Re: Language feature selection

From	Don Y <blockedofcourse@foo.invalid>
Newsgroups	comp.arch.embedded
Subject	Re: Language feature selection
Date	2017-03-18 03:55 -0700
Organization	A noiseless patient Spider
Message-ID	<oaj3hb$ml2$1@dont-email.me> (permalink)
References	(10 earlier) <oa4oon$s0r$1@dont-email.me> <inljcc1n15d869k10l8i0ve9rfhbgp8run@4ax.com> <oafa48$kmn$1@dont-email.me> <bp3pccl1jtv66f4jfb036lv1cnkdn8quuq@4ax.com> <oaijmu$8f3$1@dont-email.me>

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On 3/17/2017 11:25 PM, Don Y wrote:

>> When the time comes to replicate the process's memory on another host,
>> only mapped physical space needs to be copied - not the entire virtual
>> address space reservation.
>
> Again, that assumes the (active/mapped) memory represents the entire
> "state" of the process and all of its dependencies.  (what about any
> network connections -- managed by the OS -- that may be active at the
> time?  the contents of any NIC buffers AS the process is in transit?
> file handles, my "object handles", etc.)

ProcessA:
     ThreadA1();
     ThreadA2() {
        ...
        // some sort of synchronization primitive with ThreadA3
        send_resource(my_potato, ProcessC)
        ...
        exit
     }
     ThreadA3() {
        ...
        my_potato = create_potato(size, flavor, &my_masher)
        ...
        exit
     };
     my_masher();

ProcessB:
     ThreadB1();
     ThreadB2();
     create_potato();
     default_masher();

ProcessC:
     ThreadC1();
     ThreadC2() {
        ...
        delete(received_potato)
        ...
     };

Normally, when all ThreadAi have exited, ProcessA would die and
its resources be reclaimed.

If create_potato() was hosted by ProcessA *and* the send_resource()
targeted ProcessA, then everything is self-contained; when everything
dies/exits, the potato can be deleted (because nothing outside the
ProcessA references it).  There is no visibility outside of that
process container for any of the objects contained within.

If we assume ProcessB has the "potato server" (i.e., if create_potato()
is an aspect of that SERVICE), then ProcessB must remain active for
the potato to be created *and*, once created, must continue to remain
active to service requests made of the "my_potato" object (because
my_potato is just a handle to the potato abstraction reified by
the potato server in ProcessB).  Note that this dependency is extended
to ProcessC once the potato resource has been transfered to ProcessC
by ThreadA2!

In addition to ProcessB remaining active while the outstanding reference
to the potato exists, ProcessA must remain active even after the potato
has been passed to ProcessC -- because of the dependency on "my_masher"
that is bound to the instantiation of the potato as it occurred in
ThreadA3!

[Maybe "my_masher" leaves a certain amount of chunkiness in the potatoes
after the mash method is applied -- by the potato server -- while the
default_masher ensures a more uniform, pasty consistency]

<something> has to track these dependencies.  We (I) don't trust the
developer to write (bug-free) code to "manually" do that -- not for EVERY
such "distributed object".  The compiler can't do it because it
doesn't know where the objects will reside.

By assigning capabilities/handles to each of these objects (a masher
is an object just like a potato is an object and a potato server is an
object and a process is an object and a thread is an object and a...),
the OS can keep track of:
- where each object "resides"
- where each reference to a particular object resides
- how many outstanding references to an object exist

So, when ThreadC2 finally deletes the potato (which *it* knows by the
name "received_potato"), the resources bound up in that potato instance
can be freed (from the "potato server" in ProcessB as well as the
"masher service" in ProcessA -- in addition to the handle in ProcessC!

If ProcessA (and/or ProcessB and/or ProcessC) now has no remaining
active resources (e.g., all threads have exited), then *they* can
be reclaimed along with their resources.

If the system opts to migrate ProcessA (containing my_masher()) to
another node *while* that potato is still active, then the resources
previously used for that *instance* of ProcessA (on NodeX) can be
freed -- but, an outstanding claim levied against the resources that
ProcessA (now known as ProcessQ) *still* requires while being hosted
on NodeY.

So, if received_potato->mash() is invoked by a thread in ProcessC
*after* it has accepted the transfer of "received_potato" but before
it has been deleted, the potato server in ProcessB will receive that
RMI and, as part of its *mechanism*, will invoke the masher member
that will be implemented by my_masher() in ProcessA (if ProcessA
hasn't yet migrated) *or* by ProcessQ (if ProcessA *has* already
migrated).

There's no clear cut concept of the potato's "ownership".  The
process that has "rights" to it changes (from A to C in this example).
The process that *implements* it morphs (from B assisted by A to
B assisted by Q).  A single object has tied up resources in three
different process containers.

For a concrete EXAMPLE of similar objects, imagine the potato is a
video_clip and there are "compress", "store", "display", "motion_detect"
and "commercial_detect" methods available.  Further, that the user
can *bind* (returning to the concept of closures) particular functions
and criteria to each of these.

So, maybe an "MP4" functionality is bound to a Compressor object and
that compressor object bound to the clip.  I.e., my_clip->compress()
effectively causes an MP4 version of the clip to be created.  The
MP4 functionality is provided by an MP4 *module* in ProcessD running
on nodeI (because nodeI has the resources available to expedite that
processing).

Meanwhile, a Region object (polygon) may be created and bound to the
motion_detector object that is created to determine which portion(s)
of my_clip to examine for signs of motion in the motion_detect method.

And, criteria for a "commercial_detector" bound to a detector that
is eventually bound to that video_clip and subsequently invoked
by the my_clip->elide_commercials() method running in ProcessL on
nodeW.

Why force every compression algorithm to be implemented in a single
"Compressors" module?  Or, be supported by set of resources defined
by the UNION of their requirements?  Why force all commercial
detection algorithms to co-reside with these compressors?  And, all
to reside in a "video_clip" module?  Or, execute on the same hardware
node, concurrently?

Why force all of these bindings to persist if the client(s) that
*had* permission to invoke them have terminated?  (i.e., if there
is only one outstanding capability for the compress method and
the process holding that capability terminates, then NOTHING can
invoke that compressor!  So, the *binding* can be freed in my_clip.
And, in return, the service that implements it (in ProcessD) can be
allowed to die an orderly death (if no other outstanding references).

Put *all* of this in a single process and the OS has no way to
know when certain resources are no longer required -- because
the containing object (the process) can't inform the OS of "things"
of which the OS has no knowledge (this is A Good Thing because it
means the OS doesn't HAVE TO know about everything!)

Thread

Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-05 16:03 -0700
  Re: Language feature selection Wouter van Ooijen <wouter@voti.nl> - 2017-03-06 08:04 +0100
    Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-07 10:31 -0700
      Re: Language feature selection Wouter van Ooijen <wouter@voti.nl> - 2017-03-07 23:29 +0100
        Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-08 02:49 -0700
          Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-08 13:18 +0100
            Re: Language feature selection Wouter van Ooijen <wouter@voti.nl> - 2017-03-08 16:58 +0100
            Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-08 10:35 -0700
              Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-08 22:07 +0100
  Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-06 08:40 +0100
    Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-06 10:31 +0100
    Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-06 08:47 -0700
      Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-06 21:33 +0100
        Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-06 13:44 -0700
          Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-07 12:24 +0100
            Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-07 09:34 -0700
              Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-08 10:14 +0100
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-08 10:37 -0700
                Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-08 22:09 +0100
    Re: Language feature selection Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-06 22:50 +0200
      Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-07 12:31 +0100
    Re: Language feature selection rickman <gnuarm@gmail.com> - 2017-03-07 14:45 -0500
  Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-06 08:39 +0000
    Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-06 08:39 -0700
      Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-06 17:27 +0000
        Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-06 13:30 -0700
  Re: Language feature selection Dimiter_Popoff <dp@tgi-sci.com> - 2017-03-06 11:11 +0200
    Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-06 13:38 -0700
      Re: Language feature selection Dimiter_Popoff <dp@tgi-sci.com> - 2017-03-07 12:18 +0200
        Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-07 10:28 -0700
  Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-06 13:33 -0500
    Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-06 13:36 -0700
      Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-06 22:15 -0500
        Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-06 22:22 -0500
        Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-07 00:27 -0700
          Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-08 12:20 -0500
            Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-08 11:23 -0700
              Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-10 13:43 -0500
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-10 16:49 -0700
                Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-11 04:17 -0500
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-11 12:33 -0700
                Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-12 18:08 -0400
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-12 17:25 -0700
                Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-15 21:05 -0400
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-16 17:23 -0700
                Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-17 23:59 -0400
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-17 23:25 -0700
                Re: Language feature selection Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-18 12:05 +0200
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-18 04:04 -0700
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-18 04:39 -0700
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-18 03:55 -0700
                Re: Language feature selection upsidedown@downunder.com - 2017-03-18 16:00 +0200
                Re: Language feature selection Les Cargill <lcargill99@comcast.com> - 2017-03-11 16:35 -0600
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-11 15:39 -0700
  Re: Language feature selection Grant Edwards <invalid@invalid.invalid> - 2017-03-06 18:59 +0000
    Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-06 12:36 -0700
  Re: Language feature selection Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2017-03-07 19:02 +0000
    Re: Language feature selection Grant Edwards <invalid@invalid.invalid> - 2017-03-07 19:18 +0000
      Re: Language feature selection Grant Edwards <invalid@invalid.invalid> - 2017-03-07 19:19 +0000
    Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-07 12:38 -0700
  Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-07 22:10 -0600
    Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-07 20:35 -0800
      Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-08 20:43 -0600
    Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-07 23:48 -0700
      Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-08 20:48 -0600
        Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-08 21:15 -0700
        Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-09 01:33 -0800
        Re: Language feature selection Grant Edwards <invalid@invalid.invalid> - 2017-03-09 14:47 +0000
          Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-09 16:40 +0100
            Re: Language feature selection Grant Edwards <invalid@invalid.invalid> - 2017-03-09 16:15 +0000
              Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-09 22:04 +0100
                Re: Language feature selection John Devereux <john@devereux.me.uk> - 2017-03-10 07:46 +0000
                Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-10 13:21 +0100
              Re: Language feature selection Les Cargill <lcargill99@comcast.com> - 2017-03-09 17:57 -0600
                Re: Language feature selection Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-10 11:16 +0200
        Re: Language feature selection Jacob Sparre Andersen <jacob@jacob-sparre.dk> - 2017-03-10 20:39 +0100
          Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-10 13:32 -0800
            Re: Language feature selection Niklas Holsti <niklas.holsti@tidorum.invalid> - 2017-03-11 14:58 +0200
              Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-13 13:02 +0100
    Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-08 10:46 +0100
      Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-08 20:33 -0600
        Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-09 11:08 +0100
          Re: Language feature selection Britt <britt.snodgrass@gmail.com> - 2017-03-09 07:04 -0800
            Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-09 16:36 +0100
              Re: Language feature selection Grant Edwards <invalid@invalid.invalid> - 2017-03-09 16:11 +0000
              Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-09 12:06 -0600
              Re: Language feature selection Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2017-03-09 19:26 +0100
                Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-09 22:08 +0100
            Re: Language feature selection Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2017-03-09 19:04 +0000
              Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-09 15:34 -0700
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-09 15:40 -0700
                Re: Language feature selection Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2017-03-10 14:19 +0000
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-10 11:10 -0700
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-10 11:49 -0700
        Re: Language feature selection Les Cargill <lcargill99@comcast.com> - 2017-03-09 18:00 -0600
    Re: Language feature selection Les Cargill <lcargill99@comcast.com> - 2017-03-09 17:54 -0600
      Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-09 18:54 -0600
        Re: Language feature selection Grant Edwards <invalid@invalid.invalid> - 2017-03-10 04:07 +0000
          Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-10 08:07 -0600
        Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-10 13:59 +0100
      Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-10 08:17 +0000
        Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-10 11:24 -0700
          Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-10 19:09 +0000
            Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-10 12:33 -0700
              Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-10 23:25 +0000
                Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-10 20:22 -0500
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-11 01:32 +0000
                Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-10 18:16 -0800
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-11 09:59 +0000
                Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-11 02:23 -0800
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-11 11:13 +0000
                Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-11 14:28 -0500
                Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-11 17:20 -0500
                Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-12 16:26 -0400
                Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-12 21:46 +0100
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-12 23:15 +0000
                Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-13 14:14 -0400
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-13 18:48 +0000
                Re: Language feature selection "Brian G. Lucas" <bagel99@gmail.com> - 2017-03-13 15:17 -0500
                Re: Language feature selection Niklas Holsti <niklas.holsti@tidorum.invalid> - 2017-03-13 23:17 +0200
                Re: Language feature selection "Brian G. Lucas" <bagel99@gmail.com> - 2017-03-13 17:27 -0500
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-13 17:10 -0700
                Re: Language feature selection Niklas Holsti <niklas.holsti@tidorum.invalid> - 2017-03-14 10:11 +0200
                Re: Language feature selection "Brian G. Lucas" <bagel99@gmail.com> - 2017-03-14 12:23 -0500
                Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-14 13:27 +0100
                Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-14 13:30 -0400
                Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-14 22:03 +0100
                Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-14 17:24 -0400
                Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-11 07:19 -0600
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-11 19:43 +0000
                Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-12 09:28 -0600
                Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-12 15:15 -0400
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-12 19:38 +0000
                Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-10 18:08 -0800
                Re: Language feature selection George Neuner <gneuner2@comcast.net> - 2017-03-11 04:22 -0500
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-11 10:02 +0000
                Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-11 02:22 -0800
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-11 11:07 +0000
          Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-10 14:30 -0600
            Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-10 13:37 -0800
              Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-10 16:30 -0600
                Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-10 18:14 -0800
                Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-11 07:46 -0600
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-11 12:53 -0700
                Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-12 09:45 -0600
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-12 11:56 -0700
                Re: Language feature selection Dimiter_Popoff <dp@tgi-sci.com> - 2017-03-12 21:05 +0200
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-12 14:40 -0700
                Re: Language feature selection Dimiter_Popoff <dp@tgi-sci.com> - 2017-03-13 00:36 +0200
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-12 17:00 -0700
                Re: Language feature selection Robert Wessel <robertwessel2@yahoo.com> - 2017-03-13 16:50 -0500
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-13 17:08 -0700
                Re: Language feature selection Robert Wessel <robertwessel2@yahoo.com> - 2017-03-13 20:51 -0500
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-13 20:31 -0700
                Re: Language feature selection Robert Wessel <robertwessel2@yahoo.com> - 2017-03-14 21:45 -0500
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-14 21:16 -0700
                Re: Language feature selection Les Cargill <lcargill99@comcast.com> - 2017-03-11 16:40 -0600
            Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-10 15:10 -0700
              Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-10 16:42 -0600
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-10 17:02 -0700
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-11 00:46 +0000
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-11 13:05 -0700
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-11 21:58 +0000
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-11 15:19 -0700
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-11 23:27 +0000
                Re: Language feature selection Walter Banks <walter@bytecraft.com> - 2017-03-10 20:14 -0600
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-11 12:16 -0700
        Re: Language feature selection Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2017-03-10 20:40 +0100
          Re: Language feature selection Wouter van Ooijen <wouter@voti.nl> - 2017-03-10 22:28 +0100
  Re: Language feature selection Jacob Sparre Andersen <jacob@jacob-sparre.dk> - 2017-03-10 20:03 +0100
    Re: Language feature selection Grant Edwards <invalid@invalid.invalid> - 2017-03-10 19:48 +0000
      Re: Language feature selection Jacob Sparre Andersen <jacob@jacob-sparre.dk> - 2017-03-13 21:25 +0100
    Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-10 13:03 -0700
      Re: Language feature selection Jacob Sparre Andersen <jacob@jacob-sparre.dk> - 2017-03-13 21:40 +0100
        Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-13 14:35 -0700
          Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-14 01:06 +0000
            Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-13 19:23 -0700
              Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-14 08:48 +0000
                Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-14 02:14 -0700
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-14 09:33 +0000
                Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-14 09:21 -0700
                Re: Language feature selection Les Cargill <lcargill99@comcast.com> - 2017-03-17 06:01 -0500
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-17 11:39 +0000
                Re: Language feature selection Les Cargill <lcargill99@comcast.com> - 2017-03-17 07:16 -0500
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-17 13:49 +0000
                Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-17 11:03 -0700
                Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-17 19:21 +0100
                Re: Language feature selection Paul Rubin <no.email@nospam.invalid> - 2017-03-17 11:34 -0700
                Re: Language feature selection David Brown <david.brown@hesbynett.no> - 2017-03-17 20:26 +0100
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-17 20:07 +0000
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-17 20:29 +0000
                Re: Language feature selection Les Cargill <lcargill99@comcast.com> - 2017-03-17 19:19 -0500
                Re: Language feature selection Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-18 08:18 +0000
            Re: Language feature selection Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2017-03-14 21:20 +0100
  Re: Language feature selection jim.brakefield@ieee.org - 2017-03-10 18:46 -0800
    Re: Language feature selection Niklas Holsti <niklas.holsti@tidorum.invalid> - 2017-03-11 15:41 +0200
      Re: Language feature selection jim.brakefield@ieee.org - 2017-03-11 14:20 -0800
        Re: Language feature selection upsidedown@downunder.com - 2017-03-12 00:54 +0200
          Re: Language feature selection jim.brakefield@ieee.org - 2017-03-12 18:08 -0700
            Re: Language feature selection upsidedown@downunder.com - 2017-03-13 23:36 +0200
          Re: Language feature selection Robert Wessel <robertwessel2@yahoo.com> - 2017-03-13 17:03 -0500
    Re: Language feature selection Don Y <blockedofcourse@foo.invalid> - 2017-03-11 14:21 -0700

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