RE: pthreads on Win2k

RE: pthreads on Win2k

[Steve Croall]

I have run a pthreaded application successfully on win2k as well as windows
NT.  The application was originally developed in NT.

Steve.

-----Original Message-----
From: John Funnell [ mailto:jfunnell@projectmayo.com ]
Sent: 22 March 2001 19:20
To: pthreads-win32@sourceware.cygnus.com
Subject: pthreads on Win2k


Has anyone successfully run pthread-win32 on win2k?  I have an application
(nothing too smart, two threads, a mutex) which runs fine on a dual NT box
but not on a single processor Win2k machine.

It's most likely I'm doing something silly but it would be encouraging to
hear some else's success story on 2k.

Also is there a list of know bugs/FAQs for this project?

Thanks for a great library,

John Funnell,
Project Mayo

Re: pthreads on Win2k

[Stephen R. Johns]

Probably not related, but just in case...

I've been trying to port a linux program to pthreadw32, and found
a mutex issue/difference.

Linux allows threads other than the locking thread to unlock a mutex,
but pthreads does not.  So if you are trying to do that, your
unlocks never work.


Steve Croall wrote:

> I have run a pthreaded application successfully on win2k as well as windows
> NT.  The application was originally developed in NT.
> 
> Steve.
> 
> -----Original Message-----
> From: John Funnell [ mailto:jfunnell@projectmayo.com ]
> Sent: 22 March 2001 19:20
> To: pthreads-win32@sourceware.cygnus.com
> Subject: pthreads on Win2k
> 
> 
> Has anyone successfully run pthread-win32 on win2k?  I have an application
> (nothing too smart, two threads, a mutex) which runs fine on a dual NT box
> but not on a single processor Win2k machine.
> 
> It's most likely I'm doing something silly but it would be encouraging to
> hear some else's success story on 2k.
> 
> Also is there a list of know bugs/FAQs for this project?
> 
> Thanks for a great library,
> 
> John Funnell,
> Project Mayo

Re: pthreads on Win2k

[Scott McCaskill]

On the face of it, this seems like a bad idea--why would you want to do
such a thing?  This isn't derision, I'm just curious.

On the original subject, I've also been using pthreads on win2k for ~8
months now and haven't had any problems.  I've only used it on single
processor machines.

On Fri, 23 Mar 2001, Stephen R. Johns wrote:

> Probably not related, but just in case...
> 
> I've been trying to port a linux program to pthreadw32, and found
> a mutex issue/difference.
> 
> Linux allows threads other than the locking thread to unlock a mutex,
> but pthreads does not.  So if you are trying to do that, your
> unlocks never work.
> 

Re: pthreads on Win2k

[Stephen R. Johns]

As I said, I am porting this, and I have been debating this
myself.  It certainly does not seem like a very good idea.
Obviously, the Linux implementers think there is some use.
I can't think of any scenario where this would not be risky
and problematic, but who knows, maybe there is special need
in device drivers, or some equally odd thing that I don't
ever work with.  I will say, even if you can think of a special
case or two where this would be a legit idea, the stuff I am
having to deal with is NOT in any of those categories.  I've
never heard of or seen anything like it before.


Scott McCaskill wrote:

> On the face of it, this seems like a bad idea--why would you want to do
> such a thing?  This isn't derision, I'm just curious.
> 
> On the original subject, I've also been using pthreads on win2k for ~8
> months now and haven't had any problems.  I've only used it on single
> processor machines.
> 
> On Fri, 23 Mar 2001, Stephen R. Johns wrote:
> 
> 
>> Probably not related, but just in case...
>> 
>> I've been trying to port a linux program to pthreadw32, and found
>> a mutex issue/difference.
>> 
>> Linux allows threads other than the locking thread to unlock a mutex,
>> but pthreads does not.  So if you are trying to do that, your
>> unlocks never work.
>> 

Re: [pthread-win32] Re: pthreads on Win2k

[Tristan Savatier]

Stephen R. Johns wrote:
> 
> Probably not related, but just in case...
> 
> I've been trying to port a linux program to pthreadw32, and found
> a mutex issue/difference.
> 
> Linux allows threads other than the locking thread to unlock a mutex,
> but pthreads does not.

I don't recall that the POSIX standard places a restriction on
which thread can unlock a mutex, but it does not look like good
programming style to have a mutex locked and unlocked by different
threads..

If posix-thread places a restriction that is not defined by the
standard, it should be documented.  It does not look like this
one is a real problem... looks like POSIX should have put the
restriction in the standard!  I suppose that the underlying win32
threads do have this restriction.

-t