From: | Martin French <Martin(dot)French(at)romaxtech(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, pgsql-general(at)postgresql(dot)org, pgsql-general-owner(at)postgresql(dot)org |
Subject: | Re: C Function Memory Management |
Date: | 2012-12-12 15:37:55 |
Message-ID: | OF1966B1DE.9C8C2699-ON80257AD2.0055AC07-80257AD2.0055DEA8@romaxtech.com |
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Thread: | |
Lists: | pgsql-general |
>
> One thing to know about it is that repalloc re-sizes the given chunk
> while keeping it in the same memory context it was originally allocated
> in (ie, CurrentMemoryContext doesn't matter). This may not matter much
> if you're only dealing with allocations that just live as long as the
> current function call --- but if you're trying to preserve data across
> calls, it's critical to know.
>
> regards, tom lane
Thanks for this Tom, I'll keep that in mind for future functions.
In this particular implementation, it's not necessary to preserve the data
once the function is complete.
So out of curiosity, what would be your approach for data preservation
cross call?
Cheers
Martin
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