Re: Detecting memory leaks with libpq?

On Tue, Jul 19, 2011 at 5:41 AM, Antonio Vieiro <antonio(at)antonioshome(dot)net>wrote:

> Hi all,
>
> I'm building a small C application that uses libpq and I was wondering
> if there's an easy way to detect memory leaks in my code.
>
> I think I'm calling PQclear and friends correctly, but I'd like to
> double-check it. I was wondering if there's a function in libpq to
> check memory-use usage/internals, or something like that.
>

Wrap your main logic in a loop that runs it 100,000 or more times. However,
the process itself should never exit (eg, only ever exist as one pid). As
the process runs, monitor it with top, htop (really nice util for Linux),
vmstat, etc... Does the memory usage go up and up, generally linearly with
time?

Run the same process using "electronic fence" [1] or "valgrind" [2].

[1] http://linux.die.net/man/3/efence (not for finding memory leaks per se,
but useful for finding memory mis-usage.
[2] http://valgrind.org/