8293315: Add back logging for Placeholders

[coleenp]

I lost some information in the logging code for PlaceholderTable that I really want when I converted it to use a ResourceHashtable, so this minor patch adds it back.
Tested locally with -Xlog:class+load+placeholders=trace, and tier1.

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Issue

• JDK-8293315: Add back logging for Placeholders

Reviewers

• Ioi Lam (@iklam - Reviewer)

Reviewing

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[mlbridge]

Webrevs

• 00: Full (4a7f3278)

[iklam]

Looks good and trivial.

[openjdk]

@coleenp 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.

After integration, the commit message for the final commit will be:

8293315: Add back logging for Placeholders

Reviewed-by: iklam

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At the time when this comment was updated there had been 3 new commits pushed to the master branch:

• 0c6094e: 8293188: x86_64: Introduce stubGenerator_x86_64.hpp
• 2baeebb: 8293006: sun/tools/jhsdb/JStackStressTest.java fails with "UnalignedAddressException: 8baadbabe"
• da99e3e: 8289400: Improve com/sun/jdi/TestScaffold error reporting

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[coleenp]

Thanks for the review, Ioi.
/integrate

[openjdk]

Going to push as commit 83a3408.
Since your change was applied there have been 4 commits pushed to the master branch:

• b6477fd: 8293288: bootcycle build failure after JDK-8173605
• 0c6094e: 8293188: x86_64: Introduce stubGenerator_x86_64.hpp
• 2baeebb: 8293006: sun/tools/jhsdb/JStackStressTest.java fails with "UnalignedAddressException: 8baadbabe"
• da99e3e: 8289400: Improve com/sun/jdi/TestScaffold error reporting

Your commit was automatically rebased without conflicts.

[openjdk]

@coleenp Pushed as commit 83a3408.

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