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deps: backport e093a04, 09db540 from upstream V8 #6398

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ofrobots
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@ofrobots ofrobots commented Apr 26, 2016 •
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Checklist
  • tests and code linting passes
  • the commit message follows commit guidelines
Affected core subsystem(s)

deps

Description of change

Original commit messages:
v8/v8@e093a04

Rehash and clear deleted entries in weak collections during GC
Otherwise, they'll just keep growing until we run out of memory or hit the FixedArray's maximum capacity.

BUG=v8:4909
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1877233005

Cr-Commit-Position: refs/heads/master@{#35514}

v8/v8@09db540

Reland of Rehash and clear deleted entries in weak collections during GC
BUG=v8:4909
R=hpayer@chromium.org,ulan@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1890123002

Cr-Commit-Position: refs/heads/master@{#35538}

V8-Bug: https://crbug.com/v8/4909
Fixes: #6180
Ref: #6375
R=@nodejs/v8
CI: https://ci.nodejs.org/job/node-test-pull-request/2399/

ofrobots added 2 commits April 26, 2016 06:44
@ofrobots
deps: backport e093a04, 09db540 from upstream V8
3e8d7a7 
Original commit messages:
v8/v8@e093a04
  Rehash and clear deleted entries in weak collections during GC
  Otherwise, they'll just keep growing until we run out of memory or hit the FixedArray's maximum capacity.

  BUG=v8:4909
  R=hpayer@chromium.org
  LOG=n

  Review URL: https://codereview.chromium.org/1877233005

  Cr-Commit-Position: refs/heads/master@{nodejs#35514}

v8/v8@09db540
  Reland of Rehash and clear deleted entries in weak collections during GC
  BUG=v8:4909
  R=hpayer@chromium.org,ulan@chromium.org
  LOG=n

  Review URL: https://codereview.chromium.org/1890123002

  Cr-Commit-Position: refs/heads/master@{nodejs#35538}

V8-Bug: https://crbug.com/v8/4909
Fixes: nodejs#6180
@ofrobots
[SQUASH] fixup needed for backport
5b72b47
@ofrobots ofrobots added v8 engine Issues and PRs related to the V8 dependency. lts-watch-v4.x labels Apr 26, 2016
@indutny
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indutny commented Apr 26, 2016

Rubber-stamp LGTM

@Fishrock123 Fishrock123 modified the milestone: 6.0.0 Apr 26, 2016
bnoordhuis
bnoordhuis reviewed Apr 26, 2016
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deps/v8/src/heap/mark-compact.cc
@@ -2422,6 +2422,13 @@ void MarkCompactCollector::ClearWeakCollections() {
table->RemoveEntry(i);
}
}
// Rehash if more than 25% of the entries are deleted entries.
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More than 50%, I think?

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actually, it's 1/3, but in any case the comment is wrong

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LGTM

@ChALkeR
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ChALkeR commented Apr 26, 2016 •
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Does this solve the testcase at #6375 (comment)?
I am not able to test that atm.
Note: this is just a question, it should not hold this PR.

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jasnell commented Apr 26, 2016

Should this go into v6?

@ChALkeR
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ChALkeR commented Apr 26, 2016

@jasnell I think that's the reason for backporting, isn't it?

@ChALkeR ChALkeR added the memory Issues and PRs related to the memory management or memory footprint. label Apr 26, 2016
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This can go in a patch level, no need to hold the release for this.
On Apr 26, 2016 8:52 AM, "Сковорода Никита Андреевич" <
notifications@github.com> wrote:

@jasnell https://github.com/jasnell I think that's the reason for
backporting, isn't it?

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#6398 (comment)

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jasnell commented Apr 26, 2016

Ok. LGTM btw

jeisinger
jeisinger reviewed Apr 27, 2016
View reviewed changes
deps/v8/src/heap/mark-compact.cc
if ((table->NumberOfDeletedElements() << kJSWeakCollectionLoadFactorExp) >
table->NumberOfElements()) {
HandleScope scope(heap()->isolate());
table->Rehash(heap()->isolate()->factory()->undefined_value());
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@ofrobots this is the wrong CL, you should only merge the "Reland" CL.

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@jeisinger: Applying the two patches from the 'Reland CL' (https://codereview.chromium.org/1890123002/#ps20001) produces the same patch as 3e8d7a7. Maybe I am missing something?

/cc @matthewloring re: #7883

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ChALkeR commented Apr 27, 2016

Btw, @jeisinger, @natorion, what about back-porting this to v8 5.0.x?

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Could you please use the process outlined in https://github.com/v8/v8/wiki/Merging%20&%20Patching ?

@ofrobots
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ofrobots commented May 4, 2016

Superceded by #6572. I will open a separate PR to backport the relevant commits to v4.x.

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Upon verification, the upstream fixes are not sufficient for solving the original issue in #6180. Closing this PR. Let's wait until https://crbug.com/v8/4909 gets fully resolved.

@ofrobots ofrobots closed this May 10, 2016
@ChALkeR ChALkeR mentioned this pull request May 10, 2016
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@matthewloring matthewloring mentioned this pull request Jul 12, 2016
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@matthewloring matthewloring mentioned this pull request Jul 27, 2016
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fhinkel added a commit to v8/node that referenced this pull request Jun 28, 2017
@fhinkel
[HACK] test: deactivate failing tests
d9ffec7 
See Build nodejs#6398.
@ofrobots ofrobots deleted the fix-6180-master branch July 21, 2017 14:27
abernix added a commit to abernix/node that referenced this pull request Aug 14, 2017
@abernix
deps: cherry-pick 09db540,686558d from V8 upstream
5f18fb2 
Original commit messages:
v8/v8@09db540
  Reland of Rehash and clear deleted entries in weak collections during GC

  BUG=v8:4909
  R=hpayer@chromium.org,ulan@chromium.org
  LOG=n

  Review URL: https://codereview.chromium.org/1890123002

  Cr-Commit-Position: refs/heads/master@{nodejs#35538}

v8/v8@686558d
  Fix comment about when we rehash ObjectHashTables before growing them

  R=ulan@chromium.org
  BUG=

  Review-Url: https://codereview.chromium.org/1918403003
  Cr-Commit-Position: refs/heads/master@{nodejs#35853}

Refs: https://crbug.com/v8/4909
Refs: nodejs#6180
Refs: nodejs#7689
Refs: nodejs#6398
Fixes: nodejs#14228
MylesBorins pushed a commit that referenced this pull request Aug 16, 2017
@abernix @MylesBorins
deps: cherry-pick 09db540,686558d from V8 upstream
5d7f68a 
Original commit messages:
v8/v8@09db540
  Reland of Rehash and clear deleted entries in weak collections during GC

  BUG=v8:4909
  R=hpayer@chromium.org,ulan@chromium.org
  LOG=n

  Review URL: https://codereview.chromium.org/1890123002

  Cr-Commit-Position: refs/heads/master@{#35538}

v8/v8@686558d
  Fix comment about when we rehash ObjectHashTables before growing them

  R=ulan@chromium.org
  BUG=

  Review-Url: https://codereview.chromium.org/1918403003
  Cr-Commit-Position: refs/heads/master@{#35853}

Refs: https://crbug.com/v8/4909
Refs: #6180
Refs: #7689
Refs: #6398
Fixes: #14228

PR-URL: #14829
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
MylesBorins pushed a commit that referenced this pull request Oct 25, 2017
@abernix @MylesBorins
deps: cherry-pick 09db540,686558d from V8 upstream
71f9cdf 
Original commit messages:
v8/v8@09db540
  Reland of Rehash and clear deleted entries in weak collections during GC

  BUG=v8:4909
  R=hpayer@chromium.org,ulan@chromium.org
  LOG=n

  Review URL: https://codereview.chromium.org/1890123002

  Cr-Commit-Position: refs/heads/master@{#35538}

v8/v8@686558d
  Fix comment about when we rehash ObjectHashTables before growing them

  R=ulan@chromium.org
  BUG=

  Review-Url: https://codereview.chromium.org/1918403003
  Cr-Commit-Position: refs/heads/master@{#35853}

Refs: https://crbug.com/v8/4909
Refs: #6180
Refs: #7689
Refs: #6398
Fixes: #14228

PR-URL: #14829
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
gibfahn pushed a commit to ibmruntimes/node that referenced this pull request Nov 24, 2017
@abernix @gibfahn
deps: cherry-pick 09db540,686558d from V8 upstream
b77def2 
Original commit messages:
v8/v8@09db540
  Reland of Rehash and clear deleted entries in weak collections during GC

  BUG=v8:4909
  R=hpayer@chromium.org,ulan@chromium.org
  LOG=n

  Review URL: https://codereview.chromium.org/1890123002

  Cr-Commit-Position: refs/heads/master@{#35538}

v8/v8@686558d
  Fix comment about when we rehash ObjectHashTables before growing them

  R=ulan@chromium.org
  BUG=

  Review-Url: https://codereview.chromium.org/1918403003
  Cr-Commit-Position: refs/heads/master@{#35853}

Refs: https://crbug.com/v8/4909
Refs: nodejs/node#6180
Refs: nodejs/node#7689
Refs: nodejs/node#6398
Fixes: nodejs/node#14228

PR-URL: nodejs/node#14829
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
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Memory leak in simple test case involving WeakSet
9 participants
@ofrobots @indutny @bnoordhuis @ChALkeR @jasnell @natorion @jeisinger @MylesBorins @Fishrock123