Re: Do we want a xmalloc or similar function in the Backend?

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Andres Freund <andres(at)2ndquadrant(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Do we want a xmalloc or similar function in the Backend?
Date: 2012-06-19 17:35:53
Message-ID: CA+TgmoY1obwUcG6obniKRahB1QZcF1cQQhrN=_nZRjT4dgiPow@mail.gmail.com
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On Tue, Jun 19, 2012 at 10:17 AM, Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
> There are 70+ calls of malloc in the backend in the form of
>
> type* foo = malloc(sizeof(...));
> if(!foo)
>   elog(ERROR, "could not allocate memory");
>
> which is a bit annoying to write at times. Would somebody argue against
> introducing a function that does the above named xmalloc() or malloc_or_die()?

I can't even find 70 malloc calls in the entire backend, let alone 70
with that pattern. Still, I don't think malloc_or_error (not die)
would be a bad idea.

But the error should definitely be written as:

ereport(ERROR,
(errcode(ERRCODE_OUT_OF_MEMORY),
errmsg("out of memory")));

...not elog.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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