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Truly independent web browser
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Pankaj Raghav 7138395982 NVMe: Add shadow doorbell support 
Shadow doorbell feature was added in the NVMe spec to improve
the performance of virtual devices.

Typically, ringing a doorbell involves writing to an MMIO register in
QEMU, which can be expensive as there will be a trap for the VM.

Shadow doorbell mechanism was added for the VM to communicate with the
OS when it needs to do an MMIO write, thereby avoiding it when it is
not necessary.

There is no performance improvement with this support in Serenity
at the moment because of the block layer constraint of not batching
multiple IOs. Once the command batching support is added to the block
layer, shadow doorbell support can improve performance by avoiding many
MMIO writes.

Default to old MMIO mechanism if shadow doorbell is not supported.
2023-08-18 15:47:51 +02:00
.devcontainer Meta: Switch to clang-format-16 as the standard formatter 2023-07-08 10:32:56 +01:00
.github CI: Specify SERENITY_CACHE_DIR for test262 job 2023-08-14 15:37:02 -04:00
AK AK: Add missing include in RecursionDecision.h 2023-08-18 08:58:51 +03:30
Base Base: Update Audio subsystem documentation 2023-08-18 08:09:19 +01:00
Documentation Documentation: Remove qemu-system-x86 from explicit dependencies on Arch 2023-08-18 10:20:25 +02:00
Kernel NVMe: Add shadow doorbell support 2023-08-18 15:47:51 +02:00
Ladybird Ladybird, WebContent: Add option in debug menu to output GC graph dump 2023-08-17 18:27:02 +02:00
Meta LibPublicSuffix: Add Library and Generators 2023-08-17 15:30:23 +01:00
Ports Ports: Add lxt port 2023-08-18 11:43:19 +02:00
Tests LibGLSL: Add tests for GLSL parser 2023-08-18 15:29:48 +02:00
Toolchain Toolchain: Build Clang with RISC-V support 2023-08-11 13:35:17 +02:00
Userland LibWeb: Make HTML::SharedImageRequest GC allocated 2023-08-18 15:42:44 +02:00
.clang-format Everywhere: Remove needless trailing semi-colons after functions 2023-07-08 10:32:56 +01:00
.clang-tidy Meta: Disable the misc-no-recursion check in clang-tidy 2023-03-18 16:34:41 +01:00
.editorconfig Meta: Add .editorconfig 2022-09-10 17:32:55 +01:00
.gitattributes Repository: Protect port patches from CRLF/LF normalization 2022-01-12 01:08:38 +01:00
.gitignore Meta: Remove .gitignore from Base/ 2023-08-04 13:15:24 +02:00
.gn Meta: Add the start of a gn build based on the LLVM gn build 2023-07-09 16:22:58 -06:00
.mailmap Everywhere: Update copyrights with my new serenityos.org e-mail :^) 2023-07-15 16:21:29 +02:00
.pre-commit-config.yaml Meta: Add a post-commit commit message linter hook 2021-05-02 16:28:01 +02:00
.prettierignore LibJS: Add DisposableStack{, Prototype, Constructor} 2023-01-23 09:56:50 +00:00
.prettierrc Meta: Move prettier config files to the root of the repository 2020-08-24 18:21:33 +02:00
.ycm_extra_conf.py Meta: Remove i686 references in YCM configuration 2022-12-28 11:53:41 +01:00
azure-pipelines.yml CI: Remove extraneous toolchain job from Azure CI 2022-12-28 15:26:12 -05:00
CMakeLists.txt CMake: Add UNDEFINED_BEHAVIOR_IS_FATAL configure option 2023-08-13 05:14:07 +02:00
CONTRIBUTING.md Docs: Use the term 'amend' instead of 'squash' in CONTRIBUTING.md 2023-08-09 07:28:06 -04:00
LICENSE Meta: Update the year range in LICENSE :^) 2023-01-01 09:38:07 +00:00
README.md Meta: Add Andi Gallo to the contributors list :^) 2023-08-14 13:10:08 -06:00
SECURITY.md Meta: Add a security policy 2022-06-29 03:29:27 +00:00

README.md

SerenityOS

Graphical Unix-like operating system for x86-64 computers.

GitHub Actions Status Azure DevOps Status Fuzzing Status Sonar Cube Static Analysis Discord

FAQ | Documentation | Build Instructions

About

SerenityOS is a love letter to '90s user interfaces with a custom Unix-like core. It flatters with sincerity by stealing beautiful ideas from various other systems.

Roughly speaking, the goal is a marriage between the aesthetic of late-1990s productivity software and the power-user accessibility of late-2000s *nix. This is a system by us, for us, based on the things we like.

You can watch videos of the system being developed on YouTube:

Screenshot

Screenshot as of c03b788.png

Features

  • Modern x86 64-bit kernel with pre-emptive multi-threading
  • Browser with JavaScript, WebAssembly, and more (check the spec compliance for JS, CSS, and Wasm)
  • Security features (hardware protections, limited userland capabilities, W^X memory, pledge & unveil, (K)ASLR, OOM-resistance, web-content isolation, state-of-the-art TLS algorithms, ...)
  • System services (WindowServer, LoginServer, AudioServer, WebServer, RequestServer, CrashServer, ...) and modern IPC
  • Good POSIX compatibility (LibC, Shell, syscalls, signals, pseudoterminals, filesystem notifications, standard Unix utilities, ...)
  • POSIX-like virtual file systems (/proc, /dev, /sys, /tmp, ...) and ext2 file system
  • Network stack and applications with support for IPv4, TCP, UDP; DNS, HTTP, Gemini, IMAP, NTP
  • Profiling, debugging and other development tools (Kernel-supported profiling, detailed program analysis with software emulation in UserspaceEmulator, CrashReporter, interactive GUI playground, HexEditor, HackStudio IDE for C++ and more)
  • Libraries for everything from cryptography to OpenGL, audio, JavaScript, GUI, playing chess, ...
  • Support for many common and uncommon file formats (PNG, JPEG, GIF, MP3, WAV, FLAC, ZIP, TAR, PDF, QOI, Gemini, ...)
  • Unified style and design philosophy, flexible theming system, custom (bitmap and vector) fonts
  • Games (Solitaire, Minesweeper, 2048, chess, Conway's Game of Life, ...) and demos (CatDog, Starfield, Eyes, mandelbrot set, WidgetGallery, ...)
  • Every-day GUI programs and utilities (Spreadsheet with JavaScript, TextEditor, Terminal, PixelPaint, various multimedia viewers and players, Mail, Assistant, Calculator, ...)

... and all of the above are right in this repository, no extra dependencies, built from-scratch by us :^)

Additionally, there are over two hundred ports of popular open-source software, including games, compilers, Unix tools, multimedia apps and more.

How do I read the documentation?

Man pages are available online at man.serenityos.org. These pages are generated from the Markdown source files in Base/usr/share/man and updated automatically.

When running SerenityOS you can use man for the terminal interface, or help for the GUI.

Code-related documentation can be found in the documentation folder.

How do I build and run this?

See the SerenityOS build instructions. Serenity runs on Linux, macOS (aarch64 might be a challenge), Windows (with WSL2) and many other *Nixes with hardware or software virtualization.

Get in touch and participate!

Join our Discord server: SerenityOS Discord

Before opening an issue, please see the issue policy.

A general guide for contributing can be found in CONTRIBUTING.md.

Authors

And many more! See here for a full contributor list. The people listed above have landed more than 100 commits in the project. :^)

License

SerenityOS is licensed under a 2-clause BSD license.