threads and malloc/free on freebsd 8.0

[Vikash Badal]

> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org [mailto:owner-freebsd-
> questions at freebsd.org] On Behalf Of Dan Nelson
> Sent: 11 June 2010 09:56 PM
> To: Vikash Badal
> Cc: freebsd-questions at freebsd.org
> Subject: Re: threads and malloc/free on freebsd 8.0
> 
 
> The fix is to remove your second call to malloc_usable_size(z)).  Then
> neither version will crash.  Also, a useful habit to start is to
> explicitly
> zero the pointer you just free'd, to prevent it from being used
> accidentally
> later.

Made this change:

<CODE>-----------
   LogMessage(DEBUG_0, "allocated %ld", malloc_usable_size(inst));
   
   free(inst);
   free(inst);
   
    return 0;
-----------</CODE>

Still no seg fault.

The reason im am doing this is that from top I can see the memory grow as I connect to this app.
When I disconnect, the memory used ( as displayed from top ) does not decrease.


I tried:
<CODE>-------------

char *chunk;
chunk = (char*) malloc(1200000);
sleep(30);
free(chunk)
sleep(30);

free(inst);
free(inst);

------------------</CODE>

Top show the memory for the chunk section increase and then decrease  when freed

However, the when I leave the worker thread ( close the connection ), the memory usage does not decrease.

The more connections I open and close, the faster the memory grows.


> 
> --
> 	Dan Nelson
> 	dnelson at allantgroup.com
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