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Add a hack so that get_type_io_data() can work from bootstrap.c's

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internal TypInfo table in bootstrap mode.  This allows array_in and
array_out to be used during early bootstrap, which eliminates the
former obstacle to giving OUT parameters to built-in functions.
This commit is contained in:
Tom Lane
2006-08-15 22:36:17 +00:00
parent 355865c5a7
commit 1395ac6c67
3 changed files with 135 additions and 43 deletions
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38
src/backend/utils/cache/lsyscache.c vendored
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.135 2006/07/14 14:52:25 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.136 2006/08/15 22:36:17 tgl Exp $
*
* NOTES
* Eventually, the index information should go through here, too.
@ -16,6 +16,7 @@
#include "postgres.h"
#include "access/hash.h"
#include "bootstrap/bootstrap.h"
#include "catalog/pg_amop.h"
#include "catalog/pg_amproc.h"
#include "catalog/pg_namespace.h"
@ -24,6 +25,7 @@
#include "catalog/pg_proc.h"
#include "catalog/pg_statistic.h"
#include "catalog/pg_type.h"
#include "miscadmin.h"
#include "nodes/makefuncs.h"
#include "utils/array.h"
#include "utils/builtins.h"
@ -1350,7 +1352,7 @@ get_typlenbyvalalign(Oid typid, int16 *typlen, bool *typbyval,
* This knowledge is intended to be centralized here --- direct references
* to typelem elsewhere in the code are wrong, if they are associated with
* I/O calls and not with actual subscripting operations! (But see
* bootstrap.c, which can't conveniently use this routine.)
* bootstrap.c's boot_get_type_io_data() if you need to change this.)
*
* As of PostgreSQL 8.1, output functions receive only the value itself
* and not any auxiliary parameters, so the name of this routine is now
@ -1392,6 +1394,38 @@ get_type_io_data(Oid typid,
HeapTuple typeTuple;
Form_pg_type typeStruct;
/*
* In bootstrap mode, pass it off to bootstrap.c. This hack allows
* us to use array_in and array_out during bootstrap.
*/
if (IsBootstrapProcessingMode())
{
Oid typinput;
Oid typoutput;
boot_get_type_io_data(typid,
typlen,
typbyval,
typalign,
typdelim,
typioparam,
&typinput,
&typoutput);
switch (which_func)
{
case IOFunc_input:
*func = typinput;
break;
case IOFunc_output:
*func = typoutput;
break;
default:
elog(ERROR, "binary I/O not supported during bootstrap");
break;
}
return;
}
typeTuple = SearchSysCache(TYPEOID,
ObjectIdGetDatum(typid),
0, 0, 0);