C++ and multitasking

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2 total messages Started by Bjarne Stroustrup Mon, 14 Apr 1986 02:29

#159

Author: Bjarne Stroustrup
Date: Mon, 14 Apr 1986 02:29

21 lines
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> From: reddy@uiucdcs.CS.UIUC.EDU
> Subject: C++ and multitasking
>
> I recall that the earlier Class-C had multitasking (or some simulation of
> it).  Has that been thrown out in C++?  Or, is there some library that
> provides it?

``C with classes'' had a library of classes and functions for event driven
simulation in the Simula-style. One of the original reasons for designing
``C with classes'', that is now C++, was to be able to have such a library.

The task library still exists (virtually unchanged), is in use, and is
shipped as part of the C++ library. It is documented in the C++ release
notes. Unfortunately, it only runs on VAXs and some 3Bs. It has been
ported to M68K machines, but the source is not shipped. It is good for
simulation, OK for many other uses of co-routines, and not suitable for
any form of real parallelism.

The main reason it is not described in the book is that I'm convinced that
given C++ as implemented today I or someone else can do a much better job
than I could using the first version of ``C with classes'' 6 years ago.

C-compilers on PC's; simulation

#184

Author: Markku Tamminen
Date: Sun, 04 May 1986 22:26

24 lines
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We are developing an expert system shell for embedded systems, and have
acquired c++ as our favorite language for that. One aspect of the work
is that discrete event simulation is central in evaluating the embedded
systems to be built. Our development environment is a 3B2/400 but the
run-time systems will be in the 80286 class, and for various reasons
also final simulators should be able operate on PC's (AT).

For c++ to be chosen in the project (against, e.g., PL/M) it is paramount
that we can compile the code (as a final step) on/for a PC.

I would like to know of C-compilers on PC's, that provenly compile the C-code
produced by the c++ front end. If relevant, I will summarize to the net.

I would also be interested in experiences/enhancements of the c++ simulation
primitives, especially in an environment similar to ours.

Markku Tamminen
Helsinki University of Technology
Laboratory of Information Processing Science
02150 ESPOO 15 FINLAND
Tel: 358-0-4512020 (460144)
ARPANET: mit%hut.uucp%fingate.bitnet%cernvax.bitnet@wiscvm.wisc.edu
BITNET: mit%hut.uucp@fingate
UUCP (more expensive): {seismo!mcvax, enea!tut}!penet!hut

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