values and <replaceable
class="parameter">oid_value</replaceable> for its OID. If
<replaceable class="parameter">oid_value</replaceable> is zero
- (0) or the clause is omitted, then the next available OID is
- used.
+ (0) or the clause is omitted, and the table has OIDs, then the
+ next available OID is assigned.
</para>
<para>
/*
* Check for wraparound of the OID counter. We *must* not return 0
* (InvalidOid); and as long as we have to check that, it seems a good
- * idea to skip over everything below BootstrapObjectIdData too. (This
+ * idea to skip over everything below FirstNormalObjectId too. (This
* basically just reduces the odds of OID collision right after a wrap
* occurs.) Note we are relying on unsigned comparison here.
+ *
+ * During initdb, we start the OID generator at FirstBootstrapObjectId,
+ * so we only enforce wrapping to that point when in bootstrap or
+ * standalone mode. The first time through this routine after normal
+ * postmaster start, the counter will be forced up to FirstNormalObjectId.
+ * This mechanism leaves the OIDs between FirstBootstrapObjectId and
+ * FirstNormalObjectId available for automatic assignment during initdb,
+ * while ensuring they will never conflict with user-assigned OIDs.
*/
- if (ShmemVariableCache->nextOid < ((Oid) BootstrapObjectIdData))
+ if (ShmemVariableCache->nextOid < ((Oid) FirstNormalObjectId))
{
- ShmemVariableCache->nextOid = BootstrapObjectIdData;
- ShmemVariableCache->oidCount = 0;
+ if (IsPostmasterEnvironment)
+ {
+ /* wraparound in normal environment */
+ ShmemVariableCache->nextOid = FirstNormalObjectId;
+ ShmemVariableCache->oidCount = 0;
+ }
+ else
+ {
+ /* we may be bootstrapping, so don't enforce the full range */
+ if (ShmemVariableCache->nextOid < ((Oid) FirstBootstrapObjectId))
+ {
+ /* wraparound in standalone environment? */
+ ShmemVariableCache->nextOid = FirstBootstrapObjectId;
+ ShmemVariableCache->oidCount = 0;
+ }
+ }
}
/* If we run out of logged for use oids then we must log more */
checkPoint.undo = checkPoint.redo;
checkPoint.ThisTimeLineID = ThisTimeLineID;
checkPoint.nextXid = FirstNormalTransactionId;
- checkPoint.nextOid = BootstrapObjectIdData;
+ checkPoint.nextOid = FirstBootstrapObjectId;
checkPoint.time = time(NULL);
ShmemVariableCache->nextXid = checkPoint.nextXid;
fi
done
-# Get FirstGenBKIObjectId from access/transam.h
-for dir in $INCLUDE_DIRS; do
- if [ -f "$dir/access/transam.h" ]; then
- BKIOBJECTID=`grep '^#define[ ]*FirstGenBKIObjectId' $dir/access/transam.h | $AWK '{ print $3 }'`
- break
- fi
-done
-export BKIOBJECTID
-
touch ${OUTPUT_PREFIX}.description.$$
# ----------------
# contents of a catalog definition.
# reln_open is a flag indicating when we are processing DATA lines.
# (i.e. have a relation open and need to close it)
-# nextbkioid is the next OID available for automatic assignment.
-# oid is the most recently seen or assigned oid.
+# oid is the most recently seen oid, or 0 if none in the last DATA line.
# ----------------
BEGIN {
inside = 0;
nc = 0;
reln_open = 0;
comment_level = 0;
- nextbkioid = ENVIRON["BKIOBJECTID"];
oid = 0;
}
# ----------------
# DATA() statements are basically passed right through after
-# stripping off the DATA( and the ) on the end. However,
-# if we see "OID = 0" then we should assign an oid from nextbkioid.
-# Remember any explicit or assigned OID for use by DESCR().
+# stripping off the DATA( and the ) on the end.
+# Remember any explicit OID for use by DESCR().
# ----------------
/^DATA\(/ {
data = substr($0, 6, length($0) - 6);
if (nf >= 4 && datafields[1] == "insert" && datafields[2] == "OID" && datafields[3] == "=")
{
oid = datafields[4];
- if (oid == 0)
- {
- oid = nextbkioid;
- nextbkioid++;
- sub("OID *= *0", "OID = " oid, data);
- }
}
print data;
next;
* --------
*/
-int Trace_lock_oidmin = BootstrapObjectIdData;
+int Trace_lock_oidmin = FirstNormalObjectId;
bool Trace_locks = false;
bool Trace_userlocks = false;
int Trace_lock_table = 0;
GUC_NOT_IN_SAMPLE
},
&Trace_lock_oidmin,
- BootstrapObjectIdData, 0, INT_MAX, NULL, NULL
+ FirstNormalObjectId, 0, INT_MAX, NULL, NULL
},
{
{"trace_lock_table", PGC_SUSET, DEVELOPER_OPTIONS,
ControlFile.checkPointCopy.undo = ControlFile.checkPointCopy.redo;
ControlFile.checkPointCopy.ThisTimeLineID = 1;
ControlFile.checkPointCopy.nextXid = (TransactionId) 514; /* XXX */
- ControlFile.checkPointCopy.nextOid = BootstrapObjectIdData;
+ ControlFile.checkPointCopy.nextOid = FirstBootstrapObjectId;
ControlFile.checkPointCopy.time = time(NULL);
ControlFile.state = DB_SHUTDOWNED;
* OIDs 1-9999 are reserved for manual assignment (see the files
* in src/include/catalog/).
*
- * OIDS 10000-16383 are reserved for assignment by genbki.sh.
+ * OIDS 10000-16383 are reserved for assignment during initdb
+ * using the OID generator. (We start the generator at 10000.)
*
- * OIDs beginning at 16384 are assigned at runtime from the OID
- * generator. (The first few of these will be assigned during initdb,
- * to objects created after the initial BKI script processing.)
+ * OIDs beginning at 16384 are assigned from the OID generator
+ * during normal multiuser operation. (We force the generator up to
+ * 16384 as soon as we are in normal operation.)
*
* The choices of 10000 and 16384 are completely arbitrary, and can be moved
* if we run low on OIDs in either category. Changing the macros below
* should be sufficient to do this.
*
- * NOTE: if the OID generator wraps around, we should skip over OIDs 0-16383
+ * NOTE: if the OID generator wraps around, we skip over OIDs 0-16383
* and resume with 16384. This minimizes the odds of OID conflict, by not
* reassigning OIDs that might have been assigned during initdb.
* ----------
*/
-#define FirstGenBKIObjectId 10000
-#define BootstrapObjectIdData 16384
+#define FirstBootstrapObjectId 10000
+#define FirstNormalObjectId 16384
/*
* VariableCache is placed in shmem and used by
#
# duplicate_oids
#
-# finds oids that are duplicated in the system tables.
+# $PostgreSQL$
#
-
-FILES=`ls pg_*.h`
-
+# finds manually-assigned oids that are duplicated in the system tables.
#
-# The previous version did not use the -d option on uniq
-# so check here that it is supported.
-# Otherwise, use the old algorithm
+# run this script in src/include/catalog.
#
-if [ `uniq -d < /dev/null > /dev/null 2>&1` ]; then
- echo "uniq -d is not supported on your platform."
- echo "Please report this to pgsql-hackers@postgresql.org"
-
-egrep '^DATA' $FILES | \
- sed -e 's/^.*OID[^=]*=[^0-9]*//' -e 's/[^0-9].*$//' | \
- sort -n >/tmp/alloids.$$
-uniq /tmp/alloids.$$ >/tmp/uniqoids.$$
-
-diff -u /tmp/alloids.$$ /tmp/uniqoids.$$ | \
- grep -v '/tmp/' | \
- grep '^-' | \
- sed -e 's/^-//' | \
- grep -v '^0$' | \
- uniq
-rm /tmp/alloids.$$
-rm /tmp/uniqoids.$$
-
-else
-
-# echo "uniq -d is supported on this platform."
-# echo "Will omit the use of temporary files."
+FILES=`ls pg_*.h`
egrep '^DATA' $FILES | \
sed -e 's/^.*OID[^=]*=[^0-9]*//' -e 's/[^0-9].*$//' | \
sort -n | uniq -d | \
- egrep -v '^[0]*$'
-
-fi
+ egrep -v '^0*$'
-exit
+exit 0
#!/bin/sh
+#
# unused_oids
#
# $PostgreSQL$
#
-# finds blocks of oids that have not already been claimed by
-# post_hackers for internal purposes. primarily useful for
-# finding valid oids for new internal function oids. the numbers
-# printed are inclusive ranges of valid (unused) oids.
+# finds blocks of manually-assignable oids that have not already been
+# claimed by post_hackers. primarily useful for finding available
+# oids for new internal functions. the numbers printed are inclusive
+# ranges of unused oids.
#
# before using a large empty block, make sure you aren't about
# to take over what was intended as expansion space for something
-# else. also, before using a number, do a "grepsrc" to make sure
-# that someone isn't using a literal numeric constant somewhere..
-#
-# non-berkeley post_hackers should probably not try to use oids
-# less than the highest one that comes with the distributed source.
+# else.
#
# run this script in src/include/catalog.
#
AWK="awk"
-# Get FirstGenBKIObjectId from access/transam.h
-BKIOBJECTID=`grep '#define[ ]*FirstGenBKIObjectId' ../access/transam.h | $AWK '{ print $3 }'`
-export BKIOBJECTID
+# Get FirstBootstrapObjectId from access/transam.h
+FIRSTOBJECTID=`grep '#define[ ]*FirstBootstrapObjectId' ../access/transam.h | $AWK '{ print $3 }'`
+export FIRSTOBJECTID
egrep '^DATA' pg_*.h | \
sed -e 's/^.*OID[^=]*=[^0-9]*//' -e 's/[^0-9].*$//' | \
last = $1;
}
END {
- print last + 1, "-", ENVIRON["BKIOBJECTID"]-1;
+ print last + 1, "-", ENVIRON["FIRSTOBJECTID"]-1;
}'
projects / users / bernd / postgres.git / commitdiff