[M3devel] Threads summary for m3gdb

[Tony Hosking]

Yes, on Win32, M3 threads are win32 threads.

On Aug 8, 2007, at 7:27 PM, Randy Coleburn wrote:

> Rodney:
>
> I believe that on Windows (Win32) the implementation uses native OS  
> threads.  At least that is how it worked for cm v4.1.
>
> Regards,
> Randy
>
> Randy C. Coleburn
> Senior Systems Engineer, Communications, Networks, & Electronics  
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> >>> "Rodney M. Bates" <rodney.bates at wichita.edu> 8/8/2007 7:20 PM >>>
> I have been doing some work on m3gdb lately and am mulling over
> trying to improve the very rudimentary thread support.  With
> the new thread implementation, it is a good time.  I would like
> confirmation (or correction) of the following impressions I have
> gotten about thread handling in implementations of Modula-3.
>
> H! ere's what I think I understand:
>
> The old system uses threads entirely implemented in libm3core,
> using setjmp/longjmp to get execution moved around where it is
> needed.
>
> The new system, called for by -DPTHREAD  uses the pthreads library  
> instead.
>
> There is no use of any kind of kernel threads.
>
> The old thread system is tied to the older GC, which requires that
> system-dependent wrappers be used for many OS system calls.
>
> The new thread system is tied to the new GC, which doesn't need
> the wrappers, but has the compiler inserting calls to the GC in
> a few places.
>
> Is this all correct?
>
> -- 
> -------------------------------------------------------------
> Rodney M. Bates, retired assistant professor
> Dept. of Computer Science, Wichita State University
> Wichita, KS 67260-0083
> 316-978-3922
> rodney.bates at wichita.edu
>