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Is it possible to have a robust futex outside of a mutex?

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From: Gilles Carry <Gilles.Carry@...>
To: <linux-kernel@...>
Subject: Is it possible to have a robust futex outside of a mutex?
Date: Thursday, October 4, 2007 - 10:14 am

Hi,

Is there is any way to use a robust futex without an associated mutex?
In the kernel, exit_robust_list only handles futexes associated with a mutex (through futex_offset).
Implementation of pthread_cond_xxx (broadcast, wait, ...) functions uses several futexes (lll_lock) in glibc which cannot be handled as robust.
However a thread locking one of these internal futexes can be killed while there are other waiters.
Am I right?

Thanks.
G+
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Is it possible to have a robust futex outside of a mutex?, Gilles Carry, (Thu Oct 4, 10:14 am)