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mlippautz 93e939837d [heap] Remove unswept bytes counter 
This change removes the unswept free bytes counter.

The new approach
- directly decrements allocated memory and capacity before sweeping (using live
  bytes from the marker), and
- adds back capacity during refilling a free list.

This is another pre-work for moving around free lists while keeping the counters
in a sane state.

The previous approach allowed us to nail down how much memory is to-be-swept.
However, there were no users of this as we only used it do decrement it from
allocated memory (which still accounted for dead objects).  If we want to keep
track of unswept free bytes in a space during compaction we can introduce a
separate new concurrent counter for this purpose.

BUG=chromium:524425
LOG=N

Review URL: https://codereview.chromium.org/1380723002

Cr-Commit-Position: refs/heads/master@{#31175}
2015-10-08 10:28:11 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build [swarming] Run unittests together with default tests. 2015-10-06 09:31:49 +00:00
docs [Docs] Fix some nits discovered while converting to Markdown 2015-10-05 14:47:42 +00:00
include Revert of Reland: Introduce a V8_NORETURN macro and use it to make GCC 4.9.2 happy again. (patchset #3 id:40001 of https://codereview.chromium.org/1383053005/ ) 2015-10-08 04:33:41 +00:00
infra Use committer list from chrome-infra-auth group project-v8-committers 2015-08-27 16:10:22 +00:00
samples Rework startup-data-util. 2015-08-14 12:11:46 +00:00
src [heap] Remove unswept bytes counter 2015-10-08 10:28:11 +00:00
test Continuing removing deprecated function from cctest 2015-10-08 09:48:20 +00:00
testing Converted V8 CQ config to proto-format 2015-05-28 15:02:53 +00:00
third_party/binutils Update binutils version. 2015-08-07 08:09:49 +00:00
tools [turbofan] Separate JSInliningHeuristic into own class. 2015-10-07 12:18:32 +00:00
.clang-format Change clang-format config to allow for two empty lines between functions 2013-12-03 10:39:21 +00:00
.gitignore [swarming] Add luci-go's isolate tool, downloaded via runhooks. 2015-10-01 12:11:46 +00:00
.ycm_extra_conf.py [ycm] The YouCompleteMe configuration is not VIM specific. 2015-02-12 07:21:13 +00:00
AUTHORS Don’t smash globals used by the test helper itself. 2015-09-24 21:47:17 +00:00
BUILD.gn [turbofan] Separate JSInliningHeuristic into own class. 2015-10-07 12:18:32 +00:00
ChangeLog Update change log to match roll branch. 2015-05-18 15:03:50 +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. 2015-10-08 09:55:33 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +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 MIPS64: Add big-endian support for mips64. 2015-09-29 17:23:55 +00:00
Makefile.android Reland [android] Migrate more configs to gyp. 2015-06-26 12:04:09 +00:00
Makefile.nacl Use the pnacl-clang toolchain for (P)NaCL builds 2014-10-06 08:10:50 +00:00
OWNERS Update OWNERS file. 2015-07-16 11:37:51 +00:00
PRESUBMIT.py Remove unused function in presubmit script 2015-09-23 10:52:45 +00:00
README.md [Docs] Add information on how to contribute to the README 2015-09-15 07:53:13 +00:00
snapshot_toolchain.gni Split the GN 'snapshot_toolchain' logic out into an include file. 2015-09-22 02:28:40 +00:00
WATCHLISTS Debugger: move implementation to a separate folder. 2015-07-31 11:08:15 +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://code.google.com/p/v8/

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.