Setting to prevent memory allocation

[Joel Sherrill]

On 05/06/2010 03:51 PM, Yaklin, Allan C wrote:
>
> I apologize for cluttering your inboxes, but I didn’t ask the right 
> question the first time around.
>
> Does the RTEMS kernel dynamically allocate memory?  If it does, is 
> there a setting in confdefs.h to prevent it?
>
Not via malloc at all.  But after the 1st task runs, it is
only in a very few specific places:

+ thread create (for stacks, etc)
+ message queue create


POSIX may do a few others but that should be it for the Classic API.

Those come from the RTEMS Workspace.

--joel
>
> --
>
> Allan Yaklin
>
> acyakli at sandia.gov
>
> (505) 284-8660
>
> *From:* rtems-users-bounces at rtems.org 
> [mailto:rtems-users-bounces at rtems.org] *On Behalf Of *Yaklin, Allan C
> *Sent:* Thursday, May 06, 2010 12:34 PM
> *To:* 'rtems-users at rtems.com'
> *Subject:* Setting to prevent memory allocation
>
> Hello,
>
> I’m working on an embedded system with limited memory, and we were 
> wondering if there was a way to prevent RTEMS programs from dynamic 
> allocating memory.  I was specifically thinking of a possible setting 
> in confdefs.h, but I was unable to find anything relevant when 
> searching through the file.  Is this possible in RTEMS?
>
> --
>
> Allan Yaklin
>
> acyakli at sandia.gov
>


-- 
Joel Sherrill, Ph.D.             Director of Research&  Development
joel.sherrill at OARcorp.com        On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
    Support Available             (256) 722-9985