a2226ad237
this is an old patch which I have already submitted and never seen
in the sources. It corrects the datatype oids used in some iterator
functions. This bug has been reported to me by many other people.
contrib-datetime.patch
some code contributed by Reiner Dassing <dassing@wettzell.ifag.de>
contrib-makefiles.patch
fixes all my contrib makefiles which don't work with some compilers,
as reported to me by another user.
contrib-miscutil.patch
an old patch for one of my old contribs.
contrib-string.patch
a small change to the c-like text output functions. Now the '{'
is escaped only at the beginning of the string to distinguish it
from arrays, and the '}' is no more escaped.
elog-lineno.patch
adds the current lineno of CopyFrom to elog messages. This is very
useful when you load a 1 million tuples table from an external file
and there is a bad value somehere. Currently you get an error message
but you can't know where is the bad data. The patch uses a variable
which was declared static in copy.c. The variable is now exported
and initialized to 0. It is always cleared at the end of the copy
or at the first elog message or when the copy is canceled.
I know this is very ugly but I can't find any better way of knowing
where the copy fails and I have this problem quite often.
plperl-makefile.patch
fixes a typo in a makefile, but the error must be elsewhere because
it is a file generated automatically. Please have a look.
tprintf-timestamp.patch
restores the original 2-digit year format, assuming that the two
century digits don't carry much information and that '000202' is
easier to read than 20000202. Being only a log file it shouldn't
break anything.
Please apply the patches before the next scheduled code freeze.
I also noticed that some of the contribs don't compile correcly. Should we
ask people to fix their code or rename their makefiles so that they are
ignored by the top makefile?
--
Massimo Dal Zotto
149 lines
2.7 KiB
C
149 lines
2.7 KiB
C
/*
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* misc_utils.c --
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*
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* This file defines miscellaneous PostgreSQL utility functions.
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*
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* Copyright (C) 1999, Massimo Dal Zotto <dz@cs.unitn.it>
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*
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* This file is distributed under the GNU General Public License
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* either version 2, or (at your option) any later version.
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*/
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#include <unistd.h>
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#include <signal.h>
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#include <string.h>
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#include <errno.h>
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#include "postgres.h"
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#include "access/heapam.h"
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#include "access/htup.h"
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#include "access/relscan.h"
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#include "access/skey.h"
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#include "access/tupdesc.h"
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#include "catalog/catname.h"
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#include "catalog/pg_listener.h"
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#include "storage/lmgr.h"
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#include "utils/fmgr.h"
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#include "utils/palloc.h"
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#include "utils/rel.h"
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#include "utils/tqual.h"
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#include "misc_utils.h"
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#define MIN(x,y) ((x)<=(y) ? (x) : (y))
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extern int ExecutorLimit(int limit);
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extern void Async_Unlisten(char *relname, int pid);
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extern int assertTest(int val);
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#ifdef ASSERT_CHECKING_TEST
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extern int assertEnable(int val);
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#endif
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int
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query_limit(int limit)
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{
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return ExecutorLimit(limit);
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}
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int
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backend_pid()
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{
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return getpid();
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}
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int
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unlisten(char *relname)
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{
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Async_Unlisten(relname, getpid());
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return 0;
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}
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int
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max(int x, int y)
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{
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return ((x > y) ? x : y);
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}
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int
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min(int x, int y)
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{
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return ((x < y) ? x : y);
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}
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/*
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* Return the number of active listeners on a relation name.
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*/
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int
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active_listeners(text *relname)
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{
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HeapTuple lTuple;
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Relation lRel;
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HeapScanDesc sRel;
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TupleDesc tdesc;
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ScanKeyData key;
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Datum d;
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bool isnull;
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int len, pid;
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int count = 0;
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int ourpid = getpid();
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char listen_name[NAMEDATALEN];
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lRel = heap_openr(ListenerRelationName, AccessShareLock);
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tdesc = RelationGetDescr(lRel);
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if (relname && (VARSIZE(relname) > VARHDRSZ)) {
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len = MIN(VARSIZE(relname)-VARHDRSZ, NAMEDATALEN-1);
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strncpy(listen_name, VARDATA(relname), len);
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listen_name[len] = '\0';
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ScanKeyEntryInitialize(&key, 0,
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Anum_pg_listener_relname,
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F_NAMEEQ,
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PointerGetDatum(listen_name));
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sRel = heap_beginscan(lRel, 0, SnapshotNow, 1, &key);
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} else {
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sRel = heap_beginscan(lRel, 0, SnapshotNow, 0, (ScanKey)NULL);
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}
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while (HeapTupleIsValid(lTuple = heap_getnext(sRel, 0)))
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{
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d = heap_getattr(lTuple, Anum_pg_listener_pid, tdesc, &isnull);
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pid = DatumGetInt32(d);
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if ((pid == ourpid) || (kill(pid, SIGTSTP) == 0)) {
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/* elog(NOTICE, "%d ok", pid); */
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count++;
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}
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}
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heap_endscan(sRel);
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heap_close(lRel, AccessShareLock);
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return count;
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}
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#ifdef USE_ASSERT_CHECKING
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int
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assert_enable(int val)
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{
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return assertEnable(val);
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}
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#ifdef ASSERT_CHECKING_TEST
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int
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assert_test(int val)
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{
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return assertTest(val);
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}
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#endif
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#endif
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/* end of file */
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/*
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* Local Variables:
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* tab-width: 4
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* c-indent-level: 4
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* c-basic-offset: 4
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* End:
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*/
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