1. Laurențiu Cristian Ion
December 14th, 2011

2. What is HAIKU?

3. Haiku is an open source operating system
currently in development that specifically targets
personal computing. Inspired by the Be
Operating System, Haiku aims to become a fast,
efficient, simple to use, easy to learn and yet very
powerful system for computer users of all levels.

4. A story about BeOS

5. Jean-Louis Gassée wants to start a new company,
so he needs a name.
He grabs a dictionary, randomly picks Be

6. Be, Inc.

7. Wants To Build a New Computer,
With No Legacy Cruft,
BeBox:

8. Couldn't Find a Good OS,
So Decided to Build It,
Alas, BeOS:

9. Time Goes By,
Apple Offers Be $120 Million,
Then $200 Million,
Gassee Wants $400 Million,
Bad Idea,
Apple Balks,
Then Buys NeXT for $400 Million (oh the irony)

10. August 2001: Be, Inc. Sold to Palm for $11 Million

11. Hmm, Should Have Taken the $200 Million?

12. Also August 2001: OpenBeOS Project Started,
By Michael Phipps and Other BeOS Fans

13. Will Rewrite BeOS As Open Source,
They Need a New Name.
A Long List Is Made,
A Poll Is Taken,
Haiku Is Chosen From Culled List.

15. Technical Features
• Kernel
• Modules & Drivers
• OpenBFS
• Queries
• File System Layout
• Kits
• BMessage
• Add-ons
• Replicants
• UI

16. Kernel
• Fork of the NewOS kernel
• Preemptive Multithreading
• Modular design
• Native IPC
– Semaphores
– Ports
– Areas (shared memory)

17. Modules & Drivers
• Busses
• Module Hierarchy
– get_module(''bus/usb/v1'', &m)
• Auto probing
– Open(''/dev/input/foo/1'') -> rescan input drivers
• If it's supported, it just works!

18. OpenBFS
• 64 bit
• Journaled
• Built for large files (multimedia)
• Extended Attributes (Meta-Data)
– Typed
• Icon
• Int
• Float
• String
– Mime type
• ...
• Indexed = Searchable = Database-like

19. Queries
• Formula-based search on meta-data
• Live update from file-systems
• Used by applications
• Used in many places
– Searching for Contacts
• ((META:email==''*foo*@bar.com''))
• ((IM:status==''Online''))
– Mail files
• ((MAIL:status==''New''))
– MP3
• ((Audio.Year>1990)&&(Audio.Artist==''[Ee]nigma''))
– Finding Replicants
– GoogleFS: 8*109 online bookmarks

20. File System Layout
• /boot/system • /boot/{home|users/*}
– etc – mail, people
– bin – bin
– system – config
• lib
• lib
• add-ons
• add-ons
– ...
– kernel
• Settings
– input_server
– ...
– ...
• /boot/common
• /boot/apps
– bin
– BeAE
– lib
– Paladin
– Include
– WonderBrush – ...

21. Kits
• Clean, Uniform C++ API • Inheritance:
• Many Kits • BWindow
– Kernel – BDirectWindow
– Support • BView
– Storage – BGLView
– Interface – BTextView
– Media – ...
– ... • BEntryList
– BDirectory
– BQuery
• ...

22. BMessage
• System-wide multi-purpose messaging
– 'what' code defines the meaning
– Target and sender
– Typed, named fields
• Int
• Float
• String
• BMessage :)
• ...
• Used everywhere: Drag & Drop, Settings...
• Even the kernel sends them.

23. Add-ons
• Kernel modules (bus managers, drivers)
• Graphics drivers
• Media
– Drivers
– Codecs
– Nodes
• Translators
– Pictures
– Text (html, ...)
• Input Devices
– Drivers
– Methods
• ...

24. UI
• Clean
• Consistent
• Multi-threaded = responsiveness
• Still allows for foreign frameworks
– SDL
– NSPR (FireFox aka BeZillaBrowser)
– Qt
– WxWidgets port in progress...

25. Drivers
• Video – ATI, nVidia, Neomagic, Intel, VESA
• Audio – OSS, Creative, Echo, VIA, Maudio, HDA
• Network – Most ethernet chipsets
• Wireless – WEP working, WPA/WPA2 in progress
• USB – support for ECHI, UHCI and OHCI
• USB mice, keyboards and mass storage
• Some USB webcam support
• OpenGL via MESA project

26. Home Screen

27. About this system

28. Applications folder

29. Demo folder

30. Desktop applets folder

31. Preferences folder

32. Tracker Query

33. Mounting Volumes

34. Various Replicants

35. Touchpad Preferences

36. WonderBrush

37. Icon-O-Matic

38. Media Player

39. Haiku Installation

55. ?