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littledan 3f366186e9 Revert of Fix async/await memory leak (patchset #5 id:160001 of https://codereview.chromium.org/2348403002/ ) 
Reason for revert:
Still causes issues on bot (sometimes!)

Original issue's description:
> Reland of Fix async/await memory leak (patchset #1 id:1 of https://codereview.chromium.org/2354473002/ )
>
> Reason for revert:
> Relanding with faster-running test
>
> Original issue's description:
> > Revert of Fix async/await memory leak (patchset #5 id:80001 of https://codereview.chromium.org/2334323006/ )
> >
> > Reason for revert:
> > newly introduced test async-await-loop times out: https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/10894/steps/Ignition%20-%20turbofan%20%28flakes%29/logs/async-await-loop
> >
> > Original issue's description:
> > > Fix async/await memory leak
> > >
> > > This patch closes a memory leak in async/await where the desugaring
> > > was creating a situation analagous to that described in v8:5002.
> > > Intermediate Promises were being kept alive, so a long-running loop
> > > would cause linear memory usage on the heap. This patch returns
> > > undefined to the 'then' callback passed into PerformPromiseThen
> > > in order to avoid this hazard. Test expectations are fixed to remove
> > > expecting extraneous events which occurred on Promises that are
> > > now not given unnecessarily complex resolution paths before being
> > > thrown away.
> > >
> > > BUG=v8:5390
> > >
> > > Committed: https://crrev.com/a0ba18e9634c5e2d439033ab61a77cff54f9af35
> > > Cr-Commit-Position: refs/heads/master@{#39479}
> >
> > TBR=adamk@chromium.org,caitp@igalia.com,littledan@chromium.org
> > NOTRY=true
> > BUG=v8:5390
> >
> > Committed: https://crrev.com/196db1999da130019bbf8e3bd65977f840e8afaf
> > Cr-Commit-Position: refs/heads/master@{#39493}
>
> TBR=adamk@chromium.org,caitp@igalia.com,hablich@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> BUG=v8:5390
>
> Committed: https://crrev.com/e51482f01f26e0013e6377e85c4d2c41900e403c
> Cr-Commit-Position: refs/heads/master@{#39508}

TBR=adamk@chromium.org,caitp@igalia.com,hablich@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5390

Review-Url: https://codereview.chromium.org/2348403003
Cr-Commit-Position: refs/heads/master@{#39512}
2016-09-19 21:01:31 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build_overrides [inspector] Build inspector under v8_enable_inspector build flag. 2016-09-06 23:26:35 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni [swarming] Remove hard-coded shared library configs 2016-07-28 07:18:15 +00:00
gypfiles [gn] Switch off gyp in runhooks by default 2016-09-09 14:23:14 +00:00
include [d8] Fix the shared-library build 2016-09-19 12:47:22 +00:00
infra [cq] Temporarily make failing chromium trybot experimental 2016-09-19 08:24:34 +00:00
samples Provide a convenience array buffer allocator 2016-06-29 07:42:40 +00:00
src Revert of Fix async/await memory leak (patchset #5 id:160001 of https://codereview.chromium.org/2348403002/ ) 2016-09-19 21:01:31 +00:00
test Revert of Fix async/await memory leak (patchset #5 id:160001 of https://codereview.chromium.org/2348403002/ ) 2016-09-19 21:01:31 +00:00
testing Use GTEST_LANG_CXX11 in V8 2016-07-25 13:06:42 +00:00
third_party/binutils Update binutils version to match Chromium. 2016-07-08 07:03:29 +00:00
tools Update comment about TODO in verify_source_deps.py 2016-09-19 11:40:59 +00:00
.clang-format [formatting] Remove the formatting requirement for 2 empty lines between declarations. 2016-01-25 09:50:17 +00:00
.gitignore [mb] Copy MB from Chromium repo 2016-09-01 12:20:20 +00:00
.gn Disentangle gyp and gn files 2016-09-14 19:02:41 +00:00
.ycm_extra_conf.py Use C++11 / gnu++11, not 0x 2016-03-22 15:24:43 +00:00
AUTHORS [inspector] Initial import of v8_inspector. 2016-09-01 20:28:33 +00:00
BUILD.gn [d8] Fix the shared-library build 2016-09-19 12:47:22 +00:00
ChangeLog [Release] Update ChangeLog file 2016-02-17 21:29:09 +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 Use v8-reviews@ for review mail, so v8-dev@ is free for dev discussions 2015-09-09 08:14:11 +00:00
DEPS Update V8 DEPS. 2016-09-18 03:28:07 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +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
Makefile Remove NaCl support. 2016-07-27 07:50:31 +00:00
Makefile.android [build] Fix d8-for-Android builds 2016-05-20 12:10:45 +00:00
OWNERS Remove oth from OWNERS 2016-09-05 13:38:25 +00:00
PRESUBMIT.py Fix BUILD.gn files and add presubmit step 2016-09-19 10:59:41 +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 Use clang for snapshot_toolchain by default, except on ChromeOS. 2016-08-23 14:04:27 +00:00
WATCHLISTS Remove oth from v8 WATCHLISTS file. 2016-08-30 08:32:33 +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.