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url: always show password for URL instances #12420

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@mscdex mscdex commented Apr 15, 2017

This matches browser behavior.

CI: https://ci.nodejs.org/job/node-test-pull-request/7413/

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • commit message follows commit guidelines
Affected core subsystem(s)
  • url

@mscdex mscdex added the whatwg-url Issues and PRs related to the WHATWG URL implementation. label Apr 15, 2017
@nodejs-github-bot nodejs-github-bot added dont-land-on-v4.x whatwg-url Issues and PRs related to the WHATWG URL implementation. labels Apr 15, 2017
const innerOpts = Object.assign({}, ctx);
if (recurseTimes !== null) {
innerOpts.depth = recurseTimes - 1;
var separator = ', ';
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Is performance the reason for changing const to var?

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Yes, permanent deopt.

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Didn't read commit message, sorry.

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Is there a V8 bug for this? cc @nodejs/v8

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@mscdex mscdex Apr 15, 2017

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@joyeecheung I don't think it's a 'bug' per se, just something that isn't optimized yet in the version of V8 in master.

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I think we might want to add a comment here in case someone feels like replacing those with const again.

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I'm not sure it needs a comment. Many optimizations are made without comments describing why they exist, including prior permanent deopt fixes. Also, the hope is that V8 will (or already has) fix the deopt (perhaps with ignition + turbofan... I don't recall which pipeline the function was being optimized under).

Ideally such permanent deopts would be checked when pushing such code in the first place. Perhaps having a Makefile target that runs the parallel tests with --trace-opt --trace-deopt and greps for /aborted|disabled/ would be helpful in achieving this in an automated way.

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Ideally, I agree - but since it was missed the first time around in mscdex@6b6123c#diff-7fa9474fccb31c3ccef5d728fbd5248bR865 and I don't think performance regressions are run against every small refactoring I think a comment would still be useful in this particular case.

If we can figure how to do it in an automated way that would be great, I don't think contributors are not very familiar with the basic performance tooling like --trace-deopt let alone can understand their output very easily.

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@benjamingr It's not just this one line though. Many times all const/let in the containing function has to be changed before the perm deopt goes away.

As far as checking for permanent deopts, the method I described works well enough:

node --trace-opt --trace-deopt foo.js | grep -iP 'abort|disabled'

If anything shows up, then there is a perm deopt somewhere. The name of the function or variable is included in the output FWIW.

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Then I'm +1 on adding it to the makefile, worst case someone will not understand it and open an issue and we can discuss whether or not it's confusing then, good case - people understand it right off the bat.

@@ -874,32 +871,32 @@ class URLSearchParams {
this[context] = null;
}

[util.inspect.custom](recurseTimes, ctx) {
[util.inspect.custom](depth, opts) {
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I prefer the recurseTimes/ctx wording since that's what's used in util.js.

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jasnell commented Apr 15, 2017

I'm good with this but it may be worthwhile putting the const to var changes in their own commit that can be easily reverted once the optimization issue is resolved in master

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mscdex commented Apr 17, 2017

I might just fold the deopt fixes into #12456 instead...

@mscdex mscdex changed the title url: various changes url: always show password for URL instances Apr 24, 2017
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mscdex commented Apr 24, 2017

Ok, I've removed the deopt change and I guess I'll just forget the variable name changes.... I'll let someone else submit a PR if they want to use consistent names. So now it's just the password change.

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mscdex commented Apr 24, 2017

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Still LGTM.

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This needs a rebase.

This matches browser behavior.
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mscdex commented Apr 25, 2017

jasnell pushed a commit that referenced this pull request Apr 26, 2017
This matches browser behavior.

PR-URL: #12420
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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jasnell commented Apr 26, 2017

Landed in d7ba2a6

@jasnell jasnell closed this Apr 26, 2017
@mscdex mscdex deleted the url-whatwg-changes branch April 26, 2017 16:27
@evanlucas evanlucas mentioned this pull request May 1, 2017
evanlucas pushed a commit that referenced this pull request May 1, 2017
This matches browser behavior.

PR-URL: #12420
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
evanlucas pushed a commit that referenced this pull request May 2, 2017
This matches browser behavior.

PR-URL: #12420
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
evanlucas pushed a commit that referenced this pull request May 2, 2017
This matches browser behavior.

PR-URL: #12420
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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