Re: posix_memalign not available

["Schmidt, Mihael" <Mihael.Schmidt@xxxxxxxxxxx>]

Oh. Thanx for the info. Didn't know that. So I could just return the allocated memory without checking.

Mihael 

-----Original Message-----
From: c400-l-bounces+mihael.schmidt=rossmann.de@xxxxxxxxxxxx [mailto:c400-l-bounces+mihael.schmidt=rossmann.de@xxxxxxxxxxxx] On Behalf Of Mark S. Waterbury
Sent: Monday, December 13, 2010 3:44 PM
To: C programming iSeries / AS400
Subject: Re: [C400-L] posix_memalign not available

Mihael:

No "memalign" function is needed on OS/400 or i5/OS. All allocations 
from the are always aligned on a quadword (16 byte) boundary, unless you 
take actions to override this default behavior.

Consider what happens if you allocate a chunk of memory to contain a 
data structure that contains one or more MI pointers.  If the allocated 
block was not aligned on a quadword, how would you ever know that the MI 
pointers within your data structures would be properly aligned (at runtime)?

Mark

On 12/13/2010 9:27 AM, Schmidt, Mihael wrote:
> Hi,
>
> as there is no memalign (or posix_memalign) function on the i I am trying to roll my own. Does anybody sees some obvious mistake in my posix_memalign implementation?
>
> I used this as a base for implementation: http://linux.die.net/man/3/posix_memalign
>
> Thanx for any advice
> ...(snip)...