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Truly independent web browser
53294 commits 1 branch 0 tags 443 MiB
C++ 74.4%
HTML 14.3%
JavaScript 8.5%
CMake 0.8%
Objective-C++ 0.6%
Other 1.3%
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Daniel Bertalan c0cf6e3744 CMake: Set -fvisibility-inlines-hidden on ELF platforms 
The C++ semantics of `inline` dictate that such functions might be
defined in multiple translation units. As with all other functions, they
must have the same address in all TUs. Because of this, the compiler
emits `inline` functions as weak symbols, which the dynamic linker can
then resolve to the same address everywhere.

This rule is responsible for a significant overhead at startup, as such
lookups happen by name. Namely, 86'000 of the 114'000 by-name symbol
lookups when loading LibWeb can be attributed to this. Most of these
are only ever defined in a single object, making this even more
pointless.

As nothing in our code relies on either ELF symbol interposition rules
or function address equality, we can use the -fvisibility-inlines-hidden
escape hatch, which causes this rule to be disregarded. As the symbols
are now hidden, no load-time symbol lookup is needed. This flag is used
without issues in other large C++ codebases like Chromium and LLVM.

Some relevant light reading, suggested by Nico:
- https://ridiculousfish.com/blog/posts/i-didnt-order-that-so-why-is-it-on-my-bill-episode-1.html
- https://www.cs.dartmouth.edu/~sergey/cs258/ABI/UlrichDrepper-How-To-Write-Shared-Libraries.pdf
- https://blog.llvm.org/2018/11/30-faster-windows-builds-with-clang-cl_14.html
- https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Dialect-Options.html#index-fvisibility-inlines-hidden
2023-08-12 05:14:20 +02:00
.devcontainer Meta: Switch to clang-format-16 as the standard formatter 2023-07-08 10:32:56 +01:00
.github CI: Restore running test262 and Wasm tests 2023-08-08 10:59:41 -04:00
AK Kernel: Don't allocate memory for names of processes and threads 2023-08-09 21:06:54 -06:00
Base Base: Document new GML usage method 2023-08-11 21:33:48 +02:00
Documentation CMake: Add option to disable network downloads altogether 2023-08-10 20:10:05 -06:00
Kernel Kernel+LibC: Pass 64-bit integers in syscalls by value 2023-08-12 01:14:26 +02:00
Ladybird Ladybird: Install headers for WebContent when used externally 2023-08-11 20:09:20 -06:00
Meta CMake: Set -fvisibility-inlines-hidden on ELF platforms 2023-08-12 05:14:20 +02:00
Ports Ports/cpio: Update to version 2.14 2023-08-12 02:07:54 +02:00
Tests LibWeb: Use available space to resolve table container width 2023-08-11 19:36:19 +02:00
Toolchain Toolchain: Build Clang with RISC-V support 2023-08-11 13:35:17 +02:00
Userland Utilities: Fix title formatting in man 2023-08-12 01:50:49 +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 Toolchain+Ports: Update LLVM to 16.0.6 2023-06-27 12:40:38 +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 Tim Ledbetter to the contributors list :^) 2023-08-07 12:38:03 +02:00
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.