[fpc-devel] Multithreading under DOS

[Tomas Hajny]

On Thu, September 26, 2013 14:11, Sven Barth wrote:
> 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 :)

Well, that is nice, but I haven't seen a statement (with an appropriately
big exclamation mark ;-) ) about all started threads using this API being
required to call this procedure regularly...

Tomas