RFR: Loom support for RedefineClasses

Tue May 4 17:34:13 UTC 2021

Use _marking_cycle to determine whether a Method* is on the heap.
This patch includes the patches for https://github.com/openjdk/jdk/pull/3852 and https://git.openjdk.java.net/jdk/pull/3861 which are going to be pushed to mainline.

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Commit messages:
 - Add test to explicitly test unmounting redefined old methods.
 - remove printfs
 - Loom support for RedefineClasses.

Changes: https://git.openjdk.java.net/loom/pull/38/files
 Webrev: https://webrevs.openjdk.java.net/?repo=loom&pr=38&range=00
  Stats: 323 lines in 16 files changed: 235 ins; 68 del; 20 mod
  Patch: https://git.openjdk.java.net/loom/pull/38.diff
  Fetch: git fetch https://git.openjdk.java.net/loom pull/38/head:pull/38

PR: https://git.openjdk.java.net/loom/pull/38