On 15/03/18 08:13, Udit agarwal wrote:
Oh yes, i think i misinterpreted your previous suggestion of
surrounding the while loop by mutex, it should be the outer while
loop. some thing like this?:
while (n > 0) {
uint32_t random;
size_t copy;
rtems_mutex_lock(&atsam_trng_mutex);
Now you correctly use the mutex to produce 32-bits of random data.
Currently the likely user of getrandom() is
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;a=blob;f=newlib/libc/stdlib/arc4random.c;h=3cccc3ed46a5e9e756d4e216cb7686589eb60993;hb=HEAD#l89
So, you need 12 mutex lock/unlock operations for this. I would protect
the while (n > 0) loop with a single mutex lock/unlock.
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone : +49 89 189 47 41-16
Fax : +49 89 189 47 41-09
E-Mail : sebastian.hu...@embedded-brains.de
PGP : Public key available on request.
Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
_______________________________________________
devel mailing list
devel@rtems.org
http://lists.rtems.org/mailman/listinfo/devel
