8365782: Remove unnecessary inclusion of <stdlib.h> in jfrOSInterface.cpp

[dev-jonghoonpark]

related jira issue: https://bugs.openjdk.org/browse/JDK-8365782

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Changes

As described in the issue, I have removed the unnecessary inclusion of stdlib.h.

This was first discussed in this comment.

As noted in the discussion, generate_environment_variables_events also appears to be unimplemented, so it has been removed as well.

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Verification

• Checked that no functions from stdlib.h are called in the file.
• Checked that the generate_environment_variables_events function is not implemented anywhere in the codebase.
• Ran the tier1 tests after the changes and confirmed that there were no issues.

Please let me know if there are any additional or more appropriate verification steps I should perform.

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8365782: Remove unnecessary inclusion of <stdlib.h> in jfrOSInterface.cpp (Enhancement - P4)

Reviewers

• Albert Mingkun Yang (@albertnetymk - Reviewer)
• Thomas Schatzl (@tschatzl - Reviewer)

Reviewing

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Checkout this PR locally:
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$ git checkout pull/27639

Update a local copy of the PR:
$ git checkout pull/27639
$ git pull https://git.openjdk.org/jdk.git pull/27639/head

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Checkout this PR locally:
$ git pr checkout 27639

View PR using the GUI difftool:
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Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/27639.diff

Using Webrev

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8365782: Remove unnecessary inclusion of <stdlib.h> in jfrOSInterface.cpp

Reviewed-by: ayang, tschatzl

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At the time when this comment was updated there had been 8 new commits pushed to the master branch:

• 2c114d6: 8367899: compiler/c2/gvn/TestBitCompressValueTransform.java intermittent timed out
• baf8bc5: 8369038: Parallel: Use NMethodMarkingScope and ThreadsClaimTokenScope in psParallelCompact
• 59e8743: 8368753: IGV: improve CFG view of difference graphs
• ... and 5 more: https://git.openjdk.org/jdk/compare/f740cd2aad43a008da1ed1ff15ebe2c790f893a0...master

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Webrevs

• 00: Full (9687a4bc)

[dev-jonghoonpark]

/integrate

[openjdk]

@dev-jonghoonpark
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