UnixWare/Threads stuff [repost from March] - Mailing list pgsql-hackers

This is a re-post, and still the state of things.

There were a few posts after this because of my STRENUOUS objection below.

I still think we should enable threads somehow on this platform.


--On Monday, March 22, 2004 11:14:59 -0600 Larry Rosenman <ler@lerctr.org>
wrote:

>
>
> --On Monday, March 22, 2004 09:52:54 -0500 Bruce Momjian
> <pgman@candle.pha.pa.us> wrote:
>
>> Bruce Momjian wrote:
>>> Larry Rosenman wrote:
>>> >  The a.out (not any library) should be linked with -Kpthread (not
>>> > -lpthread).
>>> > This will force libthread to be linked in the right order relative to
>>> > libc, libC, networking libraries, etc.
>>> >
>>> > In other words, the entire application either is or is not linked with
>>> > threads; it's not a property of an individual library.
>>> >
>>> >
>>> > SO, IF we are using the threads flags, we need to use them on ALL
>>> > libpq-using programs, ours or the users.
>>>
>>> Seems we have a few options for making threaded libpq on Unixware:
>>>
>>>     o  remove thread-safe SIGPIPE code, which calls thread library
>>>
>>>     o  create a threaded and non-threaded libpq library
>>>
>>>     o  add a libpq function that enables threading, and do dynamic
>>> linking of thread calls based on that function
>>>
>>>     o  Add thread flags to all builds on that platform, including
>>> the backend
>>>
>>>     o  Add the ability to specify compile/link flags for everything
>>> but the backend
>>>
>>> As I remember, libcrypt used to be required by all libpq builds on
>>> various platforms.   This seems to be a similar case.
>>>
>>> I think the last option might be the best.  Somehow create different
>>> cppflags/libs for the backend and non-backend programs.
>>
>> One other option is to disable threads on this platform for 7.5 unless
>> we find another platforms that need this to use threads.  That is the
>> direction I will take for the moment.  If someone needs a threaded libpq
>> on this platform, then can enable threads, compile libpq alone, and
>> rename it with a thread extension.
> This will be a REGRESSION from 7.4.  I object STRENUOUSLY to this tack.
>
> I want to see threads enabled for this platform since it is a threaded
> kernel.
>
> What do we have to do to get there?   What code do I need to write for
> y'all?
>
> LER
>
>>
>> --
>>   Bruce Momjian                        |  http://candle.pha.pa.us
>>   pgman@candle.pha.pa.us               |  (610) 359-1001
>>   +  If your life is a hard drive,     |  13 Roberts Road
>>   +  Christ can be your backup.        |  Newtown Square, Pennsylvania
>> 19073



--
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 972-414-9812                 E-Mail: ler@lerctr.org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749