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<?xml version="1.0" encoding="UTF-8"?>
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
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"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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<!ENTITY chintro SYSTEM "ch_intro.xml">
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<!ENTITY charcho SYSTEM "ch_arch_overview.xml">
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<!ENTITY chsched SYSTEM "ch_scheduling.xml">
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<!ENTITY chsynch SYSTEM "ch_synchronization.xml">
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<!ENTITY chmemmg SYSTEM "ch_memory_management.xml">
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<!ENTITY chipcom SYSTEM "ch_ipc.xml">
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<!ENTITY chhware SYSTEM "ch_hardware.xml">
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<!ENTITY chuspac SYSTEM "ch_userspace.xml">
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]>
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<book>
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<book>
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  <bookinfo>
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  <title>HelenOS Design Documentation</title>
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    <title>HelenOS Design Documentation</title>
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  </bookinfo>
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  <!-- Infroduction -->
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  <chapter>
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  &chintro;
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  <!-- Arch overview -->
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  &charcho;
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  <!-- Scheduling -->
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  &chsched;
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  <!-- Synchronization -->
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  &chsynch;
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  <!-- Memory management -->
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  &chmemmg;
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  <!-- Hardware handling -->
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  &chhware;
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  <!-- User space -->
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  &chuspac;
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  <title>Introduction</title>
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      <graphic align="center" fileref="images/helenos.gif" />
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      <para>The HelenOS project is an effort to develop an easily portable,
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      light but durable operating system. HelenOS supports SMP, multitasking
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      and multithreading on both 32-bit and 64-bit, little-endian and
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      big-endian, processor architectures, among wich are AMD64/EM64T
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      (x86-64), IA-32, IA-64 (Itanium), 32-bit MIPS, 32-bit PowerPC and SPARC
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      V9.</para>
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      <para>This manual should help you understanding design concepts of
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      different part of the operating system.</para>
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      <para>In case you are interested in our project or have any questions
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      about it, feel free to subscribe to our <ulink
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      url="http://www.helenos.eu/?reason=list">mailing list</ulink>. We are
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      looking for people to join our team or to merely try out our system and
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      become our beta testers.</para>
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  </chapter>
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  <chapter>
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    <title>Architecture overview</title>
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    <para>Couple of words about microkernel concept etc </para>
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  </chapter>
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  <chapter>
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    <title>Scheduling</title>
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    <section>
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        <title>Basic terms</title>
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        <para>Explain Task, Thread etc</para>
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    </section>
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    <section>
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      <title>Context switching</title>
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      <para>Something about context. Probably arch specific context notes.</para>
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    </section>
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    <section>
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        <title>Kernel clock</title>
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        <para>timer interrupt handling, slices, timeouts, delays</para>
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    </section>
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    <section>
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        <title>Scheduler</title>
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        <para>How scheduler designed and how it works.</para>
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    </section>
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  </chapter>
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  <chapter>
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    <title>Synchronization</title>
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    <section>
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      <title>Introduction. Concept.</title>
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      <para>Couple of words about global conception of sychronization</para>
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    </section>
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    <section>
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        <title>Active kernel synchronization. Spinlock.</title>
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    <para>Spinlocks explanation. Arch specific notes.</para>
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    </section>
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    <section>
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        <title>Passive kernel synchronization</title>
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        <section>
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          <title>Mutex</title>
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          <para>Mutex explanations</para>
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        </section>
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        <section>
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          <title>Semaphore</title>
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          <para>Semaphore explanations</para>
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        </section>
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        <section>
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          <title>Read/Write Locks</title>
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          <para>RWLocks explanation</para>
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        </section>
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        <section>
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          <title>Wait queues</title>
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          <para>Wait queue explanation</para>
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        </section>
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        <section>
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          <title>Conditional variables</title>
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          <para>Condvars explanation</para>
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        </section>
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    </section>
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    <section>
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      <title>Userspace synchronization. Futex.</title>
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      <para>Idea. Futex explanation.</para>
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    </section>
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  </chapter>
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  <chapter>
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    <title>Memory management</title>
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    <section>
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      <title>Virtual memory management</title>
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      <para></para>
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    </section>
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    <section>
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      <title>Physical memory management</title>
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      <para></para>
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    </section>
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    <section>
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      <title>Kernel allocators</title>
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      <section>
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        <title>Buddy allocator</title>
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        <para>Physical memory allocation is handled by buddy allocator.</para>
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      </section>
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      <section>
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        <title>Slab allocator</title>
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        <para></para>
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      </section>
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    </section>
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    <section>
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      <title>Memory sharing</title>
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      <para></para>
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    </section>
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  </chapter>
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  <chapter>
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    <title>Hardware handling. Device drivers.</title>
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    <para></para>
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  </chapter>
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  <chapter>
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    <title>IPC</title>
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    <para></para>
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  </chapter>
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  <chapter>
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    <title>User-space</title>
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    <para></para>
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  </chapter>
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</book>
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</book>
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