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* PQpnames help
@ 1994-05-09 14:03 Patrick M. Landry <pml@cacs.usl.edu>
0 siblings, 1 reply; 2+ messages in thread
From: Patrick M. Landry @ 1994-05-09 14:03 UTC (permalink / raw)
To: legacy
Could someone post a code fragment demostrating the use of PQpnames?
I am trying to compile pgperl with postgres4.2. The regression tests
don't seem to deal with PQpnames. Thanks
--
patrick
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^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: PQpnames help
@ 1994-05-09 23:07 Paul M. Aoki <aoki@postgres.Berkeley.EDU>
parent: Patrick M. Landry <pml@cacs.usl.edu>
0 siblings, 0 replies; 2+ messages in thread
From: Paul M. Aoki @ 1994-05-09 23:07 UTC (permalink / raw)
To: Patrick M. Landry <pml@cacs.usl.edu>; +Cc: legacy
"Patrick M. Landry" <pml@cacs.usl.edu> writes:
> Could someone post a code fragment demostrating the use of PQpnames?
> I am trying to compile pgperl with postgres4.2. The regression tests
> don't seem to deal with PQpnames. Thanks
someone pointed out to us that you can't use the PQpnames that's there
without using portals_array_size, which is not the documented interface.
dooh. (it was extended to allow variable numbers of portals, since the
previous limit was just 10.) so this is the hack i came up with (it's
for src/backend/libpq/portal.c). i think it matches the documented
interface.
*** 1.18 1994/02/01 20:39:07
--- portal.c 1994/04/21 20:39:45
***************
*** 50,56 ****
* see utils/mmgr/portalmem.c for why. -cim 2/22/91
*
* IDENTIFICATION
! * $Header: /usr/local/devel/postgres/src/backend/libpq/RCS/portal.c,v 1.18 1994/02/01 20:39:07 jolly Exp $
* ----------------------------------------------------------------
*/
--- 50,56 ----
* see utils/mmgr/portalmem.c for why. -cim 2/22/91
*
* IDENTIFICATION
! * $Header: /usr/local/devel/postgres/src/backend/libpq/RCS/portal.c,v 1.19 1994/04/21 20:36:58 aoki Exp $
* ----------------------------------------------------------------
*/
***************
*** 61,67 ****
#include "tmp/libpq.h"
#include "utils/exc.h"
! RcsId("$Header: /usr/local/devel/postgres/src/backend/libpq/RCS/portal.c,v 1.18 1994/02/01 20:39:07 jolly Exp $");
/* ----------------
* exceptions
--- 61,67 ----
#include "tmp/libpq.h"
#include "utils/exc.h"
! RcsId("$Header: /usr/local/devel/postgres/src/backend/libpq/RCS/portal.c,v 1.19 1994/04/21 20:36:58 aoki Exp $");
/* ----------------
* exceptions
***************
*** 190,196 ****
--- 190,202 ----
/* --------------------------------
* PQpnames - Return all the portal names
* If rule_p, only return asynchronous portals.
+ *
* the caller must have allocated sufficient memory for char** pnames
+ * (an array of PQnportals strings of length PortalNameLength).
+ *
+ * notice that this assumes that the user is calling PQnportals and
+ * PQpnames with the same rule_p argument, and with no intervening
+ * portal closures. if not, you can get in heap big trouble..
* --------------------------------
*/
void
***************
*** 198,204 ****
char **pnames;
int rule_p;
{
! int i;
if (!valid_pointer("PQpnames: invalid name buffer", pnames))
return;
--- 204,210 ----
char **pnames;
int rule_p;
{
! int i, cur_pname = 0;
if (!valid_pointer("PQpnames: invalid name buffer", pnames))
return;
***************
*** 206,216 ****
for (i = 0; i < portals_array_size; ++i) {
if (portals[i] && portals[i]->portal) {
if (!rule_p || portals[i]->portal->rule_p) {
! (void) strncpy(pnames[i], portals[i]->name, PortalNameLength);
! continue;
}
}
- pnames[i][0] = '\0';
}
}
--- 212,221 ----
for (i = 0; i < portals_array_size; ++i) {
if (portals[i] && portals[i]->portal) {
if (!rule_p || portals[i]->portal->rule_p) {
! (void) strncpy(pnames[cur_pname], portals[i]->name, PortalNameLength);
! ++cur_pname;
}
}
}
}
--
Paul M. Aoki | CS Div., Dept. of EECS, UCB | aoki@postgres.Berkeley.EDU
| Berkeley, CA 94720 | ...!uunet!ucbvax!aoki
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===============================================================================
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