[lworld] RFR: 8362252: [lworld] Possible synchronization issue in jdk/internal/jimage/ImageReader.java [v2]

[David Beaumont]

> Tidying up syncrhonization around shared image.

David Beaumont has updated the pull request incrementally with one additional commit since the last revision:

  tweak error message

-------------

Changes:
  - all: https://git.openjdk.org/valhalla/pull/1828/files
  - new: https://git.openjdk.org/valhalla/pull/1828/files/77d9b300..a535e672

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1828&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1828&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/valhalla/pull/1828.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1828/head:pull/1828

PR: https://git.openjdk.org/valhalla/pull/1828