[fpc-devel] Multithreading under DOS

Sven Barth pascaldragon at googlemail.com
Thu Sep 26 14:11:38 CEST 2013

On 26.09.2013 13:28, Tomas Hajny wrote:
> On Thu, September 26, 2013 11:55, Michael Schnell wrote:
>> In fact here seems to be a library that might be usable:
>> http://www.arl.wustl.edu/~fredk/Courses/OS/wuthreads.html
> All of your links refer to Unix (or even explicitly Linux). Even just the
> definition of "kernel space" and "user space" gives different results for
> DOS and POSIX. Moreover, then end of
> http://www.e-reading.mobi/chapter.php/143358/128/Tanenbaum_-_Distributed_operating_systems.html
> suggests that pre-emptive multithreading is hardly possible (if at all)
> with pure user space implementation; FPC TThread design is based on an
> assumption of a pre-emptive multithreading.

Well, we do have a TThread.Yield procedure since the last time I worked 
on TThread :)


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