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Unix system programming in ocaml ( UPPOG2 } Torrents

These course notes originate from a system programming course Xavier Leroy
taught in 1994 to the first year students of the Master’s program in fundamental
and applied mathematics and computer science at the École Normale Supérieure.
This earliest version used the Caml-Light [1] language. For a Master’s course in
computer science at the École Polytechnique taught from 2003 to 2006, Didier
Rémy adapted the notes to use the OCaml language. During these years, Gilles
Roussel, Fabrice Le Fessant and Maxence Guesdon helped to teach the course
and also contributed to this document. The new version also brought additions
and updates. In ten years, some orders of magnitude have shifted by a digit
and the web has left its infancy. For instance, the http relay example, now
commonplace, may have been a forerunner in 1994. But, most of all, the OCaml
language gained maturity and was used to program real system applications like
Unison [18].
Tradition dictates that Unix system programming must be done in C. For
this course we found it more interesting to use a higher-level language, namely
OCaml, to explain the fundamentals of Unix system programming.
The OCaml interface to Unix system calls is more abstract. Instead of en-
coding everything in terms of integers and bit fields as in C, OCaml uses the
whole power of the ML type system to clearly represent the arguments and re-
turn values of system calls. Hence, it becomes easier to explain the semantics of
the calls instead of losing oneself explaining how the arguments and the results
have to be en/decoded. (See, for example, the presentation of the system call
wait, page 42.)
Furthermore, due to the static type system and the clarity of its primitives, it
is safer to program in OCaml than in C. The experienced C programmer may see
these benefits as useless luxury, however they are crucial for the inexperienced
audience of this course.
A second goal of this exposition of system programming is to show OCaml
performing in a domain out of its usual applications in theorem proving, com-
pilation and symbolic computation. The outcome of the experiment is rather
positive, thanks to OCaml’s solid imperative kernel and its other novel aspects
like parametric polymorphism, higher-order functions and exceptions. It also
shows that instead of applicative and imperative programming being mutually
exclusive, their combination makes it possible to integrate in the same program
complex symbolic computations and a good interface with the operating system.
These notes assume the reader is familiar with OCaml and Unix shell com-
mands. For any question about the language, consult the OCaml System docu-
mentation [2] and for questions about Unix, read section 1 of the Unix manual or
introductory books on Unix like [5, 6].
This document describes only the programmatic interface to the Unix sys-
tem. It presents neither its implementation, neither its internal architecture.
The internal architecture of bsd 4.3 is described in [8] and of System v in [9].
Tanenbaum’s books [13, 14] give an overall view of network and operating system
architecture

Book Details :

Size : 877 Kb
Pages : 173
Title : Unix system programming in
ocaml
Laguage : English
Format : pdf

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unix system programming inocaml { UPPOG2 } Torrents