AuroraMiddleware/v8
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Stephan Herhut b344f31cde [wasm] Commit code space eagerly when profiling 
Under normal execution, we commit code space in page chunks as we
need it. However, this confuses linux perf, as it generates mmap
events in the trace that seem to override the synthetic ones that
are inserted by perf inject.

Instead, when profiling with perf, we now commit the maximum code
space size upfront, leading to a single mmap event early on. While
this significantly increases memory use, it should not impact
profiling of running wasm code.

Bug: v8:8462
Change-Id: I078e9e486fe4ddecdea0b58543cc6bc5873cdfee
Reviewed-on: https://chromium-review.googlesource.com/c/1340279
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57577}
2018-11-16 15:38:53 +00:00
benchmarks Reland: [builtins] Implement Array.prototype.slice in Torque 2018-10-19 21:27:19 +00:00
build_overrides [ndk] Change android ndk root for v8 2018-01-11 08:10:33 +00:00
custom_deps [build] Add common directory for custom deps 2018-06-08 19:23:02 +00:00
docs
gni [build] disable asan on Windows for Torque 2018-10-10 11:47:40 +00:00
include [api] Introduce Object::New() pendant of Object.create(). 2018-11-16 12:15:00 +00:00
infra [test] Use even less parallelism to prevent OOMs on ODROIDs 2018-11-14 09:07:35 +00:00
samples Add a sample that uses the JS API to create wasm 2018-06-07 23:43:38 +00:00
src [wasm] Commit code space eagerly when profiling 2018-11-16 15:38:53 +00:00
test [bigint] Make competing read/write operations on bitfield atomic. 2018-11-16 15:01:08 +00:00
testing Remove dummy files created for rolling googletest. 2018-03-27 05:55:56 +00:00
third_party Update V8 DEPS. 2018-11-14 20:08:33 +00:00
tools Revert "[regexp] Introduce species constructor protector for regexps." 2018-11-16 12:46:18 +00:00
.clang-format
.clang-tidy [tool] Remove unfixed clang-tidy warnings to ease use. 2018-10-26 07:40:32 +00:00
.editorconfig
.git-blame-ignore-revs
.gitattributes .gitattributes: Mark minified emscripten js files as -diff 2018-09-19 16:27:10 +00:00
.gitignore Ignore .torquelint-cache 2018-10-24 10:24:11 +00:00
.gn [test] Remove obsolete test262 archive extract 2018-03-28 13:52:15 +00:00
.vpython [tools] Correctly identify and report test crashes and infra failures 2018-10-30 15:05:40 +00:00
.ycm_extra_conf.py
AUTHORS [typedarray] Use fast path for Float32Array.from(float_64_array) and similar 2018-10-26 09:47:46 +00:00
BUILD.gn [builtins] Pull EmbeddedData and InstructionStream into one file 2018-11-16 09:35:00 +00:00
ChangeLog [tools] Merge ChangeLog from latest release 2017-12-19 12:30:56 +00:00
CODE_OF_CONDUCT.md
codereview.settings
DEPS Update V8 DEPS. 2018-11-16 09:33:55 +00:00
LICENSE Add antlr4 runtime library to support Torque 2018-04-10 10:01:01 +00:00
LICENSE.fdlibm
LICENSE.strongtalk
LICENSE.v8
LICENSE.valgrind
OWNERS Reduce wasm OWNERS to current team members 2018-10-15 14:47:49 +00:00
PRESUBMIT.py [tools] Correctly identify and report test crashes and infra failures 2018-10-30 15:05:40 +00:00
README.md
snapshot_toolchain.gni Reland "Add Windows ARM64 ABI support to V8" 2018-10-24 19:46:36 +00:00
WATCHLISTS [watchlist] Add csa and torque watchlists and add myself 2018-11-15 10:01:08 +00:00

README.md

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.