Subject:
Re: [nanogui] Shared Library
From:
Jordan Crouse ####@####.####
Date:
31 May 2001 14:10:58 -0000
Message-Id: <01053108084701.08200@cosmic>
There are many global variables that will reach up and bite you when you try
to use shared libraries. This is especially true when you start using
multiple clients. Plus, to make things even more fun, the bugs are very hard
to find (true to the nature of the shared library).
The best solution is to start taking the global variables that differ from
client to client and put them into an array or linked list of structures, and
requiring that each client register before using the database (something that
can be easily done in GrOpen).
This is definately something that should be done at some point, but as long
as statically compiled Nano-X programs continue to weigh in at about 20 - 30K
a piece, I won't be *too* worried.
Jordan
On Thursday 31 May 2001 04:52, Sadeesh Kumar mentioned:
> Hi,
> I think u wrongly understood my question.
> For me, the problem is only in using of microwindows shared library.
>
> ok, i will explain my problem in detail.
>
> Rightnow i am using microwindows 0.89 pre7. I have to build the
> microwindows as a shared library.
> When i tested this shared library build in embedded linux on x86(pc)
> platform, it is working fine. I didn't find any problem.
>
> But my target platform is PPC405gp. So i crosscompiled(using ppc_4xx-gcc)
> and built the microwindows shared library for ppc. When i tested this, i am
> facing the problem in mouse handling. but when i tested the static library,
> everything works fine.
>
> I remember, Greg, one of his email recommended that, not to use shared
> library. But i came into the situation that, i have to use shared library.
> Even now, i don't know why it is giving problem in only ppc not in x86. )
>
> So for that, if anyone of you share your experiences in microwindows
> shared library, it will be very helpful to fix the shared library problem.
>
> With regards,
> sadeesh.
>
>
>
>
>
>
> -----Original Message-----
> From: ####@####.#### ####@####.#### Behalf Of Robert E.
> Hartley
> Sent: Thursday, May 31, 2001 8:33 PM
> To: ####@####.####
> Subject: Re: [nanogui] Shared Library
>
>
> I am not sure what OS you are using, but I found the following useful on
> Linux.
>
> Try using an _init() method so that it is automatically invoked before
> dlopen() returns when a shared lib is first opened.
>
> Good luck,
>
> Rob
>
> Sadeesh Kumar wrote:
> > Hi Greg,
> > Can you give some suggestion for the shared library?.
> >
> > With regards,
> > sadeesh.
> >
> > -----Original Message-----
> > From: Sadeesh Kumar ####@####.####
> > Sent: Tuesday, May 29, 2001 7:57 PM
> > To: ####@####.####
> > Subject: [nanogui] Shared Library
> >
> > Hi,
> > Have anyone tried the Microwindows(nanox api) as shared library?.
> > As i seen the Greg's mail, he recommended not to use shared library and,
> > when u use shared library, global data is not initalising properly.
> >
> > In my case, i came into the situation that, i must use shared
>
> library.
>
> > If anyone has already tried sharedlibrary, please give some
>
> hints/ideas
>
> > that, where are all it will give the problem.
> >
> > With regards,
> > Sadeesh.
> >
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