RFR: 8364558: Failure to generate compiler stubs from compiler thread should not crash VM when compilation disabled due to full CodeCache [v2]

[Andrew Dinn]

> This PR avoids bringing down the VM when a code cache allocation for the stubgen compiler blob is requested by the compiler thread and fails because the code cache is full. Instead the VM is allowed to carry on with the compiler disabled.

Andrew Dinn has updated the pull request incrementally with one additional commit since the last revision:

  minimize changed lines and align log messages

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Changes:
  - all: https://git.openjdk.org/jdk/pull/26642/files
  - new: https://git.openjdk.org/jdk/pull/26642/files/5889ce2b..7a28bc7e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26642&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26642&range=00-01

  Stats: 16 lines in 2 files changed: 7 ins; 7 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/26642.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26642/head:pull/26642

PR: https://git.openjdk.org/jdk/pull/26642