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