8364781: Re-examine DigitList digits resizing during parsing

[justin-curtis-lu]

This PR changes the DigitList resizing from adding increments of 100 to a doubling resizing approach. This helps with performance of larger String values during DecimalFormat parsing. See the comment on the associated JBS issue for further detail.

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Progress

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Issue

• JDK-8364781: Re-examine DigitList digits resizing during parsing (Bug - P4)

Reviewers

• Chen Liang (@liach - Reviewer)
• Naoto Sato (@naotoj - Reviewer)

Reviewing

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[openjdk]

@justin-curtis-lu This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

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8364781: Re-examine DigitList digits resizing during parsing

Reviewed-by: liach, naoto

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At the time when this comment was updated there had been 129 new commits pushed to the master branch:

• e9e331b: 8365238: 'jfr' feature requires 'services' with 'custom' build variant
• bdb1646: 8364611: (process) Child process SIGPIPE signal disposition should be default
• 23985c2: 8357979: Compile jdk.internal.vm.ci targeting the Boot JDK version
• ... and 126 more: https://git.openjdk.org/jdk/compare/413ac74ecc225ff2cd7a729204a9c7a95dc48458...master

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[mlbridge]

Webrevs

• 01: Full - Incremental (df40560e)
• 00: Full (4361aa02)

[liach]

I think you can use ArraysSupport.newLength(count, 1, count) instead.

[justin-curtis-lu]

Did not know we had that, thanks!

[liach]

Looks right.

[naotoj]

LGTM