RFR: 8337517: Redacted Heap Dumps

[Andrey Turbanov]

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.

test/hotspot/jtreg/serviceability/dcmd/gc/HeapDumpRedactedTest.java line 100:

> 98: 
> 99:         //static field
> 100:         JavaThing staticInt =  testClass.getStaticField("staticInt");

Suggestion:

        JavaThing staticInt = testClass.getStaticField("staticInt");

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PR Review Comment: https://git.openjdk.org/jdk/pull/20409#discussion_r1699665859