e9af212a11
This is a follow-up CL to https://crrev.com/c/3623542. When updating pointers during a full GC, a page might not be swept already. In such cases there might be invalid objects in free memory. Since these objects might be dead, their maps might have been reclaimed already as well. The previous CL cached the size of invalid objects in order to avoid accessing an invalid object's map. However, as soon as a slot is within an invalid object, we also need to check whether this slot is still a tagged pointer which would require map access. This CL checks marking bits on invalid objects to skip that check on such invalid objects. Bug: v8:12578, chromium:1316289 Change-Id: Ie1d736f897a2994dbed7bfb95ed37732cd3b0882 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3596123 Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> Cr-Commit-Position: refs/heads/main@{#80609} |
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| CODE_OF_CONDUCT.md | ||
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| LICENSE.strongtalk | ||
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V8 JavaScript Engine
V8 is Google's open source JavaScript engine.
V8 implements ECMAScript as specified in ECMA-262.
V8 is written in C++ and is used in Google Chrome, the open source browser from Google.
V8 can run standalone, or can be embedded into any C++ application.
V8 Project page: https://v8.dev/docs
Getting the Code
Checkout depot tools, and run
fetch v8
This will checkout V8 into the directory v8 and fetch all of its dependencies.
To stay up to date, run
git pull origin
gclient sync
For fetching all branches, add the following into your remote
configuration in .git/config:
fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
fetch = +refs/tags/*:refs/tags/*
Contributing
Please follow the instructions mentioned at v8.dev/docs/contribute.