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Michael Lotz 5c4d1c5e21 Complete rework of the heap implementation. Freelists are now part of the pages
and pages are now kept in lists as well. This allows to return free pages once
a bin does not need them anymore. Partially filled pages are kept in a sorted
linked list so that allocation will always happen on the fullest page - this
favours having full pages and makes it more likely lightly used pages will get
completely empty so they can be returned. Generally this now goes more in the
direction of a slab allocator.
The allocation logic has been extracted, so a heap is now simply attachable to
a region of memory. This allows for multiple heaps and for dynamic growing. In
case the allocator runs out of free pages, an asynchronous growing thread is
notified to create a new area and attach a new heap to it.
By default the kernel heap is now set to 16MB and grows by 8MB each time all
heaps run full.
This should solve quite a few issues, like certain bins just claiming all pages
so that even if there is free space nothing can be allocated. Also it obviously
does aways with filling the heap page by page until it overgrows.
I think this is now a well performing and scalable allocator we can live with
for quite some time. It is well tested under emulation and real hardware and
performs as expected. If problems come up there is an extensive sanity checker
that can be enabled by PARANOID_VALIDATION that covers most aspects of the
allocator. For normal operation this is not necessary though and is therefore
disabled by default.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23939 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-02-10 21:00:13 +00:00
3rdparty Only quit the loop on ENOENT to try and load next themes. 2008-02-01 03:54:01 +00:00
build have libilmimf built with libstdc++v2 2008-02-09 17:48:10 +00:00
data * Ported FreeBSD's ftpd to Haiku. 2008-02-03 16:37:49 +00:00
docs Fix the description for StartWatching() after a hint from Axel. There are two different behaviours for both overloaded variants. (which is bad, IMO) 2008-01-12 16:57:50 +00:00
headers Complete rework of the heap implementation. Freelists are now part of the pages 2008-02-10 21:00:13 +00:00
src Complete rework of the heap implementation. Freelists are now part of the pages 2008-02-10 21:00:13 +00:00
configure Add --include-3rdparty option to enable jam targets from 3rdparty/. It is suggested that 3rd party applications use the <3rdparty> grist to avoid shadowing Haiku stuff. (or what about <3rdparty!vendor> ?) 2008-01-25 14:48:51 +00:00
Jamfile Hook in 3rdparty/ to the main build. 2008-01-11 18:14:51 +00:00
Jamrules Added support for "optional packages". Those can be defined in 2007-09-05 18:36:17 +00:00
makehaikufloppy removed weird charachters at the end of the file 2006-12-12 13:03:06 +00:00
ReadMe Removed mentioning of non-BeOS platforms in the "Configuring on BeOS" 2007-03-08 19:28:06 +00:00
ReadMe.cross-compile * added two autoheader and gawk to the list of dependencies 2007-05-30 16:55:47 +00:00

Building on BeOS
================

For building on BeOS you need the development tools from:

  http://haiku-os.org/downloads

Please always use the most recent versions. They are required to build Haiku.


Building on a non-BeOS platform
===============================

Please read the file 'ReadMe.cross-compile' before continuing. It describes
how to build the cross-compilation tools and configure the build system for
building Haiku. After following the instructions you can directly continue
with the section Building.


Configuring on BeOS
===================

Open a Terminal and change to your Haiku trunk folder. To configure the build
you can run configure like this:

  ./configure --target=TARGET

Where "TARGET" is the target platform that the compiled code should run on:
  * haiku (default)
  * r5
  * bone
  * dano (also for Zeta)

The configure script generates a file named "BuildConfig" in the "build"
directory. As long as configure is not modified (!), there is no need to call
it again. That is for re-building you only need to invoke jam (see below).
If you don't update the source tree very frequently, you may want to execute
'configure' after each update just to be on the safe side.


Building
========

Haiku can be built in either of two ways, as disk image file (e.g. for use
with emulators) or as installation in a directory.

Image File
----------

  jam -q haiku-image

This generates an image file named 'haiku.image' in your output directory
under 'generated/'.

VMware Image File
-----------------

  jam -q haiku-vmware-image

This generates an image file named 'haiku.vmdk' in your output
directory under 'generated/'.

Directory Installation
----------------------

  HAIKU_INSTALL_DIR=/Haiku jam -q install-haiku

Installs all Haiku components into the volume mounted at "/Haiku" and
automatically marks it as bootable. To create a partition in the first place
use DriveSetup and initialize it to BFS.

Note that installing Haiku in a directory only works as expected under BeOS,
but it is not yet supported under Linux and other non-BeOS platforms.

Building Components
-------------------

If you don't want to build the complete Haiku, but only a certain
app/driver/etc. you can specify it as argument to jam, e.g.:

  jam Pulse

Alternatively, you can 'cd' to the directory of the component you want to
build and run 'jam' from there.

You can also force rebuilding of a component by using the "-a" parameter:

  jam -a Pulse


Running
=======

Generally there are two ways of running Haiku. On real hardware using a
partition and on emulated hardware using an emulator like Bochs or QEmu.

On Real Hardware
----------------

If you have installed Haiku to its own partition you can include this
partition in your bootmanager and try to boot Haiku like any other OS you
have installed. To include a new partition in the BeOS bootmanager run this
in a Terminal:

  bootman

On Emulated Hardware
--------------------

For emulated hardware you should build disk image (see above). How to setup
this image depends on your emulater. A tutorial for Bochs on BeOS is below.
If you use QEmu, you can usually just provide the path to the image as
command line argument to the "qemu" executable.

Bochs
-----

Version 2.2 of Bochs for BeOS (BeBochs) can be downloaded from BeBits:

  http://www.bebits.com/app/3324

The package installs to: /boot/apps/BeBochs2.2

You have to set up a configuration for Bochs. You should edit the ".bochsrc" to
include the following:

ata0-master: type=disk, path="/path/to/haiku.image", cylinders=122, heads=16, spt=63
boot: disk

Now you can start Bochs:

  $ cd /boot/apps/BeBochs2.2
  $ ./bochs

Answer with RETURN and with some patience you will see Haiku booting.
If booting into the graphical evironment fails you can try to hit "space" at the
very beginning of the boot process. The Haiku bootloader should then come up and
you can select some safe mode options.


Docbook documentation
=====================

Our documentation can be found in 'src/documentation/'. You can build it by
running 'jam' in that folder. The results will be stored in the 'generated/'
folder.