AuroraMiddleware/v8
1
0
Fork 0
Code Issues 2 Pull Requests Releases Wiki Activity
55,096 Commits 1 Branch 0 Tags 839 MiB
C++ 67.6%
JavaScript 30.1%
Python 1.2%
C 0.3%
TypeScript 0.3%
Other 0.4%
ab55cc736f
Go to file
Benedikt Meurer ab55cc736f [turbofan] Introduce V8.TurboFan timed histogram counters. 
This adds new timed histograms to measure the time that TurboFan spends
on various compilation phases on a per function bases. This includes the
following new counters:

- V8.TurboFanOptimizePrepare
  Time spent in the preparation phase of TurboFan optimization. Recorded
  on each regular optimization of a function.
- V8.TurboFanOptimizeExecute
  Time spent in the execution phase of TurboFan optimization. Recorded on
  each regular optimization of a function.
- V8.TurboFanOptimizeFinalize
  Time spent in the finalization phase of TurboFan optimization. Recorded
  on each regular optimization of a function.
- V8.TurboFanOptimizeTotalForeground
  Total time spent on the main thread during TurboFan optimization.
  Recorded on each regular optimization of a function.
- V8.TurboFanOptimizeTotalBackground
  Total time spent on a background thread during TurboFan optimization.
  Recorded on each regular optimization of a function.
- V8.TurboFanOptimizeTotalTime
  Total time from starting optimizing to installing the code object.
  Recorded on each regular optimization of a function.
- V8.TurboFanOptimizeForOnStackReplacementPrepare
  Time spent in the preparation phase of TurboFan optimization for On
  Stack Replacement (OSR). Recorded on each optimization  for on-stack
  replacement of a function.
- V8.TurboFanOptimizeForOnStackReplacementExecute
  Time spent in the execution phase of TurboFan optimization for On Stack
  Replacement (OSR). Recorded on each optimization  for on-stack replacement
  of a function.
- V8.TurboFanOptimizeForOnStackReplacementFinalize
  Time spent in the finalization phase of TurboFan optimization for On Stack
  Replacement (OSR). Recorded on each optimization  for on-stack replacement
  of a function.
- V8.TurboFanOptimizeForOnStackReplacementTotalTime
  Total time from starting optimizing for On Stack Replacement (OSR) to
  installing the code object. Recorded on each optimization for on-stack
  replacement of a function.

This should give us a good overview and guide/validate future work on
the concurrent optimization pipeline.

Bug: v8:7790, v8:9074
Change-Id: I96573cd1da472684d06624b7573e4afd6efca99c
Doc: http://doc/1umgFxjLQ9p22lVS_BdhmAlo1o9xnxnWlhVi_HMWNktM
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1547864
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60604}
2019-04-03 14:26:10 +00:00
benchmarks [test] Ensure random generator in JSTests does not use float arithmetic 2018-12-17 10:05:08 +00:00
build_overrides [tracing] Add build config for Perfetto behind a flag 2019-03-28 09:26:52 +00:00
custom_deps [build] Add common directory for custom deps 2018-06-08 19:23:02 +00:00
docs [docs] Change links from old wiki to v8.dev 2019-03-07 12:13:30 +00:00
gni Revert "Reland^2 "[build] disable C++ optimization for mksnapshot code."" 2019-04-02 18:56:42 +00:00
include [cpu-profiler] Add SourceType field to CpuProfileNode 2019-04-03 10:35:03 +00:00
infra Reland "[ptr-compr][x64] Temporarily enable pointer compression on x64" 2019-04-03 07:27:03 +00:00
samples Add a sample that uses the JS API to create wasm 2018-06-07 23:43:38 +00:00
src [turbofan] Introduce V8.TurboFan timed histogram counters. 2019-04-03 14:26:10 +00:00
test [cleanup] Replace underscore by minus in d8 flags 2019-04-03 12:32:08 +00:00
testing Remove dummy files created for rolling googletest. 2018-03-27 05:55:56 +00:00
third_party [Builtins] Make it harder to store signalling NaNs in Torque/CSA 2019-03-26 10:22:50 +00:00
tools [cleanup] Replace underscore by minus in d8 flags 2019-04-03 12:32:08 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.clang-tidy [tool] Remove unfixed clang-tidy warnings to ease use. 2018-10-26 07:40:32 +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 Add .ccls-cache to .gitignore 2019-02-26 10:32:45 +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 [ycm] Switch from gnu++11 to gnu++14 2017-11-27 07:48:21 +00:00
AUTHORS Use inherited ctors for MacroAssembler and TurboAssembler 2019-03-08 09:31:30 +00:00
BUILD.gn [wasm][gc] Make import wrapper cache keep WasmCode alive 2019-04-03 09:55:53 +00:00
ChangeLog [release] Merge ChangeLog back to master 2018-12-07 15:41:59 +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. 2019-04-03 11:41:06 +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 [owners] Add szuend@chromium.org to top level owners 2019-03-18 09:37:52 +00:00
PRESUBMIT.py Revert "[torque] Temporarily disable torque format check to pass presubmit" 2019-02-20 14:07:17 +00:00
README.md [docs] Change links from old wiki to v8.dev 2019-03-07 12:13:30 +00:00
snapshot_toolchain.gni Make win/cross build work better when targeting arm64 on macOS hosts. 2019-03-22 18:30:23 +00:00
WATCHLISTS Update WATCHLIST wrt yangguo 2018-11-23 08:29:12 +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://v8.dev/docs

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 at v8.dev/docs/contribute.