Thread View: comp.sys.transputer
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Started by Philipp Lanches
Wed, 22 May 1991 17:21
Process identification with Wptr
Author: Philipp Lanches
Date: Wed, 22 May 1991 17:21
Date: Wed, 22 May 1991 17:21
29 lines
1957 bytes
1957 bytes
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. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Philipp Lanches IPVR/ISE, Universitaet Stuttgart e-mail: Breitwiesenstr. 20-22 lanches@informatik.uni-stuttgart.de W-7000 Stuttgart 80 (F.R.G) -- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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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