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build,src: add Intel Vtune profiling support

Rodrigo Muino Tomonari requested to merge github/fork/cdai2/v4.x-staging into v4.x-staging

Pull Request check-list

Please make sure to review and check all of these items:

  • Does make -j8 test (UNIX) or vcbuild test nosign (Windows) pass with this change (including linting)?
  • Is the commit message formatted according to CONTRIBUTING.md?
  • If this change fixes a bug (or a performance problem), is a regression test (or a benchmark) included?
  • Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

NOTE: these things are not required to open a PR and can be done afterwards / while the PR is open.

Affected core subsystem(s)

Please provide affected core subsystem(s) (like buffer, cluster, crypto, etc)

Description of change

Please provide a description of the change here.

This feature supports the Intel Vtune profiling support for JITted JavaScript on IA32 / X64 / X32 platform. The advantage of this profiling is that the user / developer of NodeJS application can get the detailed profiling information for every line of the JavaScript source code. This information will be very useful for the owner to optimize their applications.

This feature is a compile-time option. For windows platform, the user needs to pass the following parameter to vcbuild.bat: "enable-vtune"

For other OS, the user needs to pass the following parameter to ./configure command: "--enable-vtune-profiling"

PR-URL: https://github.com/nodejs/node/pull/3785 Reviewed-By: Ben Noordhuis info@bnoordhuis.nl

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