6d9329be05
This is analogous to the AVLTree used for kernel address ranges in VMKernelAddressSpace. It does not use an additional DoublyLinkedList however. Using a binary tree speeds up many operations that previously had to iterate the area list linearly to find normal and reserved areas, insertion start points, etc. It especially benefits LookupArea which is called for every page fault and from area_for() when randomly accessing different areas as that would make the previously used area hint (i.e. a one level lookup cache) ineffective. The overhead of the tree versus the doubly linked list for iteration, insertion and removal is reasonably small and pales in comparison to what the linear searches previously took up. Fixes the lookup performance in #15995. Change-Id: I48319fe6a2e4327826e90ebca7246c7c419b5218 Reviewed-on: https://review.haiku-os.org/c/haiku/+/2839 Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Haiku
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Haiku is an open-source operating system that specifically targets personal computing. Inspired by the BeOS, Haiku is fast, simple to use, easy to learn and yet very powerful.
Goals
- Sensible defaults with minimal configuration required.
- Clean, clear, concise code.
- Unified desktop environment.
Trying Haiku
Haiku provides pre-built nightly images and release images. Haiku is compatible with a large variety of hardware, but in case you don't want to "take the plunge" and install Haiku on bare metal, you can install it on a virtual machine (VM) instead. If you've never used a VM before, you can follow one of the "Emulating Haiku" guides.
Compiling Haiku
See ReadMe.Compiling.
Contributing
Haiku is a meritocratic open source project with a large variety of tasks. Even if you can't write code, you can still help! Haiku needs designers, (technical) writers, translators, testers... Get involved and help out!
Contributing code
If you're submitting a patch to us, please make sure you're following the patch submitting guidelines.
If you're having trouble finding something in the source tree, you can use one of our web-based source code browsers:
- https://xref.landonf.org/ (OpenGrok, provided by Landon Fuller)
- https://git.haiku-os.org/ (git, provided by Haiku, Inc.)
Contributing documentation
The main piece of documentation that still needs work are the API docs (found
in the tree at docs/user). Just find an undocumented class, write
documentation for it, and submit a patch.
Contributing translations
See wiki:i18n.
Contributing software ports
See HaikuPorts.
Contributing to our infrastructure
See Infrastructure.