WebSVN – HelenOS-doc – Diff – /design/trunk/src/ch_intro.xml


<?xml version="1.0" encoding="UTF-8"?>
<chapter id="intro">
  <?dbhtml filename="intro.html" ?>
 
  <title>Introduction</title>
 
  <para>HelenOS is a portable operating system with support for a variety of modern
  processor architectures<footnote>
      <para>amd64, ia32, ia64, mips32 and ppc32.</para>
    </footnote>.</para>
 
  <para>This book describes the design and principles of the HelenOS operating
  system from the perspective of its microkernel as well as from the
  perspective of its userspace drivers and server tasks. Its primary goal is
  to present ideas behind each subsystem and highlight things that are
  specific to HelenOS. Although this text contains references to source code
  (e.g. function names), these are provided only to improve reader's
  orientation when reading the code. This book does not attempt to be a
  substitute for a reference manual and the reader is strongly encouraged to
  look for interface details there.</para>
 
  <section>
    <title>How to Read This Book</title>
 
    <para><xref linkend="architecture" /> contains overview of the overall
    HelenOS architecture.</para>
 
    <para><xref linkend="ds" /> describes essential data structures used both
    in the kernel and in the userspace.</para>
 
    <para><xref linkend="time" /> focuses on time management in the kernel and
    scheds some light on the userspace source of time.</para>
 
    <para><xref linkend="scheduling" /> is dedicated to threads and the
    scheduling subsystem.</para>
 
    <para><xref linkend="mm" /> describes memory management of physical and
    virtual memory.</para>
 
    <para><xref linkend="ipc" /> deals with the IPC subsystem.</para>
 
    <para><xref linkend="hardware" /> describes facilities that a userspace
    task can use in order to become a device driver.</para>
 
    <para><xref linkend="archspecs" /> presents some architecture specific
    issues.</para>
  </section>
</chapter>

Subversion Repositories HelenOS-doc

(root)/design/trunk/src/ch_intro.xml – Rev 131 → 151

Rev 131		Rev 151
1	<?xml version="1.0" encoding="UTF-8"?>	1	<?xml version="1.0" encoding="UTF-8"?>
2	<chapter id="intro">	2	<chapter id="intro">
3	<?dbhtml filename="intro.html" ?>	3	<?dbhtml filename="intro.html" ?>
4		4
5	<title>Introduction</title>	5	<title>Introduction</title>
6		6
-		7	<para>HelenOS is a portable operating system with support for a variety of modern
-		8	processor architectures<footnote>
-		9	<para>amd64, ia32, ia64, mips32 and ppc32.</para>
-		10	</footnote>.</para>
-		11
7	<para>This book describes the design and principles of the HelenOS operating	12	<para>This book describes the design and principles of the HelenOS operating
8	system from the perspective of its microkernel as well as from the	13	system from the perspective of its microkernel as well as from the
9	perspective of its userspace drivers and server tasks. Its primary goal is	14	perspective of its userspace drivers and server tasks. Its primary goal is
10	to present ideas behind each subsystem and highlight things that are	15	to present ideas behind each subsystem and highlight things that are
11	specific to HelenOS. Although this text contains references to source code	16	specific to HelenOS. Although this text contains references to source code
12	(e.g. function names), these are provided only to improve reader's	17	(e.g. function names), these are provided only to improve reader's
13	orientation when reading the code. This book does not attempt to be a	18	orientation when reading the code. This book does not attempt to be a
14	substitute for a reference manual and the reader is strongly encouraged to	19	substitute for a reference manual and the reader is strongly encouraged to
15	look for interface details there.</para>	20	look for interface details there.</para>
16		21
17	<section>	22	<section>
18	<title>How to Read This Book</title>	23	<title>How to Read This Book</title>
19		24
20	<para><xref linkend="architecture" /> contains overview of the overall	25	<para><xref linkend="architecture" /> contains overview of the overall
21	HelenOS architecture.</para>	26	HelenOS architecture.</para>
22		27
23	<para><xref linkend="ds" /> describes essential data structures used both	28	<para><xref linkend="ds" /> describes essential data structures used both
24	in the kernel and in the userspace.</para>	29	in the kernel and in the userspace.</para>
25		30
26	<para><xref linkend="time" /> focuses on time management in the kernel and	31	<para><xref linkend="time" /> focuses on time management in the kernel and
27	scheds some light on the userspace source of time.</para>	32	scheds some light on the userspace source of time.</para>
28		33
29	<para><xref linkend="scheduling" /> is dedicated to threads and the	34	<para><xref linkend="scheduling" /> is dedicated to threads and the
30	scheduling subsystem.</para>	35	scheduling subsystem.</para>
31		36
32	<para><xref linkend="mm" /> describes memory management of physical and	37	<para><xref linkend="mm" /> describes memory management of physical and
33	virtual memory.</para>	38	virtual memory.</para>
34		39
35	<para><xref linkend="ipc" /> deals with the IPC subsystem.</para>	40	<para><xref linkend="ipc" /> deals with the IPC subsystem.</para>
36		41
37	<para><xref linkend="hardware" /> describes facilities that a userspace	42	<para><xref linkend="hardware" /> describes facilities that a userspace
38	task can use in order to become a device driver.</para>	43	task can use in order to become a device driver.</para>
39		44
40	<para><xref linkend="archspecs" /> presents some architecture specific	45	<para><xref linkend="archspecs" /> presents some architecture specific
41	issues.</para>	46	issues.</para>
42	</section>	47	</section>
43	</chapter>	48	</chapter>