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Zhang, Shiyu 0b812b721b Reland "Support Intel VTune ITT API" 
This is a reland of 5f5b4b0407

Original change's description:
> Support Intel VTune ITT API
> 
> Add VTune domain support extension to use VTune Domain/Task API and
> tagging trace data for particular JS code block.
> 
> How to use:
> 1. Set `"checkout_ittapi" = True` in the custom_vars section of .gclient
> file to download intel/ittapi by 'gclient sync'
> 2. Build d8 with gn build flag 'v8_enable_vtunetracemark = true'
> 3. Run d8 with flag '--enable-vtune-domain-support'
> 
> The Vtune Domain/Task API can be invoked from JS to mark JS code block.
> You can mark the start of a JS task by
>     vtunedomainmark(domain_name, task_name, "start")
> and the end of a task by
>     vtunedomainmark(domain_name, task_name, "end")
> Tasks can nest.
> 
> The VTune API (ittapi) is integrated as an external third party library
> while the v8_vtune_jit also relies on the VTune ittapi. We have another
> patch almost ready which refactors the v8_vtune_jit related code to
> depend on the third_party/ittapi. We will submit the refactored v8_vtune_jit
> code after this patch stabilized and landed.
> 
> 
> Contributed by fanchen.kong@intel.com
> 
> Change-Id: I0ecc9dd4e1ea52545f1b6932fcdadfa7c1a6d2b2
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1938490
> Commit-Queue: Shiyu Zhang <shiyu.zhang@intel.com>
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#65409}

Change-Id: I563aa70fa2b8abe34c981af47aa7220cfc2a7edb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1963511
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65478}
2019-12-17 13:34:36 +00:00
..
mb Reland "Support Intel VTune ITT API" 2019-12-17 13:34:36 +00:00
testing [test] Use Fuchsia test runner for unittests 2019-12-05 14:22:01 +00:00
OWNERS Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
README.md /infra-config directory 2015-06-01 16:19:49 +00:00

README.md

This directory contains infra-specific files.