From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | ohp(at)pyrenet(dot)fr |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Unixware Patch (Was: Re: Beta2 Tag'd and Bundled ...) |
Date: | 2003-09-03 19:36:53 |
Message-ID: | 200309031936.h83Jar417879@candle.pha.pa.us |
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Thread: | |
Lists: | pgsql-hackers |
ohp(at)pyrenet(dot)fr wrote:
> > Olivier PRENANT wrote:
> > > >> It's ok to assume thread-safety, as the SCO developer (Kean Johnston)
> > > >> asked the threads guys, and he said that the libc stuff is
> > > >> thread-safe so they don't have to have 2 different versions in libc.
> > > >
> > > If any one can write a program that can prove anything (I can't), I'm
> > > willing to test it here on a bi-pro (bi PIII and bi-XEON with JT
> > > enabled) running uw713.
> > > Maybe it will end the discussion and make a point in either way. So that
> > > we (you?) can move on with the other unixware patches.
> >
> > You don't need a SMP machine to test threads. You just need one thread
> > to do the function call, then another to do the function call and see if
> > the two pointers are different. They calls don't have to happen at the
> > same time. Ideally you could make call in the two threads with
> > different arguments, then after both calls are completed, test that the
> > two static areas have the proper _different_ values.
> >
> >
> Ok, I don't know much about threads; would you write a simple program for
> us to test?
OK, done, and attached. It is also now in CVS as
src/tools/test_thread_funcs.c.
In hindsight, I should have done this long ago. However, it only tests
the thread-safety of functions. It does not completely test your threading
capability.
I would like every operating system that supports thread-safety to run
this program and report back the results.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
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