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Ross McIlroy dc204cc6e7 Reland "[Compile] Refactor BackgroundCompileTask to enable its use by CompilerDispatcher" 
This is a reland of 31228a69c3

TBR=yangguo@chromium.org,verwaest@chromium.org

Original change's description:
> [Compile] Refactor BackgroundCompileTask to enable its use by CompilerDispatcher
>
> Splits background compilation data out of ScriptStreamingData and into
> BackgroundCompileTask. Also makes BackgroundCompileTask no longer a sub-class
> of ScriptStreamingTask, and instead have ScriptStreamingTask delegate to a
> BackgroundCompileTask.
>
> As part of this change, we now create the CharacterStream on the main thread,
> and therefore have to set the (thread-local) runtime_call_stats on the already
> created CharacterStream when the BackgroundCompileTask is run on the background
> thread. As such, changes to CharacterStream were needed to feed the
> runtime_call_stats through appropriately.
>
> Deprecates Source::GetCachedData and StreamedSource::GetCachedData since they are
> no longer used, and the streamed source never has cached data (streaming is
> suppressed if cached data is available). Also removes Utf8ChunkedStream which
> is dead code.
>
> BUG=v8:8041, v8:8015
> TBR=yangguo@chromium.org
>
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
> Change-Id: Ifcc723ebf930a1dc01135fcb70929d6168471cb3
> Reviewed-on: https://chromium-review.googlesource.com/1236353
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#56182}

Bug: v8:8041, v8:8015
Change-Id: Ied5132c537d4c25c6e355f289c2a9cc1f8ff98e9
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/1242097
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56201}
2018-09-25 11:24:14 +00:00
benchmarks Fix common misspellings 2017-08-02 09:35:28 +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 [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni Disable multi_snapshots by default 2018-06-28 10:02:12 +00:00
include Reland "[Compile] Refactor BackgroundCompileTask to enable its use by CompilerDispatcher" 2018-09-25 11:24:14 +00:00
infra [tools] Only apply android_unstripped_runtime_outputs on Android where it is defined 2018-09-21 17:48:23 +00:00
samples Add a sample that uses the JS API to create wasm 2018-06-07 23:43:38 +00:00
src Reland "[Compile] Refactor BackgroundCompileTask to enable its use by CompilerDispatcher" 2018-09-25 11:24:14 +00:00
test Reland "[Compile] Refactor BackgroundCompileTask to enable its use by CompilerDispatcher" 2018-09-25 11:24:14 +00:00
testing Remove dummy files created for rolling googletest. 2018-03-27 05:55:56 +00:00
third_party [torque] Improve formatting in format-torque 2018-09-24 10:08:00 +00:00
tools [tools] Add build folder auto detection to run-clang-tidy 2018-09-25 08:57:55 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.clang-tidy Add a tool/script to run clang-tidy over V8. 2018-09-11 12:01:09 +00:00
.editorconfig Add .editorconfig 2017-07-28 13:39:24 +00:00
.git-blame-ignore-revs [build] Add DEPS formatting to hyper-blame 2017-10-09 14:08:45 +00:00
.gitattributes .gitattributes: Mark minified emscripten js files as -diff 2018-09-19 16:27:10 +00:00
.gitignore stop depsing in gyp 2018-09-03 14:13:18 +00:00
.gn [test] Remove obsolete test262 archive extract 2018-03-28 13:52:15 +00:00
.vpython [tools] Add VPython config for callstats.py 2018-08-14 10:15:46 +00:00
.ycm_extra_conf.py [ycm] Switch from gnu++11 to gnu++14 2017-11-27 07:48:21 +00:00
AUTHORS [Intl] Rename dayperiod to dayPeriod 2018-09-14 17:04:03 +00:00
BUILD.gn [objects.h splitting] Move BuiltinFunctionId 2018-09-25 11:01:33 +00:00
ChangeLog [tools] Merge ChangeLog from latest release 2017-12-19 12:30:56 +00:00
CODE_OF_CONDUCT.md Explicitly state that the Chromium Code of Conduct also applies to V8 2016-03-02 09:51:24 +00:00
codereview.settings Make Gerrit the default code review for V8 2017-06-30 17:37:37 +00:00
DEPS [wasm] Update spec tests 2018-09-25 08:36:32 +00:00
LICENSE Add antlr4 runtime library to support Torque 2018-04-10 10:01:01 +00:00
LICENSE.fdlibm Add LICENSE.fdlibm for all the fdlibm imported sources. 2016-06-09 07:17:03 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.valgrind Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
OWNERS Update OWNERS files. 2018-07-17 07:56:16 +00:00
PRESUBMIT.py Add autoroller task account into bot whitelist for author check 2018-06-06 14:40:09 +00:00
README.md [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
snapshot_toolchain.gni MIPS[64]: Generate snapshots on MIPS big-endian targets 2017-11-24 19:00:32 +00:00
WATCHLISTS Make my watchlists easier to filter 2018-08-30 15:28:02 +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.