[fpc-devel] semaphores and mutes

[Peter Popov]

Where do you want me to post it?
Peter

On Fri, 20 Jun 2008 17:37:58 -0500, Boian Mitov <mitov at mitov.com> wrote:

>    Hi Peter,
>
> Thank you!
> I am already working to implement the Semaphores, and Mutexes.
> I need timeout. Can you please post the patch? This is actually very  
> important issue, as the libraries use threads extensively, and share  
> huge number of resources. The timeouts are needed to resolve deadlocks.
>
>   With best regards,
>     Boian Mitov
>
> --------------------------------------------------------------------
> Mitov Software
> http://www.mitov.com
> --------------------------------------------------------------------
>
>
> ----- Original Message ----- From: "Peter Popov" <ppopov at tamu.edu>
> To: "FPC developers' list" <fpc-devel at lists.freepascal.org>
> Sent: Friday, June 20, 2008 3:32 PM
> Subject: Re: [fpc-devel] semaphores and mutes
>
>
>> Anyways, some time ago I debuged the issue and patched kylix's SynObjs  
>> unit to cure that. Basically, the problem is, as expected, glibc. Older  
>> version did not have sem_timedwait() implemented. Later glibc included  
>> it, along with several new variants of the remaining semaphore  
>> routines. So, based on what thread model is used (LinuxThreads or NTPL)  
>> each semaphore routine is implemented several times. The thing is a  
>> total mess. Anyways, if one explicitly instructs the kylix linker which  
>> version of semaphore functions to use (they have to be consistent)  
>> TEvent.WaitFor can be implemnted for any timeout. If there is interest  
>> I can post the patch.
>>
>
> _______________________________________________
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