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Clemens Hammacher 231a96bb72 [wasm] Fix deadlock in async compilation 
This fixes a deadlock related to throttling: It can happen that all
background tasks detect that they should not produce more work because
of throttling (!CanAcceptWork()). Reducing the number of running
background tasks is done in a later step (OnBackgroundTaskStopped).
If the finisher task finishes all outstanding units between these two
calls, it will not schedule another background compilation task, but
all background compilation tasks will quit, hence compilation will
never finish.

Fixing this should allow us to reenable the 'wasm-finish-compilation'
test: https://crrev.com/c/999632

R=ahaas@chromium.org

Bug: chromium:824681
Change-Id: I967e4d6b2917d369dd49bb80ce4bef552d10b371
Reviewed-on: https://chromium-review.googlesource.com/1002174
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52483}
2018-04-09 16:42:40 +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
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni Suppress running find_bad_constructs when testing V8 standalone 2018-04-06 13:24:30 +00:00
include Remove redundant WARN_UNUSED_RESULT macro 2018-04-06 16:06:15 +00:00
infra [build] Add MB config for more jumbo builders 2018-04-09 11:27:47 +00:00
samples [sample] fix potential memory leak. 2018-02-21 13:06:18 +00:00
src [wasm] Fix deadlock in async compilation 2018-04-09 16:42:40 +00:00
test [wasm] Remove obsolete {weak_exported_functions} field. 2018-04-09 14:13:52 +00:00
testing Remove dummy files created for rolling googletest. 2018-03-27 05:55:56 +00:00
third_party Roll googletest to 1.8.0+. 2018-03-23 07:54:27 +00:00
tools [wasm] Remove WasmToWasm wrapper vestiges 2018-04-06 14:45:16 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +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
.gitignore [test] Remove obsolete test262 archive extract 2018-03-28 13:52:15 +00:00
.gn [test] Remove obsolete test262 archive extract 2018-03-28 13:52:15 +00:00
.vpython [tools] Add pypiwin32 pacakge to VPython config 2018-03-09 20:33:36 +00:00
.ycm_extra_conf.py [ycm] Switch from gnu++11 to gnu++14 2017-11-27 07:48:21 +00:00
AUTHORS Remove duplicated file listed in BUILD.gn 2018-04-05 18:31:54 +00:00
BUILD.gn [V8] Share windows runtime dlls with src/build 2018-04-09 07:31:15 +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 Update V8 DEPS. 2018-04-08 03:50:50 +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
OWNERS Adding a few more wasm related OWNERS. 2018-03-01 20:19:07 +00:00
PRESUBMIT.py [gyp] remove gyp files. 2018-02-08 20:04:06 +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 Remove v8-x87-ports@ from WATCHLIST 2018-02-26 19:56:21 +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.