37eda488be
Before this commit, *all* ConditionVariable operations (yes, all; even Wait, Notify, etc.) went through a single spinlock, that also protected the sConditionVariableHash. This obviously does not scale so well with core count, to say the least! With this commit, we add spinlocks to each Variable and Entry. This makes locking somewhat more complicated (and nuanced; see inline comment), but the trade-off seems completely worth it: (compile HaikuDepot in VMware, 2 cores) before real 1m20.219s user 1m5.619s sys 0m40.724s after real 1m12.667s user 0m57.684s sys 0m37.251s The more cores there are, the more of an optimization this will likely prove to be. But 10%-across-the-board is not bad to say the least. Change-Id: I1e40a997fff58a79e987d7cdcafa8f7358e1115a
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 OpenGrok servers:
- http://xref.plausible.coop/ (provided by Landon Fuller)
- http://code.metager.de/source/xref/haiku (provided by MetaGer)
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.