4ad20bff97
Conceptually, a full GC cycle completes when the sweeping phase is finished. As sweeping is performed concurrently, this happens after Heap::CollectGarbage has returned and, at the latest, before the next full GC cycle begins. However, an arbitrary number of young GC cycles may happen in the meantime. Tracing information for the sweeping phase must be added to the corresponding full GC cycle event. Until now, this was not done correctly: this information was added to the GCTracer's current event and could thus be attributed to a subsequent young or full GC cycle. This CL introduces methods GCTracer::(Start|Stop)Cycle to delimit a cycle (still allowing for full GC cycles to be interrupted by young GC cycles). These methods are different from (Start|Stop)ObservablePause, which delimit the observable pause of each GC. The events of "pending" full GC cycles are kept until they are properly amended and reported, when the sweeping phase is finished. Bug: chromium:1154636 Change-Id: I2fbc65d4807c78656d4abc8c451043f6f86211b1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3404733 Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Omer Katz <omerkatz@chromium.org> Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org> Cr-Commit-Position: refs/heads/main@{#78905} |
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| CODE_OF_CONDUCT.md | ||
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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.