RFR: 8314679: SA fails to properly attach to JVM after having just detached from a different JVM

Tue Aug 22 23:47:21 UTC 2023

The CDS archive can change memory locations on different runs of the same JVM binary. This exposed a long standing bug in FileMapInfo.java. It was caching addresses that could be different for different JVM processes. As a result, doing an attach, detach, and then another attach to a different JVM process was resulting in various exceptions because the contents of CDS memory was not as expected.

Tested by running all serviceability/sa tests. Also tested with ZGC and generational ZGC.

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Commit messages:
 - Fix issue with relocatable CDS archive

Changes: https://git.openjdk.org/jdk/pull/15395/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15395&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314679
  Stats: 95 lines in 3 files changed: 94 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/15395.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15395/head:pull/15395

PR: https://git.openjdk.org/jdk/pull/15395