Date: Mon, 3 Dec 2012 05:38:50 -0800
From: David Fetter <david@fetter.org>
To: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: rk204885@gmail.com, pgsql-general@postgresql.org,
	w^3 <pgsql-www@postgresql.org>
Subject: Re: MODERATOR WARNING  Re: [GENERAL] Exception Handling in
	C-Language Functions?
Message-ID: <20121203133850.GB1254@fetter.org>
References: <1354511937712-5734656.post@n5.nabble.com>
	<20121203061454.GB4601@alvh.no-ip.org>
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OK :)

Is there a way to do this automatically?

Cheers,
David.
On Mon, Dec 03, 2012 at 03:14:54AM -0300, Alvaro Herrera wrote:
> MODERATOR WARNING
>=20
> I noticed that this guy Rahul seems to be reinjecting old list emails
> somehow.  Please don't approve anything coming from him.  Observe this
> example:
>=20
> http://postgresql.1045698.n5.nabble.com/Re-GENERAL-MS-Access-and-Stored-p=
rocedures-td1843848.html
> http://postgresql.1045698.n5.nabble.com/Re-GENERAL-MS-Access-and-Stored-p=
rocedures-td5734652.html
> The original message was posted in 2005!
>=20
> The message here is this one (also in 2005):
> http://postgresql.1045698.n5.nabble.com/GENERAL-Exception-Handling-in-C-L=
anguage-Functions-td1843896.html
>=20
> I have no idea what's going on.  Maybe it's something to do with Nabble.
> There are others pending moderation in pgsql-admin and pgsql-hackers too.
>=20
> rahul143 wrote:
> > I have the created a C-Language function (code is below).  Now, I=20
> > wonder: How do I handle exceptions, for example if malloc cannot assign=
=20
> > the necessary memory?  Do "palloc" and "pfree" handle such a case=20
> > cleanly?  Should I simply use an "assert"?=20
> >=20
> > #include "postgres.h"=20
> > #include <string.h>=20
> > #include <stdlib.h>=20
> > #include "fmgr.h"=20
> > #include "libinn.h"=20
> >=20
> > PG_FUNCTION_INFO_V1(ffiinews_uwildmat);=20
> >=20
> > /* Wrapper for INN's function uwildmat.  Needs parameters in UTF-8. */=
=20
> > Datum ffiinews_uwildmat(PG_FUNCTION_ARGS) {=20
> >     VarChar *text =3D PG_GETARG_VARCHAR_P(0);=20
> >     VarChar *pattern =3D PG_GETARG_VARCHAR_P(1);=20
> >     int text_len =3D VARSIZE(text)-VARHDRSZ;=20
> >     int pattern_len =3D VARSIZE(pattern)-VARHDRSZ;=20
> >     char *tmp_text =3D (char *)malloc(text_len+1);=20
> >     if (tmp_text =3D=3D NULL)=20
> >         ; /* What now? */=20
> >     char *tmp_pattern =3D (char *)malloc(pattern_len+1);=20
> >     if (tmp_pattern =3D=3D NULL)=20
> >         ; /* What now? */=20
> >     strncpy(tmp_text, VARDATA(text), text_len);=20
> >     tmp_text[text_len] =3D '\0';=20
> >     strncpy(tmp_pattern, VARDATA(pattern), pattern_len);=20
> >     tmp_pattern[pattern_len] =3D '\0';=20
> >     bool matches =3D uwildmat(tmp_text, tmp_pattern);=20
> >=20
> >=20
> >=20
> > -----
> >=20
> >=20
> >=20
> >=20
> > --
> > View this message in context: http://postgresql.1045698.n5.nabble.com/G=
ENERAL-Exception-Handling-in-C-Language-Functions-tp5734656.html
> > Sent from the PostgreSQL - general mailing list archive at Nabble.com.
> >=20
> >=20
> > --=20
> > Sent via pgsql-general mailing list (pgsql-general@postgresql.org)
> > To make changes to your subscription:
> > http://www.postgresql.org/mailpref/pgsql-general
>=20
>=20
> --=20
> =C1lvaro Herrera                http://www.2ndQuadrant.com/
> PostgreSQL Development, 24x7 Support, Training & Services

--=20
David Fetter <david@fetter.org> http://fetter.org/
Phone: +1 415 235 3778  AIM: dfetter666  Yahoo!: dfetter
Skype: davidfetter      XMPP: david.fetter@gmail.com
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