359a00bf6f
Reason for revert: mac gc stress failures: https://build.chromium.org/p/client.v8/builders/V8%20Mac%20GC%20Stress/builds/8341 Original issue's description: > [wasm] reuse the first compiled module. > > This change avoids needing to keep around an unused compiled > module. Instead, the result of compiling the wasm bytes is > given to the first instance. The module object and that instance object > point to the same compiled module. Instances are, then, cloned from > the compiled module the module object points to. When an instance is > collected, we make sure that the module object still has a clone > available, and, if the last instance is GC-ed, we also reset the compiled > module so that it does not reference its heap, so that it (==heap) may > be collected. > > This is achieved by linking the clones in a double-linked list and > registering a finalizer for each. When we create an instance, we tie it > in the front of the list, making the module object point to it (O(1)). When > the finalizer is called, we relink the list over the dying object (O(1)). The > costliest operation is finalizing the last instance, since we need to visit > all wasm functions and reset heap references. > > BUG=v8:5316 > > Committed: https://crrev.com/01f5af515728aebe6c5246f4f7dd6c573e8748af > Cr-Commit-Position: refs/heads/master@{#39153} TBR=bradnelson@chromium.org,verwaest@chromium.org,vogelheim@chromium.org,yangguo@chromium.org,mtrofin@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:5316 Review-Url: https://codereview.chromium.org/2306403002 Cr-Commit-Position: refs/heads/master@{#39154} |
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| benchmarks | ||
| build_overrides | ||
| docs | ||
| gni | ||
| gypfiles | ||
| include | ||
| infra | ||
| samples | ||
| src | ||
| test | ||
| testing | ||
| third_party/binutils | ||
| tools | ||
| .clang-format | ||
| .gitignore | ||
| .gn | ||
| .ycm_extra_conf.py | ||
| AUTHORS | ||
| BUILD.gn | ||
| ChangeLog | ||
| CODE_OF_CONDUCT.md | ||
| codereview.settings | ||
| DEPS | ||
| LICENSE | ||
| LICENSE.fdlibm | ||
| LICENSE.strongtalk | ||
| LICENSE.v8 | ||
| LICENSE.valgrind | ||
| Makefile | ||
| Makefile.android | ||
| OWNERS | ||
| PRESUBMIT.py | ||
| README.md | ||
| snapshot_toolchain.gni | ||
| WATCHLISTS | ||
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://github.com/v8/v8/wiki
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 on the V8 wiki.