RFR: 8324995: Shenandoah: Skip to full gc for humongous allocation failures [v3]

[William Kemper]

> Shenandoah degenerated cycles do not compact regions. When a humongous allocation fails, it is likely due to fragmentation which is better addressed by a full gc.

William Kemper has updated the pull request incrementally with one additional commit since the last revision:

  Fix typo in comment

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Changes:
  - all: https://git.openjdk.org/jdk/pull/17638/files
  - new: https://git.openjdk.org/jdk/pull/17638/files/79c6f3b5..697066c8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17638&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17638&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17638.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17638/head:pull/17638

PR: https://git.openjdk.org/jdk/pull/17638