No description
Find a file
Andreas Kling f0765e80f3 RequestServer: Avoid O(N^2) copy when draining response buffer
write_queued_bytes_without_blocking() used to allocate a Vector sized
to the entire queued response buffer and memcpy every queued byte into
it, on every curl on_data_received callback. When the client pipe was
slower than the network, the buffer grew, and each arriving chunk
triggered a full copy of everything still queued. With enough pending
data this added up to tens of gigabytes of memcpy per request and
stalled RequestServer for tens of seconds.

Drain the stream in a loop using peek_some_contiguous() + send()
directly from the underlying chunk, and discard exactly what the
socket accepted. No intermediate buffer, no copy. The loop exits on
EAGAIN and enables the writer notifier, matching the previous
back-pressure behavior.
2026-04-22 13:32:07 +02:00
.devcontainer Documentation+Meta: Remove references to nonexistent Toolchain directory 2026-04-21 06:56:32 -04:00
.github Meta: Move BuildVcpkg script to the Meta directory 2026-04-20 13:17:06 -04:00
AK AK: Add AllocatingMemoryStream::peek_some_contiguous() 2026-04-22 13:32:07 +02:00
Base/res LibURL+LibWeb+LibWebView: Convert about:version to a proper WebUI 2026-04-21 06:59:11 -04:00
Documentation Documentation+Meta: Remove references to nonexistent Toolchain directory 2026-04-21 06:56:32 -04:00
Libraries LibWeb/Bindings: Move parsed IDL entities into Context 2026-04-22 13:26:01 +02:00
Meta LibWeb/Bindings: Move parsed IDL entities into Context 2026-04-22 13:26:01 +02:00
Services RequestServer: Avoid O(N^2) copy when draining response buffer 2026-04-22 13:32:07 +02:00
Tests LibWeb: Skip unstyled descendants in animation updates 2026-04-22 10:14:47 +02:00
UI LibURL+LibWeb+LibWebView: Convert about:version to a proper WebUI 2026-04-21 06:59:11 -04:00
Utilities Utilities: Mark unused variable with maybe_unused 2026-04-20 15:45:58 -06:00
.clang-format Meta: Enforce newlines around namespaces 2025-05-14 02:01:59 -06:00
.clang-tidy Meta: Disable clang-tidy's const correctness checks 2025-07-08 11:04:15 -04:00
.clangd Meta: Enable angled brackets in clangd 2026-03-20 19:32:14 +01:00
.editorconfig Meta: Add .editorconfig 2022-09-10 17:32:55 +01:00
.gitattributes LibGfx: Remove support for the various "portable" image formats 2024-06-17 21:57:35 +02:00
.gitignore Meta: Add Rust toolchain as a build dependency 2026-02-24 09:39:42 +01:00
.mailmap Meta: Update my e-mail address everywhere 2024-10-04 13:19:50 +02:00
.pre-commit-config.yaml Meta: Replace deprecated pre-commit stage name 2024-10-18 09:40:59 +02:00
.prettierignore Tests: Exclude JS AST and bytecode tests from prettier checks 2026-02-19 02:45:37 +01:00
.prettierrc Meta: Increase the line length enforced by prettier to 120 2025-10-31 19:55:50 -04:00
.ycm_extra_conf.py Meta: Sort all python imports 2025-06-09 11:25:14 -04:00
Cargo.lock LibJS+LibUnicode: Use LibUnicode as appropriate for lexing JavaScript 2026-04-19 10:39:26 +02:00
Cargo.toml LibGfx: Implement YUV->RGBA color conversion for CPU painting 2026-04-18 01:25:00 -05:00
CMakeLists.txt CMake: Set VCPKG_MANIFEST_FEATURES as a cache variable 2026-04-20 18:41:42 -04:00
CMakePresets.json CMake+CI: Use the same preset names on every platform 2026-01-17 12:18:46 -07:00
CODE_OF_CONDUCT.md Meta: Add code of conduct (from the Ruby community) 2024-10-02 09:49:52 +02:00
CONTRIBUTING.md Meta: Disallow PR descriptions entirely generated by AI 2026-04-05 16:17:29 +02:00
ISSUES.md Everywhere: Document use of ladybird.py over ladybird.sh 2025-05-29 16:24:17 -04:00
LICENSE Meta: Update license year 2025-02-10 11:40:57 +00:00
pyproject.toml Meta: Use "extend-select" to enable non-default python linters 2025-06-09 17:49:35 -04:00
README.md Libraries: Remove LibArchive 2024-11-25 13:37:45 +01:00
rust-toolchain.toml Meta: Pin Rust toolchain version 2026-04-16 23:42:22 +02:00
rustfmt.toml Rust: Add a config file for rustfmt 2026-04-18 08:05:47 -04:00
SECURITY.md Documentation: Make updates to align better with new issue template 2024-10-31 09:18:08 +01:00
vcpkg-configuration.json Meta: Add overlay port for vulkan-loader 2024-07-07 15:56:59 +02:00
vcpkg.json CMake: Add GTK4 as a GUI framework option 2026-04-17 11:17:56 -04:00

Ladybird

Ladybird is a truly independent web browser, using a novel engine based on web standards.

Important

Ladybird is in a pre-alpha state, and only suitable for use by developers

Features

We aim to build a complete, usable browser for the modern web.

Ladybird uses a multi-process architecture with a main UI process, several WebContent renderer processes, an ImageDecoder process, and a RequestServer process.

Image decoding and network connections are done out of process to be more robust against malicious content. Each tab has its own renderer process, which is sandboxed from the rest of the system.

At the moment, many core library support components are inherited from SerenityOS:

  • LibWeb: Web rendering engine
  • LibJS: JavaScript engine
  • LibWasm: WebAssembly implementation
  • LibCrypto/LibTLS: Cryptography primitives and Transport Layer Security
  • LibHTTP: HTTP/1.1 client
  • LibGfx: 2D Graphics Library, Image Decoding and Rendering
  • LibUnicode: Unicode and locale support
  • LibMedia: Audio and video playback
  • LibCore: Event loop, OS abstraction layer
  • LibIPC: Inter-process communication

How do I build and run this?

See build instructions for information on how to build Ladybird.

Ladybird runs on Linux, macOS, Windows (with WSL2), and many other *Nixes.

How do I read the documentation?

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

Get in touch and participate!

Join our Discord server to participate in development discussion.

Please read Getting started contributing if you plan to contribute to Ladybird for the first time.

Before opening an issue, please see the issue policy and the detailed issue-reporting guidelines.

The full contribution guidelines can be found in CONTRIBUTING.md.

License

Ladybird is licensed under a 2-clause BSD license.