[jdk25u] RFR: 8362282: runtime/logging/StressAsyncUL.java failed with exitValue = 134

[Aleksey Shipilev]

Improves `-Xlog:async` reliability.

Additional testing:
 - [x] Linux x86_64 server fastdebug, `all`
 - [x] Linux x86_64 server fastdebug, `all` with `-Xlog:async`

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

Commit messages:
 - Backport c968a672c034fe533ea5f4ac5efe37ffb76c93e2

Changes: https://git.openjdk.org/jdk25u/pull/254/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=254&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8362282
  Stats: 5 lines in 1 file changed: 2 ins; 2 del; 1 mod
  Patch: https://git.openjdk.org/jdk25u/pull/254.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/254/head:pull/254

PR: https://git.openjdk.org/jdk25u/pull/254