RFR: 8304074: [JMX] Add an approximation of total bytes allocated on the Java heap by the JVM [v24]

[David Holmes]

On Wed, 24 May 2023 16:36:05 GMT, Paul Hohensee <phh at openjdk.org> wrote:

>> Paul Hohensee has updated the pull request incrementally with 63 additional commits since the last revision:
>> 
>>  - 8304074: Change UnsupportedOperationException in javadoc comment to {@code UnsupportedOperationException}
>>  - 8306507: [linux] Print number of memory mappings in error reports
>>    
>>    Reviewed-by: adinn, sgehwolf
>>  - 8300086: Replace NULL with nullptr in share/c1/
>>    
>>    Reviewed-by: thartmann, chagedorn
>>  - 8308465: Reduce memory accesses in AArch64 MD5 intrinsic
>>    
>>    Reviewed-by: aph, phh
>>  - 8302218: CHeapBitMap::free frees with incorrect size
>>    
>>    Reviewed-by: aboldtch, iklam, tschatzl
>>  - 8308388: Update description of SourceVersion.RELEASE_21
>>    
>>    Reviewed-by: iris
>>  - 8307190: Refactor ref_at methods in Constant Pool
>>    
>>    Reviewed-by: coleenp, iklam
>>  - 8308458: Windows build failure with disassembler.cpp(792): warning C4267: '=': conversion from 'size_t' to 'int'
>>    
>>    Reviewed-by: jiefu
>>  - 8308034: Some CDS tests need to use @requires vm.flagless
>>    
>>    Reviewed-by: iklam
>>  - 8307573: Implementation of JEP 449: Deprecate the Windows 32-bit x86 Port for Removal
>>    
>>    Reviewed-by: erikj
>>  - ... and 53 more: https://git.openjdk.org/jdk/compare/7ee35da0...638756de
>
> Yes, it seems to have happened when I did a merge of this branch with jdk master, which latter must have been in a strange state. Unfortunately, git merge didn't complain at all, so I didn't check before pushing.

@phohensee not clear if you saw my comment a couple of days ago about why the monotonic increasing check in the test can't work.

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PR Comment: https://git.openjdk.org/jdk/pull/13814#issuecomment-1562390740