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From: Sebastian Huber <sebastian.huber@embedded-brains.de>
To: "Joël Krähemann" <jkraehemann@gmail.com>
Cc: libc-help@sourceware.org
Subject: Re: pthread_mutex_timedlock() vs. clock_settime()
Date: Thu, 4 Aug 2022 01:44:10 +0200	[thread overview]
Message-ID: <deca758d-727c-e812-6a1d-e227585847a1@embedded-brains.de> (raw)
In-Reply-To: <CA+Owze7ZSu+_VzBVvFwCQ0gqqHHBsf3RkXsU_YVxbKWwU2AVtw@mail.gmail.com>

Hello Joël,

On 01/08/2022 09:10, Joël Krähemann wrote:
> Hi Sebastian,
> 
> You have a dead-lock, probably. I just looked at your code. You are
> using non-recursive mutices and I think this mutex was locked twice by
> the very same thread.

thanks for having a look at the test case. Sorry for being so blind, but 
which mutex is where in the code locked twice by the same thread?

If I omit the mutex test case by starting with ACTION_CND_WAIT:

   for (action = ACTION_CND_WAIT; action < ACTION_TERMINATE; ++action) {
     event_post(&ctx->action, action);

Then the test runs fine:

*** timeout finite ***
pthread_cond_timedwait
wake up
pthread_cond_timedwait: actual 'Connection timed out', expected 
'Connection timed out'
pthread_rwlock_timedrdlock
wake up
pthread_rwlock_timedrdlock: actual 'Connection timed out', expected 
'Connection timed out'
pthread_rwlock_timedwrlock
wake up
pthread_rwlock_timedwrlock: actual 'Connection timed out', expected 
'Connection timed out'
sem_timedwait
wake up
sem_timedwait: actual 'Connection timed out', expected 'Connection timed 
out'
mq_send
mq_timedsend
wake up
mq_timedsend: actual 'Connection timed out', expected 'Connection timed out'
mq_receive
mq_timedreceive
wake up
mq_timedreceive: actual 'Connection timed out', expected 'Connection 
timed out'
clock_nanosleep
wake up
clock_nanosleep: actual 'Success', expected 'Success'

-- 
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  parent reply	other threads:[~2022-08-01  7:52 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-02  8:43 Sebastian Huber
2022-08-01  7:10 ` Joël Krähemann
2022-08-01  7:41   ` Joël Krähemann
2022-08-03 23:44   ` Sebastian Huber [this message]
2022-08-01  8:28     ` Joël Krähemann
2022-08-01  8:36       ` Sebastian Huber
2022-08-01  9:51         ` Joël Krähemann
2022-08-01 11:51           ` Joël Krähemann
2022-08-01 11:59             ` Joël Krähemann
2022-08-01 14:44               ` Joël Krähemann
2022-08-01 16:31             ` Sebastian Huber
2022-08-01 20:11               ` Joël Krähemann
2022-08-01 22:05                 ` Joël Krähemann

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