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From: lanches@adam.informatik.uni-stuttgart.de (Philipp Lanches)
Newsgroups: comp.sys.transputer
Subject: Process identification with Wptr
Message-ID: <10882@ifi.informatik.uni-stuttgart.de>
Date: 22 May 91 17:21:22 GMT
Sender: news@ifistg.uucp
Organization: Informatik, Uni Stuttgart, W.Germany
Lines: 29
Originator: lanches@adam

In order to observe the activity of low priority processes, I want to look at 
the list of active processes in the corresponding queue. The problem I have is:

	As a process does not have a unique workspace pointer (Wptr) -- it can
	be modified by ajw, gajw and call instructions --, how can I associate 
	at run-time the Wptrs from the queue to one of the active processes ?

Since I am using C (on a Meiko in-sun computing surface with CSTOOLS), I think 
I cannot assume a static and ordered workspace allocation like in OCCAM. It 
might be possible to find a very compiler-specific solution to this problem,
but I would prefer a more general mechanism suitable for C-programs (at least
for the INMOS ANSI C-compiler). It would be acceptable to use a little bit
assembler code.

If anybody has an idea or a solution please contact me by e-mail. If this point 
seems interresting, I will post a summary of the responses to the net.

Thank you.

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Philipp Lanches				IPVR/ISE, Universitaet Stuttgart
e-mail:					Breitwiesenstr. 20-22
  lanches@informatik.uni-stuttgart.de	W-7000 Stuttgart 80  (F.R.G)
 
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Philipp Lanches				IPVR/ISE, Universitaet Stuttgart
e-mail:					Breitwiesenstr. 20-22
  lanches@informatik.uni-stuttgart.de	W-7000 Stuttgart 80  (F.R.G)