RFR: 8337517: Redacted Heap Dumps

[Alan Bateman]

On Wed, 31 Jul 2024 19:10:41 GMT, Henry Lin <duke at openjdk.org> wrote:

> Adds a command line option `-redact` to `jcmd`, `redact` to `jmap` and `-XX:+HeapDumpRedacted` enabling redacted heap dumps. When enabled, the output binary heap dump has zeroes written out in place of the original primitive values in the object fields. There is a new jtreg test `heapDumpRedactedTest.java` that tests that the fields are properly redacted.

The alternative is of course to not burden the VM and heap dumpers with this but instead provide tooling to process a HPROF heap dump to zero the contents of Strings and other fields.

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PR Comment: https://git.openjdk.org/jdk/pull/20409#issuecomment-2262555722