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Groups > comp.lang.c > #157415

Re: A defer mechanism for C

From Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups comp.lang.c
Subject Re: A defer mechanism for C
Date 2020-12-18 19:40 +0000
Organization A noiseless patient Spider
Message-ID <87tusiykap.fsf@bsb.me.uk> (permalink)
References (5 earlier) <rrfprg$bet$1@dont-email.me> <87czz81b4q.fsf@bsb.me.uk> <rrge36$74v$1@dont-email.me> <877dpg142r.fsf@bsb.me.uk> <rri122$889$1@dont-email.me>

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David Brown <david.brown@hesbynett.no> writes:

> On 17/12/2020 23:05, Ben Bacarisse wrote:
>> David Brown <david.brown@hesbynett.no> writes:
>> 
>>> On 17/12/2020 20:32, Ben Bacarisse wrote:
>>>> David Brown <david.brown@hesbynett.no> writes:
>>>>
>>>>> On 16/12/2020 17:06, Ben Bacarisse wrote:
>>>>>> David Brown <david.brown@hesbynett.no> writes:
>> <cut>
>>>>>>> It looks roughly like gcc's "cleanup" attribute, in that it lets you
>>>>>>> execute code when a variable goes out of scope.
>>>>>>
>>>>>> But not quite.  In the example given, the mutex mtx is not declared in
>>>>>> the block so it's unlockingcan't be linked to the scope of mtx.  And in
>>>>>> general you can't unlock a mutex at the end of it's lifetime, only after
>>>>>> a successful lock by the same thread.
>>>>>
>>>>> There are no doubt other differences.  (I don't know the ordering of gcc
>>>>> cleanup functions when multiple variables go out of scope at the same
>>>>> time.)  And yes, extra effort is needed for a gcc cleanup function to
>>>>> handle the details around freeing the mutex.
>>>>
>>>> Is it just details?  Unlocking a mutex is not an action associated with
>>>> the object's lifetime so gcc's cleanup mechanism seems to be the wrong
>>>> thing.
>>>
>>> In C++, a perfectly good way to handle mutexes is with a "lock" class -
>>> constructing the class object locks the mutex, and destructing it
>>> unlocks it.  gcc's cleanup is the closest you get to a destructor in C
>>> (with gcc extensions).  Note that the cleanup is associated with the
>>> lifetime of a lock object on the mutex, not the mutex itself.
>> 
>> Sure, but now I'm not sure what your point is here.  Are you suggesting
>> a gcc-C solution using a lock struct?  I don't think that a bad way to
>> do it, but it much more involved that the "defer" example that was
>> posted.
>> 
>>> (I'm not suggesting that using a cleanup function, or a defer, is
>>> necessarily a good way to use a mutex in C.)
>> 
>> My point is the gcc's "cleanup" does not seem to be quite up to the task
>> in the way that the proposed "defer" is.  You appeared to be saying that
>> it was only some details that separated them, but that might be down to
>> what constitutes a detail for you.
>
> I'm saying that gcc's cleanup can be used to implement the same things
> that are shown in the "defer" example.  Yes, I agree that using it for a
> mutex is a more complicated, while using it for "free" is quite
> straightforward.  It looks like the "defer" idea has all sorts of
> additional features not shown in this example, but for this kind of
> common case I think you can use "cleanup" to get code that has the same
> kind of source structure as the "defer" example.

Agreed.  It can be done.  It's considerably more complicated*, but it
can be done.

* You need a new object with the right lifetime which must record the
success or otherwise of the mtx_lock, and should have a pointer to the
mutex to be unlocked.  In addition, you need to define a function with
the sole purpose doing the mtx_unlock.

-- 
Ben.

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Thread

A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-15 13:57 -0800
  Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-16 02:11 +0300
    Re: A defer mechanism for C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-16 01:05 +0000
      Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-16 10:48 +0100
        Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-16 04:16 -0800
          Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-16 17:04 +0100
        Re: A defer mechanism for C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-16 16:06 +0000
          Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-17 15:26 +0100
            Re: A defer mechanism for C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-17 19:32 +0000
              Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-17 21:12 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-17 13:10 -0800
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-18 11:35 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-18 06:05 -0800
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-18 15:28 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-18 08:49 -0800
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-18 18:24 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-18 10:31 -0800
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-19 16:53 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 19:33 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-18 11:06 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 20:45 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-18 11:55 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 21:08 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 21:09 +0100
                Re: A defer mechanism for C Richard Damon <Richard@Damon-Family.org> - 2020-12-18 15:39 -0500
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 21:55 +0100
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-19 17:05 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 17:12 +0100
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-19 18:41 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-19 10:13 -0800
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-20 13:28 +0100
                Re: A defer mechanism for C Richard Damon <Richard@Damon-Family.org> - 2020-12-19 11:35 -0500
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-19 18:45 +0100
                Re: A defer mechanism for C Richard Damon <Richard@Damon-Family.org> - 2020-12-19 13:26 -0500
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-19 11:31 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 20:41 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-19 19:57 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 21:05 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-19 20:26 +0000
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-20 13:59 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-20 15:23 +0000
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-20 17:48 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-20 17:21 +0000
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-20 18:48 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-20 20:13 +0000
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-20 17:37 +0000
                Re: A defer mechanism for C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 16:26 -0800
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-25 00:55 +0000
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-19 12:10 -0800
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-20 13:56 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-20 14:01 +0100
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-20 16:32 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-20 07:42 -0800
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-20 16:07 +0000
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-20 18:38 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-20 17:25 +0100
                Re: A defer mechanism for C Christian Hanné <the.hanne@gmail.com> - 2020-12-20 17:46 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-20 09:07 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-20 18:43 +0100
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-20 18:45 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-20 10:11 -0800
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-20 14:58 -0800
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-21 08:58 +0100
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-20 18:41 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-20 18:45 +0100
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-20 20:25 +0100
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-20 22:34 +0300
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-20 20:52 +0100
                Re: A defer mechanism for C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-20 12:37 -0800
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-21 08:42 +0100
                Re: A defer mechanism for C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-21 09:19 -0500
                Re: A defer mechanism for C Richard Damon <Richard@Damon-Family.org> - 2020-12-21 10:18 -0500
                Re: A defer mechanism for C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-21 11:06 -0500
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-21 17:31 +0100
                Re: A defer mechanism for C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-21 13:09 -0500
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 17:13 +0100
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-21 17:31 +0100
                Re: A defer mechanism for C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-21 13:18 -0500
                Re: A defer mechanism for C Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2020-12-23 17:26 -0700
                Re: A defer mechanism for C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-24 00:47 -0500
                Re: A defer mechanism for C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-24 00:59 -0500
                Re: A defer mechanism for C Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2020-12-23 17:25 -0700
                Re: A defer mechanism for C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-21 14:23 -0800
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-22 09:58 +0100
                Re: A defer mechanism for C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-27 04:57 -0800
                Re: A defer mechanism for C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-27 04:19 -0800
                Re: A defer mechanism for C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-27 11:24 -0800
                Re: A defer mechanism for C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-28 22:45 -0800
                Re: A defer mechanism for C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-29 00:33 -0800
                Re: A defer mechanism for C Richard Damon <Richard@Damon-Family.org> - 2020-12-29 11:31 -0500
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-29 17:24 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-29 18:43 +0100
                Re: A defer mechanism for C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-29 11:32 -0800
                Re: A defer mechanism for C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-31 03:34 -0800
                Re: A defer mechanism for C Richard Damon <Richard@Damon-Family.org> - 2020-12-29 21:06 -0500
                Re: A defer mechanism for C "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-12-29 20:40 -0800
                Re: A defer mechanism for C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-31 02:56 -0800
                Re: A defer mechanism for C Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2020-12-23 17:22 -0700
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-24 02:13 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-24 06:49 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-24 03:16 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-24 13:38 +0100
                Re: A defer mechanism for C "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-12-24 14:37 -0800
                Re: A defer mechanism for C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-25 11:39 -0500
                Re: A defer mechanism for C "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-12-26 22:34 -0800
                Re: A defer mechanism for C "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-12-26 22:48 -0800
                Re: A defer mechanism for C Richard Damon <Richard@Damon-Family.org> - 2020-12-27 08:51 -0500
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-24 22:50 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-25 09:52 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-19 09:18 -0800
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-19 09:32 -0800
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-19 18:55 +0100
                Re: A defer mechanism for C "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-12-24 14:16 -0800
                Re: A defer mechanism for C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-17 22:05 +0000
                Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-18 11:42 +0100
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-18 05:53 -0800
                Re: A defer mechanism for C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-18 19:40 +0000
      Re: A defer mechanism for C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-27 05:19 -0800
  Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-16 11:01 +0100
    Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-16 03:45 -0800
      Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-16 13:25 +0100
        Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-16 06:26 -0800
          Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-16 15:40 +0100
            Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-16 07:05 -0800
              Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-16 16:13 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-16 16:21 +0100
      Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-16 17:06 +0100
        Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-16 08:57 -0800
          Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-16 19:43 +0100
  Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-16 12:05 +0000
    Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-16 14:26 +0100
    Re: A defer mechanism for C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-16 15:57 +0000
      Re: A defer mechanism for C David Brown <david.brown@hesbynett.no> - 2020-12-16 19:49 +0100
        Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-16 11:33 -0800
          Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-16 13:05 -0800
          Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-17 01:52 +0300
            Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-17 10:59 -0800
              Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-17 20:47 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-17 19:58 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-17 21:56 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-18 18:03 +0000
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-17 12:30 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-17 22:16 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-17 22:39 +0100
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-17 13:44 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-17 22:51 +0100
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-18 01:33 +0300
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 06:54 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-18 13:28 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 15:14 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 15:16 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-18 16:19 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 17:26 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-18 17:07 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 18:18 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-18 18:34 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 20:40 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-18 21:16 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 22:24 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-18 21:50 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 23:25 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-19 01:01 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 11:47 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-19 02:45 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 11:48 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-19 12:13 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 13:33 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-19 20:24 +0000
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 17:28 +0300
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 16:05 +0100
                Re: A defer mechanism for C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 21:55 -0800
                Re: A defer mechanism for C Michael S <already5chosen@yahoo.com> - 2020-12-25 05:26 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-25 14:28 +0100
                Re: A defer mechanism for C Michael S <already5chosen@yahoo.com> - 2020-12-25 05:38 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-25 14:51 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-25 20:00 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-26 12:19 +0100
                Re: A defer mechanism for C Öö Tiib <ootiib@hot.ee> - 2020-12-26 19:10 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-27 05:28 +0100
                Re: A defer mechanism for C Michael S <already5chosen@yahoo.com> - 2020-12-25 05:42 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-25 14:52 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-26 02:29 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-26 12:11 +0100
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-26 09:33 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-26 18:50 +0100
                Re: A defer mechanism for C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-26 07:40 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 15:36 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 17:49 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 15:39 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-18 16:25 +0000
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 01:55 +0300
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 23:58 +0100
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 17:16 +0300
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 16:05 +0100
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 18:33 +0300
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 16:55 +0100
                Re: A defer mechanism for C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-18 19:10 +0000
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-18 16:47 +0300
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 15:22 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 07:09 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 07:25 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 08:02 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-17 22:55 +0100
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-17 21:58 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-17 23:05 +0100
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-18 01:40 +0300
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-17 22:59 +0000
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-18 01:10 +0300
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-17 22:46 +0000
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-18 01:46 +0300
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-18 01:00 +0300
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-18 10:59 -0800
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-18 11:12 -0800
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 02:18 +0300
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-18 16:25 -0800
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 19:24 +0300
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-19 09:07 -0800
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 22:36 +0300
                Re: A defer mechanism for C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-19 15:54 -0500
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-20 01:21 +0300
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-20 15:22 -0800
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-21 11:53 +0300
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-21 11:55 +0300
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-21 12:07 +0300
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-21 03:38 -0800
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-19 01:40 +0000
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-19 04:00 -0800
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 15:02 +0300
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-19 04:22 -0800
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 16:43 +0300
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-19 12:34 +0000
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 17:11 +0300
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-19 17:22 +0000
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 15:08 +0300
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 15:26 +0300
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-19 04:36 -0800
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 16:54 +0300
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 22:12 +0300
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-21 15:13 +0300
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-21 12:45 +0000
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-21 16:25 +0300
                Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-21 13:38 +0000
                Re: A defer mechanism for C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-21 09:26 -0500
        Re: A defer mechanism for C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-16 20:30 +0000
          Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-16 21:41 +0100
            Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-16 21:02 +0000
              Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-17 07:24 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-18 18:14 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 19:25 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-18 18:38 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-18 20:44 +0100
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 02:07 +0300
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 00:51 +0100
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 16:51 +0300
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-19 06:15 -0800
                Re: A defer mechanism for C Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-19 06:25 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 15:58 +0100
                Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-19 18:43 +0300
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 16:56 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 15:55 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 15:52 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-19 00:40 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 11:46 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-19 20:22 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-19 21:31 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-19 22:27 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-20 09:36 +0100
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-21 21:02 +0000
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 22:24 +0100
            Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-16 13:07 -0800
              Re: A defer mechanism for C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-16 18:35 -0800
                Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-17 04:08 +0000
            Re: A defer mechanism for C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-16 23:13 +0000
              Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-17 07:24 +0100
  Re: A defer mechanism for C Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-16 20:29 +0000
  Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-17 01:26 +0300
  Re: A defer mechanism for C fir <profesor.fir@gmail.com> - 2020-12-21 05:02 -0800
    Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 15:03 +0100
      Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-21 06:36 -0800
        Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 16:51 +0100
          Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-21 08:17 -0800
            Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 17:22 +0100
              Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-21 08:36 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 17:40 +0100
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-21 08:46 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 18:04 +0100
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-21 10:57 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 20:10 +0100
                Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-21 11:39 -0800
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 20:48 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 21:08 +0100
                Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 21:34 +0100
        Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-21 19:15 +0300
          Re: A defer mechanism for C Thiago Adams <thiago.adams@gmail.com> - 2020-12-21 08:26 -0800
            Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-21 19:45 +0300
          Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 17:31 +0100
            Re: A defer mechanism for C Anton Shepelev <anton.txt@gmail.com> - 2020-12-21 20:15 +0300
              Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 18:28 +0100
            Re: A defer mechanism for C Bart <bc@freeuk.com> - 2020-12-21 20:49 +0000
              Re: A defer mechanism for C Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-21 22:17 +0100

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