[OPEN-ILS-DEV] PATCH: oils_cstore.c (memory leaks)

Mike Rylander mrylander at gmail.com
Mon Feb 11 08:29:29 EST 2008

On Feb 10, 2008 11:32 PM, Scott McKellar <mck9 at swbell.net> wrote:
> This patch plugs a couple of memory leaks, and applies some minor
> optimizations, as much for clarity as for performance.

Applied, with thanks as usual. :)

> 1. In buildSELECT() we were leaking defaultselhash in the case of an
> early return.
> 2. In doFieldmapperSearch() we were leaking flesh_blob in the case
> of an early return.
> 3. In doFieldmapperSearch() I rearranged the logic a bit.  First,
> I performed a single search of meta to get a method type and saved
> the result for reuse, instead of performing the identical search
> repeatedly.  Second, I turned a series of ifs into a series of
> if/elses.  That way we stop searching when we find a match.  More
> importantly, the if/else structure makes it more clear to the reader
> that we're really just branching on method type in a case structure.
> This latter change requires that none of the branches changes the
> contents of ctx->method->userData.  So far as I can tell by tracing
> out all the branches, this condition is satisfied, as one would
> intuitively expect.
> 4. Also in doFieldmapperSearch(): I increased the size of the
> growing_buffer sel_list from 16 characters to 64.  Since the
> formatted string is at least 13 characters long, depending on the
> length of the class name and primary key, I suspect that 16
> characters will almost never be big enough.  Even 64 characters
> might be too short.  I don't know how long the values typically
> are in practice.
> Scott McKellar
> http://home.swbell.net/mck9/ct/
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Mike Rylander
 | VP, Research and Design
 | Equinox Software, Inc. / The Evergreen Experts
 | phone:  1-877-OPEN-ILS (673-6457)
 | email:  miker at esilibrary.com
 | web:  http://www.esilibrary.com

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