<div dir="ltr">Yes I was looking for same present in Thread_Lock_control. I might some how missed it while going through Thread_Control_struct. Thanks. Then as lock is present then I suppose we might have certainly taken care of data race conditions.<br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr">Thanks,<div><br></div><div>Saurabh Gadia</div></div></div></div>
<br><div class="gmail_quote">On Thu, Jul 16, 2015 at 12:19 AM, Sebastian Huber <span dir="ltr"><<a href="mailto:sebastian.huber@embedded-brains.de" target="_blank">sebastian.huber@embedded-brains.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=""><br>
<br>
On 16/07/15 01:49, Saurabh Gadia wrote:<br>
</span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
Is there any explicit locking to avoid data races condition on members of Thread_Control_struct in rtems? As for mutex we have ticket_lock over its wait_queue in SMP architecture which can serve as explicit locking in mutex. For thread I feel data race condition may happen while setting *thread->current_priority. *As it is updated by thread while restoring its priority and while some other thread trying to promote for nested_mutex behavior.<br>
</blockquote>
<br>
There is no data race condition, see _Thread_Change_priority() and Thread_Lock_control. There is a potential problem with a deadlock at spin lock level however, in case the application provokes a deadlock at object level. This needs some further investigation.<span class="HOEnZb"><font color="#888888"><br>
<br>
-- <br>
Sebastian Huber, embedded brains GmbH<br>
<br>
Address : Dornierstr. 4, D-82178 Puchheim, Germany<br>
Phone : <a href="tel:%2B49%2089%20189%2047%2041-16" value="+4989189474116" target="_blank">+49 89 189 47 41-16</a><br>
Fax : <a href="tel:%2B49%2089%20189%2047%2041-09" value="+4989189474109" target="_blank">+49 89 189 47 41-09</a><br>
E-Mail : <a href="mailto:sebastian.huber@embedded-brains.de" target="_blank">sebastian.huber@embedded-brains.de</a><br>
PGP : Public key available on request.<br>
<br>
Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.<br>
<br>
</font></span></blockquote></div><br></div>