBackend rnode = reln->smgr_rnode;
int which = reln->smgr_which;
/* Close the fork */
(*(smgrsw[which].smgr_close)) (reln, forknum);
- smgr_internal_unlink(rnode, forknum, which, isTemp, isRedo);
-}
-
-/*
- * Shared subroutine that actually does the unlink ...
- */
-static void
-smgr_internal_unlink(RelFileNode rnode, ForkNumber forknum,
- int which, bool isTemp, bool isRedo)
-{
/*
* Get rid of any remaining buffers for the relation. bufmgr will just
* drop them without bothering to write the contents.
*/
- DropRelFileNodeBuffers(rnode, forknum, isTemp, 0);
+ DropRelFileNodeBuffers(rnode, forknum, 0);
/*
* It'd be nice to tell the stats collector to forget it immediately, too.
*/
void
smgrextend(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
- char *buffer, bool isTemp)
+ char *buffer, bool skipFsync)
{
(*(smgrsw[reln->smgr_which].smgr_extend)) (reln, forknum, blocknum,
- buffer, isTemp);
+ buffer, skipFsync);
}
/*
* on disk at return, only dumped out to the kernel. However,
* provisions will be made to fsync the write before the next checkpoint.
*
- * isTemp indicates that the relation is a temp table (ie, is managed
- * by the local-buffer manager). In this case no provisions need be
- * made to fsync the write before checkpointing.
+ * skipFsync indicates that the caller will make other provisions to
+ * fsync the relation, so we needn't bother. Temporary relations also
+ * do not require fsync.
*/
void
smgrwrite(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
- char *buffer, bool isTemp)
+ char *buffer, bool skipFsync)
{
(*(smgrsw[reln->smgr_which].smgr_write)) (reln, forknum, blocknum,
- buffer, isTemp);
+ buffer, skipFsync);
}
/*
* The truncation is done immediately, so this can't be rolled back.
*/
void
-smgrtruncate(SMgrRelation reln, ForkNumber forknum, BlockNumber nblocks,
- bool isTemp)
+smgrtruncate(SMgrRelation reln, ForkNumber forknum, BlockNumber nblocks)
{
/*
* Get rid of any buffers for the about-to-be-deleted blocks. bufmgr will
* just drop them without bothering to write the contents.
*/
- DropRelFileNodeBuffers(reln->smgr_rnode, forknum, isTemp, nblocks);
+ DropRelFileNodeBuffers(reln->smgr_rnode, forknum, nblocks);
/*
* Send a shared-inval message to force other backends to close any smgr
/*
* Do the truncation.
*/
- (*(smgrsw[reln->smgr_which].smgr_truncate)) (reln, forknum, nblocks,
- isTemp);
+ (*(smgrsw[reln->smgr_which].smgr_truncate)) (reln, forknum, nblocks);
}
/*
* to use the WAL log for PITR or replication purposes: in that case
* we have to make WAL entries as well.)
*
- * The preceding writes should specify isTemp = true to avoid
+ * The preceding writes should specify skipFsync = true to avoid
* duplicative fsyncs.
*
* Note that you need to do FlushRelationBuffers() first if there is
* Copyright (c) 2002-2010, PostgreSQL Global Development Group
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/adt/dbsize.c,v 1.32 2010/08/05 14:45:04 rhaas Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/dbsize.c,v 1.33 2010/08/13 20:10:52 rhaas Exp $
*
*/
* calculate size of (one fork of) a relation
*/
static int64
-calculate_relation_size(RelFileNode *rfn, ForkNumber forknum)
+calculate_relation_size(RelFileNode *rfn, BackendId backend, ForkNumber forknum)
{
int64 totalsize = 0;
char *relationpath;
char pathname[MAXPGPATH];
unsigned int segcount = 0;
- relationpath = relpath(*rfn, forknum);
+ relationpath = relpathbackend(*rfn, backend, forknum);
for (segcount = 0;; segcount++)
{
rel = relation_open(relOid, AccessShareLock);
- size = calculate_relation_size(&(rel->rd_node),
+ size = calculate_relation_size(&(rel->rd_node), rel->rd_backend,
forkname_to_number(text_to_cstring(forkName)));
relation_close(rel, AccessShareLock);
/* toast heap size, including FSM and VM size */
for (forkNum = 0; forkNum <= MAX_FORKNUM; forkNum++)
- size += calculate_relation_size(&(toastRel->rd_node), forkNum);
+ size += calculate_relation_size(&(toastRel->rd_node),
+ toastRel->rd_backend, forkNum);
/* toast index size, including FSM and VM size */
toastIdxRel = relation_open(toastRel->rd_rel->reltoastidxid, AccessShareLock);
for (forkNum = 0; forkNum <= MAX_FORKNUM; forkNum++)
- size += calculate_relation_size(&(toastIdxRel->rd_node), forkNum);
+ size += calculate_relation_size(&(toastIdxRel->rd_node),
+ toastIdxRel->rd_backend, forkNum);
relation_close(toastIdxRel, AccessShareLock);
relation_close(toastRel, AccessShareLock);
* heap size, including FSM and VM
*/
for (forkNum = 0; forkNum <= MAX_FORKNUM; forkNum++)
- size += calculate_relation_size(&(rel->rd_node), forkNum);
+ size += calculate_relation_size(&(rel->rd_node), rel->rd_backend,
+ forkNum);
/*
* Size of toast relation
idxRel = relation_open(idxOid, AccessShareLock);
for (forkNum = 0; forkNum <= MAX_FORKNUM; forkNum++)
- size += calculate_relation_size(&(idxRel->rd_node), forkNum);
+ size += calculate_relation_size(&(idxRel->rd_node),
+ idxRel->rd_backend,
+ forkNum);
relation_close(idxRel, AccessShareLock);
}
HeapTuple tuple;
Form_pg_class relform;
RelFileNode rnode;
+ BackendId backend;
char *path;
tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(relid));
break;
}
- ReleaseSysCache(tuple);
-
if (!OidIsValid(rnode.relNode))
+ {
+ ReleaseSysCache(tuple);
PG_RETURN_NULL();
+ }
+
+ /* If temporary, determine owning backend. */
+ if (!relform->relistemp)
+ backend = InvalidBackendId;
+ else if (isTempOrToastNamespace(relform->relnamespace))
+ backend = MyBackendId;
+ else
+ {
+ /* Do it the hard way. */
+ backend = GetTempNamespaceBackendId(relform->relnamespace);
+ Assert(backend != InvalidBackendId);
+ }
+
+ ReleaseSysCache(tuple);
- path = relpath(rnode, MAIN_FORKNUM);
+ path = relpathbackend(rnode, backend, MAIN_FORKNUM);
PG_RETURN_TEXT_P(cstring_to_text(path));
}
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/cache/inval.c,v 1.98 2010/02/26 02:01:11 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/cache/inval.c,v 1.99 2010/08/13 20:10:52 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
{
SharedInvalidationMessage msg;
- msg.cc.id = (int16) id;
+ Assert(id < CHAR_MAX);
+ msg.cc.id = (int8) id;
msg.cc.tuplePtr = *tuplePtr;
msg.cc.dbId = dbId;
msg.cc.hashValue = hashValue;
* We could have smgr entries for relations of other databases, so no
* short-circuit test is possible here.
*/
- smgrclosenode(msg->sm.rnode);
+ RelFileNodeBackend rnode;
+ rnode.node = msg->sm.rnode;
+ rnode.backend = (msg->sm.backend_hi << 16) | (int) msg->sm.backend_lo;
+ smgrclosenode(rnode);
}
else if (msg->id == SHAREDINVALRELMAP_ID)
{
* in commit/abort WAL entries. Instead, calls to CacheInvalidateSmgr()
* should happen in low-level smgr.c routines, which are executed while
* replaying WAL as well as when creating it.
+ *
+ * Note: In order to avoid bloating SharedInvalidationMessage, we store only
+ * three bytes of the backend ID using what would otherwise be padding space.
+ * Thus, the maximum possible backend ID is 2^23-1.
*/
void
-CacheInvalidateSmgr(RelFileNode rnode)
+CacheInvalidateSmgr(RelFileNodeBackend rnode)
{
SharedInvalidationMessage msg;
msg.sm.id = SHAREDINVALSMGR_ID;
- msg.sm.rnode = rnode;
+ msg.sm.backend_hi = rnode.backend >> 16;
+ msg.sm.backend_lo = rnode.backend & 0xffff;
+ msg.sm.rnode = rnode.node;
SendSharedInvalidMessages(&msg, 1);
}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.311 2010/07/06 19:18:58 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.312 2010/08/13 20:10:52 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
relation->rd_createSubid = InvalidSubTransactionId;
relation->rd_newRelfilenodeSubid = InvalidSubTransactionId;
relation->rd_istemp = relation->rd_rel->relistemp;
- if (relation->rd_istemp)
- relation->rd_islocaltemp = isTempOrToastNamespace(relation->rd_rel->relnamespace);
+ if (!relation->rd_istemp)
+ relation->rd_backend = InvalidBackendId;
+ else if (isTempOrToastNamespace(relation->rd_rel->relnamespace))
+ relation->rd_backend = MyBackendId;
else
- relation->rd_islocaltemp = false;
+ {
+ /*
+ * If it's a temporary table, but not one of ours, we have to use
+ * the slow, grotty method to figure out the owning backend.
+ */
+ relation->rd_backend =
+ GetTempNamespaceBackendId(relation->rd_rel->relnamespace);
+ Assert(relation->rd_backend != InvalidBackendId);
+ }
/*
* initialize the tuple descriptor (relation->rd_att).
relation->rd_createSubid = InvalidSubTransactionId;
relation->rd_newRelfilenodeSubid = InvalidSubTransactionId;
relation->rd_istemp = false;
- relation->rd_islocaltemp = false;
+ relation->rd_backend = InvalidBackendId;
/*
* initialize relation tuple form
/* it is temporary if and only if it is in my temp-table namespace */
rel->rd_istemp = isTempOrToastNamespace(relnamespace);
- rel->rd_islocaltemp = rel->rd_istemp;
+ rel->rd_backend = rel->rd_istemp ? MyBackendId : InvalidBackendId;
/*
* create a new tuple descriptor from the one passed in. We do this
RelationSetNewRelfilenode(Relation relation, TransactionId freezeXid)
{
Oid newrelfilenode;
- RelFileNode newrnode;
+ RelFileNodeBackend newrnode;
Relation pg_class;
HeapTuple tuple;
Form_pg_class classform;
TransactionIdIsNormal(freezeXid));
/* Allocate a new relfilenode */
- newrelfilenode = GetNewRelFileNode(relation->rd_rel->reltablespace, NULL);
+ newrelfilenode = GetNewRelFileNode(relation->rd_rel->reltablespace, NULL,
+ relation->rd_backend);
/*
* Get a writable copy of the pg_class tuple for the given relation.
* NOTE: any conflict in relfilenode value will be caught here, if
* GetNewRelFileNode messes up for any reason.
*/
- newrnode = relation->rd_node;
- newrnode.relNode = newrelfilenode;
- RelationCreateStorage(newrnode, relation->rd_istemp);
+ newrnode.node = relation->rd_node;
+ newrnode.node.relNode = newrelfilenode;
+ newrnode.backend = relation->rd_backend;
+ RelationCreateStorage(newrnode.node, relation->rd_istemp);
smgrclosenode(newrnode);
/*
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.566 2010/08/06 14:51:33 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.567 2010/08/13 20:10:53 rhaas Exp $
*
*--------------------------------------------------------------------
*/
#define MAX_KILOBYTES (INT_MAX / 1024)
#endif
+/*
+ * Note: MAX_BACKENDS is limited to 2^23-1 because inval.c stores the
+ * backend ID as a 3-byte signed integer. Even if that limitation were
+ * removed, we still could not exceed INT_MAX/4 because some places compute
+ * 4*MaxBackends without any overflow check. This is rechecked in
+ * assign_maxconnections, since MaxBackends is computed as MaxConnections
+ * plus autovacuum_max_workers plus one (for the autovacuum launcher).
+ */
+#define MAX_BACKENDS 0x7fffff
+
#define KB_PER_MB (1024)
#define KB_PER_GB (1024*1024)
30 * 1000, -1, INT_MAX / 1000, NULL, NULL
},
- /*
- * Note: MaxBackends is limited to INT_MAX/4 because some places compute
- * 4*MaxBackends without any overflow check. This check is made in
- * assign_maxconnections, since MaxBackends is computed as MaxConnections
- * plus autovacuum_max_workers plus one (for the autovacuum launcher).
- *
- * Likewise we have to limit NBuffers to INT_MAX/2.
- *
- * See also CheckRequiredParameterValues() if this parameter changes
- */
{
{"max_connections", PGC_POSTMASTER, CONN_AUTH_SETTINGS,
gettext_noop("Sets the maximum number of concurrent connections."),
NULL
},
&MaxConnections,
- 100, 1, INT_MAX / 4, assign_maxconnections, NULL
+ 100, 1, MAX_BACKENDS, assign_maxconnections, NULL
},
{
NULL
},
&ReservedBackends,
- 3, 0, INT_MAX / 4, NULL, NULL
+ 3, 0, MAX_BACKENDS, NULL, NULL
},
+ /*
+ * We sometimes multiply the number of shared buffers by two without
+ * checking for overflow, so we mustn't allow more than INT_MAX / 2.
+ */
{
{"shared_buffers", PGC_POSTMASTER, RESOURCES_MEM,
gettext_noop("Sets the number of shared memory buffers used by the server."),
NULL
},
&max_prepared_xacts,
- 0, 0, INT_MAX / 4, NULL, NULL
+ 0, 0, MAX_BACKENDS, NULL, NULL
},
#ifdef LOCK_DEBUG
NULL
},
&max_wal_senders,
- 0, 0, INT_MAX / 4, NULL, NULL
+ 0, 0, MAX_BACKENDS, NULL, NULL
},
{
NULL
},
&autovacuum_max_workers,
- 3, 1, INT_MAX / 4, assign_autovacuum_max_workers, NULL
+ 3, 1, MAX_BACKENDS, assign_autovacuum_max_workers, NULL
},
{
static bool
assign_maxconnections(int newval, bool doit, GucSource source)
{
- if (newval + autovacuum_max_workers + 1 > INT_MAX / 4)
+ if (newval + autovacuum_max_workers + 1 > MAX_BACKENDS)
return false;
if (doit)
static bool
assign_autovacuum_max_workers(int newval, bool doit, GucSource source)
{
- if (MaxConnections + newval + 1 > INT_MAX / 4)
+ if (MaxConnections + newval + 1 > MAX_BACKENDS)
return false;
if (doit)
*
* Copyright (c) 2006-2010, PostgreSQL Global Development Group
*
- * $PostgreSQL: pgsql/src/backend/utils/probes.d,v 1.12 2010/01/02 16:57:53 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/probes.d,v 1.13 2010/08/13 20:10:52 rhaas Exp $
* ----------
*/
probe sort__done(bool, long);
probe buffer__read__start(ForkNumber, BlockNumber, Oid, Oid, Oid, bool, bool);
- probe buffer__read__done(ForkNumber, BlockNumber, Oid, Oid, Oid, bool, bool, bool);
+ probe buffer__read__done(ForkNumber, BlockNumber, Oid, Oid, Oid, int, bool, bool);
probe buffer__flush__start(ForkNumber, BlockNumber, Oid, Oid, Oid);
probe buffer__flush__done(ForkNumber, BlockNumber, Oid, Oid, Oid);
probe twophase__checkpoint__start();
probe twophase__checkpoint__done();
- probe smgr__md__read__start(ForkNumber, BlockNumber, Oid, Oid, Oid);
- probe smgr__md__read__done(ForkNumber, BlockNumber, Oid, Oid, Oid, int, int);
- probe smgr__md__write__start(ForkNumber, BlockNumber, Oid, Oid, Oid);
- probe smgr__md__write__done(ForkNumber, BlockNumber, Oid, Oid, Oid, int, int);
+ probe smgr__md__read__start(ForkNumber, BlockNumber, Oid, Oid, Oid, int);
+ probe smgr__md__read__done(ForkNumber, BlockNumber, Oid, Oid, Oid, int, int, int);
+ probe smgr__md__write__start(ForkNumber, BlockNumber, Oid, Oid, Oid, int);
+ probe smgr__md__write__done(ForkNumber, BlockNumber, Oid, Oid, Oid, int, int, int);
probe xlog__insert(unsigned char, unsigned char);
probe xlog__switch();
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/access/xlog_internal.h,v 1.33 2010/04/28 16:10:43 heikki Exp $
+ * $PostgreSQL: pgsql/src/include/access/xlog_internal.h,v 1.34 2010/08/13 20:10:53 rhaas Exp $
*/
#ifndef XLOG_INTERNAL_H
#define XLOG_INTERNAL_H
/*
* Each page of XLOG file has a header like this:
*/
-#define XLOG_PAGE_MAGIC 0xD064 /* can be used as WAL version indicator */
+#define XLOG_PAGE_MAGIC 0xD065 /* can be used as WAL version indicator */
typedef struct XLogPageHeaderData
{
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/catalog.h,v 1.49 2010/02/26 02:01:21 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/catalog.h,v 1.50 2010/08/13 20:10:53 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
extern const char *forkNames[];
extern ForkNumber forkname_to_number(char *forkName);
+extern int forkname_chars(const char *str);
-extern char *relpath(RelFileNode rnode, ForkNumber forknum);
+extern char *relpathbackend(RelFileNode rnode, BackendId backend,
+ ForkNumber forknum);
extern char *GetDatabasePath(Oid dbNode, Oid spcNode);
+/* First argument is a RelFileNodeBackend */
+#define relpath(rnode, forknum) \
+ relpathbackend((rnode).node, (rnode).backend, (forknum))
+
+/* First argument is a RelFileNode */
+#define relpathperm(rnode, forknum) \
+ relpathbackend((rnode), InvalidBackendId, (forknum))
+
extern bool IsSystemRelation(Relation relation);
extern bool IsToastRelation(Relation relation);
extern Oid GetNewOid(Relation relation);
extern Oid GetNewOidWithIndex(Relation relation, Oid indexId,
AttrNumber oidcolumn);
-extern Oid GetNewRelFileNode(Oid reltablespace, Relation pg_class);
+extern Oid GetNewRelFileNode(Oid reltablespace, Relation pg_class,
+ BackendId backend);
#endif /* CATALOG_H */
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/storage.h,v 1.5 2010/02/07 20:48:13 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/storage.h,v 1.6 2010/08/13 20:10:53 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
* naming
*/
extern void smgrDoPendingDeletes(bool isCommit);
-extern int smgrGetPendingDeletes(bool forCommit, RelFileNode **ptr,
- bool *haveNonTemp);
+extern int smgrGetPendingDeletes(bool forCommit, RelFileNode **ptr);
extern void AtSubCommit_smgr(void);
extern void AtSubAbort_smgr(void);
extern void PostPrepare_smgr(void);
*
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
*
- * $PostgreSQL: pgsql/src/include/postmaster/bgwriter.h,v 1.15 2010/01/02 16:58:08 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/postmaster/bgwriter.h,v 1.16 2010/08/13 20:10:53 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
extern void RequestCheckpoint(int flags);
extern void CheckpointWriteDelay(int flags, double progress);
-extern bool ForwardFsyncRequest(RelFileNode rnode, ForkNumber forknum,
+extern bool ForwardFsyncRequest(RelFileNodeBackend rnode, ForkNumber forknum,
BlockNumber segno);
extern void AbsorbFsyncRequests(void);
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/storage/bufmgr.h,v 1.124 2010/01/23 16:37:12 sriggs Exp $
+ * $PostgreSQL: pgsql/src/include/storage/bufmgr.h,v 1.125 2010/08/13 20:10:53 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
extern Buffer ReadBufferExtended(Relation reln, ForkNumber forkNum,
BlockNumber blockNum, ReadBufferMode mode,
BufferAccessStrategy strategy);
-extern Buffer ReadBufferWithoutRelcache(RelFileNode rnode, bool isTemp,
+extern Buffer ReadBufferWithoutRelcache(RelFileNode rnode,
ForkNumber forkNum, BlockNumber blockNum,
ReadBufferMode mode, BufferAccessStrategy strategy);
extern void ReleaseBuffer(Buffer buffer);
extern BlockNumber RelationGetNumberOfBlocks(Relation relation);
extern void FlushRelationBuffers(Relation rel);
extern void FlushDatabaseBuffers(Oid dbid);
-extern void DropRelFileNodeBuffers(RelFileNode rnode, ForkNumber forkNum,
- bool istemp, BlockNumber firstDelBlock);
+extern void DropRelFileNodeBuffers(RelFileNodeBackend rnode,
+ ForkNumber forkNum, BlockNumber firstDelBlock);
extern void DropDatabaseBuffers(Oid dbid);
#ifdef NOT_USED
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/storage/relfilenode.h,v 1.25 2010/02/07 20:48:13 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/storage/relfilenode.h,v 1.26 2010/08/13 20:10:53 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef RELFILENODE_H
#define RELFILENODE_H
+#include "storage/backendid.h"
+
/*
* The physical storage of a relation consists of one or more forks. The
* main fork is always created, but in addition to that there can be
/*
* RelFileNode must provide all that we need to know to physically access
- * a relation. Note, however, that a "physical" relation is comprised of
+ * a relation, with the exception of the backend ID, which can be provided
+ * separately. Note, however, that a "physical" relation is comprised of
* multiple files on the filesystem, as each fork is stored as a separate
* file, and each fork can be divided into multiple segments. See md.c.
*
} RelFileNode;
/*
- * Note: RelFileNodeEquals compares relNode first since that is most likely
- * to be different in two unequal RelFileNodes. It is probably redundant
- * to compare spcNode if the other two fields are found equal, but do it
- * anyway to be sure.
+ * Augmenting a relfilenode with the backend ID provides all the information
+ * we need to locate the physical storage.
+ */
+typedef struct RelFileNodeBackend
+{
+ RelFileNode node;
+ BackendId backend;
+} RelFileNodeBackend;
+
+/*
+ * Note: RelFileNodeEquals and RelFileNodeBackendEquals compare relNode first
+ * since that is most likely to be different in two unequal RelFileNodes. It
+ * is probably redundant to compare spcNode if the other fields are found equal,
+ * but do it anyway to be sure.
*/
#define RelFileNodeEquals(node1, node2) \
((node1).relNode == (node2).relNode && \
(node1).dbNode == (node2).dbNode && \
(node1).spcNode == (node2).spcNode)
+#define RelFileNodeBackendEquals(node1, node2) \
+ ((node1).node.relNode == (node2).node.relNode && \
+ (node1).node.dbNode == (node2).node.dbNode && \
+ (node1).backend == (node2).backend && \
+ (node1).node.spcNode == (node2).node.spcNode)
+
#endif /* RELFILENODE_H */
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/storage/sinval.h,v 1.59 2010/02/26 02:01:28 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/storage/sinval.h,v 1.60 2010/08/13 20:10:53 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
* * invalidate an smgr cache entry for a specific physical relation
* * invalidate the mapped-relation mapping for a given database
* More types could be added if needed. The message type is identified by
- * the first "int16" field of the message struct. Zero or positive means a
+ * the first "int8" field of the message struct. Zero or positive means a
* specific-catcache inval message (and also serves as the catcache ID field).
* Negative values identify the other message types, as per codes below.
*
typedef struct
{
/* note: field layout chosen with an eye to alignment concerns */
- int16 id; /* cache ID --- must be first */
+ int8 id; /* cache ID --- must be first */
ItemPointerData tuplePtr; /* tuple identifier in cached relation */
Oid dbId; /* database ID, or 0 if a shared relation */
uint32 hashValue; /* hash value of key for this catcache */
typedef struct
{
- int16 id; /* type field --- must be first */
+ int8 id; /* type field --- must be first */
Oid dbId; /* database ID, or 0 if a shared catalog */
Oid catId; /* ID of catalog whose contents are invalid */
} SharedInvalCatalogMsg;
typedef struct
{
- int16 id; /* type field --- must be first */
+ int8 id; /* type field --- must be first */
Oid dbId; /* database ID, or 0 if a shared relation */
Oid relId; /* relation ID */
} SharedInvalRelcacheMsg;
typedef struct
{
- int16 id; /* type field --- must be first */
- RelFileNode rnode; /* physical file ID */
+ int8 id; /* type field --- must be first */
+ int8 backend_hi; /* high bits of backend ID, if temprel */
+ uint16 backend_lo; /* low bits of backend ID, if temprel */
+ RelFileNode rnode; /* spcNode, dbNode, relNode */
} SharedInvalSmgrMsg;
#define SHAREDINVALRELMAP_ID (-4)
typedef struct
{
- int16 id; /* type field --- must be first */
+ int8 id; /* type field --- must be first */
Oid dbId; /* database ID, or 0 for shared catalogs */
} SharedInvalRelmapMsg;
typedef union
{
- int16 id; /* type field --- must be first */
+ int8 id; /* type field --- must be first */
SharedInvalCatcacheMsg cc;
SharedInvalCatalogMsg cat;
SharedInvalRelcacheMsg rc;
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/storage/smgr.h,v 1.71 2010/02/26 02:01:28 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/storage/smgr.h,v 1.72 2010/08/13 20:10:53 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
#include "access/xlog.h"
#include "fmgr.h"
+#include "storage/backendid.h"
#include "storage/block.h"
#include "storage/relfilenode.h"
typedef struct SMgrRelationData
{
/* rnode is the hashtable lookup key, so it must be first! */
- RelFileNode smgr_rnode; /* relation physical identifier */
+ RelFileNodeBackend smgr_rnode; /* relation physical identifier */
/* pointer to owning pointer, or NULL if none */
struct SMgrRelationData **smgr_owner;
typedef SMgrRelationData *SMgrRelation;
+#define SmgrIsTemp(smgr) \
+ ((smgr)->smgr_rnode.backend != InvalidBackendId)
extern void smgrinit(void);
-extern SMgrRelation smgropen(RelFileNode rnode);
+extern SMgrRelation smgropen(RelFileNode rnode, BackendId backend);
extern bool smgrexists(SMgrRelation reln, ForkNumber forknum);
extern void smgrsetowner(SMgrRelation *owner, SMgrRelation reln);
extern void smgrclose(SMgrRelation reln);
extern void smgrcloseall(void);
-extern void smgrclosenode(RelFileNode rnode);
+extern void smgrclosenode(RelFileNodeBackend rnode);
extern void smgrcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo);
extern void smgrdounlink(SMgrRelation reln, ForkNumber forknum,
- bool isTemp, bool isRedo);
+ bool isRedo);
extern void smgrextend(SMgrRelation reln, ForkNumber forknum,
- BlockNumber blocknum, char *buffer, bool isTemp);
+ BlockNumber blocknum, char *buffer, bool skipFsync);
extern void smgrprefetch(SMgrRelation reln, ForkNumber forknum,
BlockNumber blocknum);
extern void smgrread(SMgrRelation reln, ForkNumber forknum,
BlockNumber blocknum, char *buffer);
extern void smgrwrite(SMgrRelation reln, ForkNumber forknum,
- BlockNumber blocknum, char *buffer, bool isTemp);
+ BlockNumber blocknum, char *buffer, bool skipFsync);
extern BlockNumber smgrnblocks(SMgrRelation reln, ForkNumber forknum);
extern void smgrtruncate(SMgrRelation reln, ForkNumber forknum,
- BlockNumber nblocks, bool isTemp);
+ BlockNumber nblocks);
extern void smgrimmedsync(SMgrRelation reln, ForkNumber forknum);
extern void smgrpreckpt(void);
extern void smgrsync(void);
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(RelFileNode rnode, ForkNumber forknum, bool isRedo);
+extern void mdunlink(RelFileNodeBackend rnode, ForkNumber forknum, bool isRedo);
extern void mdextend(SMgrRelation reln, ForkNumber forknum,
- BlockNumber blocknum, char *buffer, bool isTemp);
+ BlockNumber blocknum, char *buffer, bool skipFsync);
extern void 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 isTemp);
+ BlockNumber blocknum, char *buffer, bool skipFsync);
extern BlockNumber mdnblocks(SMgrRelation reln, ForkNumber forknum);
extern void mdtruncate(SMgrRelation reln, ForkNumber forknum,
- BlockNumber nblocks, bool isTemp);
+ BlockNumber nblocks);
extern void mdimmedsync(SMgrRelation reln, ForkNumber forknum);
extern void mdpreckpt(void);
extern void mdsync(void);
extern void mdpostckpt(void);
extern void SetForwardFsyncRequests(void);
-extern void RememberFsyncRequest(RelFileNode rnode, ForkNumber forknum,
+extern void RememberFsyncRequest(RelFileNodeBackend rnode, ForkNumber forknum,
BlockNumber segno);
-extern void ForgetRelationFsyncRequests(RelFileNode rnode, ForkNumber forknum);
+extern void ForgetRelationFsyncRequests(RelFileNodeBackend rnode,
+ ForkNumber forknum);
extern void ForgetDatabaseFsyncRequests(Oid dbid);
/* smgrtype.c */
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/utils/inval.h,v 1.49 2010/02/08 04:33:55 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/utils/inval.h,v 1.50 2010/08/13 20:10:54 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
extern void CacheInvalidateRelcacheByRelid(Oid relid);
-extern void CacheInvalidateSmgr(RelFileNode rnode);
+extern void CacheInvalidateSmgr(RelFileNodeBackend rnode);
extern void CacheInvalidateRelmap(Oid databaseId);
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.124 2010/02/26 02:01:29 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.125 2010/08/13 20:10:54 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
/* use "struct" here to avoid needing to include smgr.h: */
struct SMgrRelationData *rd_smgr; /* cached file handle, or NULL */
int rd_refcnt; /* reference count */
+ BackendId rd_backend; /* owning backend id, if temporary relation */
bool rd_istemp; /* rel is a temporary relation */
- bool rd_islocaltemp; /* rel is a temp rel of this session */
bool rd_isnailed; /* rel is nailed in cache */
bool rd_isvalid; /* relcache entry is valid */
char rd_indexvalid; /* state of rd_indexlist: 0 = not valid, 1 =
#define RelationOpenSmgr(relation) \
do { \
if ((relation)->rd_smgr == NULL) \
- smgrsetowner(&((relation)->rd_smgr), smgropen((relation)->rd_node)); \
+ smgrsetowner(&((relation)->rd_smgr), smgropen((relation)->rd_node, (relation)->rd_backend)); \
} while (0)
/*
* Beware of multiple eval of argument
*/
#define RELATION_IS_LOCAL(relation) \
- ((relation)->rd_islocaltemp || \
+ ((relation)->rd_backend == MyBackendId || \
(relation)->rd_createSubid != InvalidSubTransactionId)
/*
* Beware of multiple eval of argument
*/
#define RELATION_IS_OTHER_TEMP(relation) \
- ((relation)->rd_istemp && !(relation)->rd_islocaltemp)
+ ((relation)->rd_istemp && (relation)->rd_backend != MyBackendId)
/* routines in utils/cache/relcache.c */
extern void RelationIncrementReferenceCount(Relation rel);
projects / postgresql.git / commitdiff