wizer
chromium
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wizer | chromium | |
---|---|---|
10 | 224 | |
875 | 17,574 | |
3.4% | 2.6% | |
7.0 | 10.0 | |
11 days ago | 2 days ago | |
Rust | ||
Apache License 2.0 | BSD 3-clause "New" or "Revised" License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
wizer
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RustPython
> once by the wasm runtime to compile the rust-python wasm
I'm not sure what you mean by that. The runtime doesn't compile WASM, it simply executes it.
There are tools for dealing with interpreter runtime overhead this by pre-initalizing the environment like Wizer[0]. ComponentizeJS[1] uses it to pre-initialize the Spidermoney engine it packages to gain fast startup times (and you can then prune the initialization only code with wasm-opt). As techniques like ComponentizeJS are also being applied for a specific set of interpreted files, you can even prune parts of the interpreter that would never be used for that specific program. If you want to go even further you could record specific execution profiles and optimize further by those.
[0]: https://github.com/bytecodealliance/wizer
[1]: https://github.com/bytecodealliance/ComponentizeJS
- Are V8 isolates the future of computing?
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Netlify Edge Functions: A new serverless runtime powered by Deno
Edge functions are typically run intermittently, with their runtime stopped to free up resources between runs. Therefore a big factor is startup and shutdown speed. Containers are pretty bad there. Deno is better, and WASM is unbeatable, especially with things like Wizer[0].
[0]https://github.com/bytecodealliance/wizer
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Building a WebAssembly-powered serverless platform
I imagine startup cost could be amortized by something like wizer: https://github.com/bytecodealliance/wizer
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Containerless! How to Run WebAssembly Workloads on Kubernetes with Rust
There are security benefits to running each request in its own instance, as it helps prevent accidental leaking of state between requests. To avoid doing lots of expensive initializations, we have a tool called wizer which lets users run their program's initialization once, create a snapshot, and then use that snapshot to do fast startups that don't rerun the whole initialization each time.
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Is it possible in Rust to save the complete state of a program and restore it later? Such as may be accomplished in some implementations of Common Lisp
See https://github.com/bytecodealliance/wizer for an implementation of this approach.
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Bytecode Alliance
It should probably be named "Making JavaScript to startup fast on WebAssembly", since the runtime speed is not really improved by the approach they exposed.
Besides that I think Wizer [1] is both an elegant and a simple solution to speed up startup speed with Wasm.
[1] - https://github.com/bytecodealliance/wizer#using-wizer-as-a-l...
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A JavaScript optimizing compiler
A similar project, for WebAssembly so with limited scope is this: https://github.com/bytecodealliance/wizer. And somehow similar but limited on LLVM IR a colleague worked on this for Cheerp (the compiler used here as backend): https://github.com/leaningtech/cheerp-meta/wiki/Cheerp-PreExecuter.
- Wizer: snapshot an initialized Wasm instance and save the result as a new, pre-initialized Wasm module. Up to 6x faster start up on my test workloads
- Wiser: snapshot an initialized Wasm instance and save the result as a new, pre-initialized Wasm module. Up to 6x faster start up on my test workloads
chromium
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Demystifying the Shadow DOM
One of the unexpected use of shadow DOMs for me was a document generated for image resource URLs [1], because the HTML standard apparently specifies the exact DOM structure of the generated document except for the `` element [2].
[1] https://github.com/chromium/chromium/blob/f02ca73/third_part...
[2] https://html.spec.whatwg.org/multipage/document-lifecycle.ht...
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Detect when your installed Chrome extensions have changed owners
Recently my favorite open source mouse gestures extension SmartUp Gestures was taken over by some shady entity (with github no longer being updated of course).
I opened Chrome ticket that they should ask to re-enable extension when ownership changes. They just closed the ticket replying with this link:
https://chromium.googlesource.com/chromium/src/+/main/extens...
:(
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Supermium – Chromium fork for Win 2003 and newer
Hmm. It looks like files with the .lnk or .pif file extension can only be downloaded on a user gesture: https://chromium.googlesource.com/chromium/src/+/39841e54180...
So it can't be done silently. Although, I do wish the type was marked "DANGEROUS" a la dll files.
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New Linux glibc flaw lets attackers get root on major distros
On Linux, Chromium uses setuid or user namespaces to restrict the access of sandboxed components and seccomp-bpf to reduce the kernel attack surface.
Check out the Chromium docs on this topic: https://chromium.googlesource.com/chromium/src/+/HEAD/docs/l...
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Microsoft Edge ignores user wishes, slurps tabs from Chrome without permission
You can also disable JIT in Firefox by setting javascript.options.baselinejit to false in about:config, although you won't get CET.
[1] https://github.com/chromium/chromium/blob/12c232c43ce7324d30...
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Apple Announces Changes to iOS, Safari, and the App Store in the European Union
Chromium targets iOS already: https://chromium.googlesource.com/chromium/src/+/main/docs/i...
- We build X.509 chains so you don't have to
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Google Is Tracking You Even in Incognito Mode, New Disclaimer Is Up
For the sake of completeness, I've traced the evolution of the notice over time:
From 2008-07-26: "Going incognito doesn't affect the behavior of other people, servers, or software. Be wary of: / • Websites that collect or share information about you / • Internet service providers or employers that track the pages you visit / • Malicious software that tracks your keystrokes in exchange for free smileys / • Surveillance by secret agents / • People standing behind you" (https://chromium.googlesource.com/chromium/src/+/09911bf300f...)
From 2013-12-07: "Going incognito doesn't affect the behavior of other people, servers, software, or people standing behind you." (https://chromium.googlesource.com/chromium/src/+/c5e36c57178...)
From 2013-12-13: "However, you aren't invisible. Going incognito doesn't hide your browsing from your employer, your internet service provider, or the websites you visit." (https://chromium.googlesource.com/chromium/src/+/70821506825...)
From 2014-02-27: "However, you aren't invisible. Going incognito doesn't hide your browsing from your employer, your internet service provider, governments and other sophisticated attackers, or the websites you visit." (https://chromium.googlesource.com/chromium/src/+/ab54bd65701...)
From 2014-04-29: "Going incognito doesn't hide your browsing from your employer, your internet service provider, or the websites you visit." (https://chromium.googlesource.com/chromium/src/+/eb09a62ef40...)
From 2016-01-15: "However, you aren't invisible. Going incognito doesn’t hide your browsing from your employer, your internet service provider, or the websites you visit." (https://chromium.googlesource.com/chromium/src/+/b7dac1a6a79...)
From 2017-02-27: "Your activity might still be visible to: / • Websites you visit / • Your employer / • Your internet service provider" (https://chromium.googlesource.com/chromium/src/+/cfe102adddc...)
From 2017-03-29: "Your activity might still be visible to: / • Websites you visit / • Your employer or school / • Your internet service provider" (https://chromium.googlesource.com/chromium/src/+/7ca3ccf74e8...)
(Note that some of these were behind a feature flag for a few months.) Also, it looks like they've been intending to modify the new-tab page text for Incognito windows for some time, as part of the "Revamped Incognito NTP" project. You can view the modified text with 'chromium --enable-features=IncognitoNtpRevamp':
From 2021-08-13: "What Incognito doesn't do / Incognito does not make you invisible online: / • Sites know when you visit them / • Employers or schools can track browsing activity / • Internet service providers may monitor web traffic" (https://chromium.googlesource.com/chromium/src/+/e6ae57ba385...)
From 2022-01-25: "What Incognito doesn't do / Incognito does not make you invisible online: / • Sites and the services they use can see visits / • Employers or schools can track browsing activity / • Internet service providers can monitor web traffic" (https://chromium.googlesource.com/chromium/src/+/8b349f6c984...)
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What Progressive Web App (PWA) Can Do Today
Blink can now be compiled for iOS, but without JIT or WASM:
https://chromium.googlesource.com/chromium/src/+/main/docs/i...
https://bugs.chromium.org/p/chromium/issues/detail?id=141170...
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People like me are why you shouldn't run a hosting company
I think its weird that Vercel has this limit. There is no practical reason I can think of for having such a limit on URL characters that is so small. Chrome suggests a 2MB limit[0] for example. The platform itself doesn't have one, and Firefox I believe if memory serves (I can't find the source for this claim atm) is 1 MB effectively, and I don't think Safari is any lower than that either (and may well be more inline with Chrome on this, at 2 MB)
[0]: https://chromium.googlesource.com/chromium/src/+/master/docs...
What are some alternatives?
quickjs-emscripten - Safely execute untrusted Javascript in your Javascript, and execute synchronous code that uses async functions
ungoogled-chromium - Google Chromium, sans integration with Google
TablaM - The practical relational programing language for data-oriented applications
WebKit - Home of the WebKit project, the browser engine used by Safari, Mail, App Store and many other applications on macOS, iOS and Linux.
wasmtime - A fast and secure runtime for WebAssembly
termux-packages - A package build system for Termux.
go - The Go programming language
bromite - Bromite is a Chromium fork with ad blocking and privacy enhancements; take back your browser!
go-wasm-bake - Experimenting with eager evaluation of Go WASM code
brave-browser - Brave browser for Android, iOS, Linux, macOS, Windows.
wagi - Write HTTP handlers in WebAssembly with a minimal amount of work
gecko-dev - Read-only Git mirror of the Mercurial gecko repositories at https://hg.mozilla.org. How to contribute: https://firefox-source-docs.mozilla.org/contributing/contribution_quickref.html