Another small step in the multi-release/multi-year effort to remove cruft from Thread/ThreadGroup.
java.lang.ThreadGroup.allowThreadSuspension(boolean) dates from JDK 1.1 and the Classic VM. The method controlled whether threads were suspended when the GC failed. It appears to have interacted with a callback mechanism that could potentially free memory, allowing the GC to retry. The method was never specified . The method was deprecated and changed to do nothing in JDK 1.2. It was deprecated for removal in Java 14. A corpus analysis of 30M classes in 130k artifacts found 0 usages of this method. It is time to finally remove this method. The compatibility impact should be negligible. Joe, Stuart and I discussed briefly and think early in JDK 21 is a good time to do this. ------------- Commit messages: - Remove allowThreadSuspension Changes: https://git.openjdk.org/jdk/pull/11373/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11373&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8297295 Stats: 24 lines in 2 files changed: 0 ins; 24 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/11373.diff Fetch: git fetch https://git.openjdk.org/jdk pull/11373/head:pull/11373 PR: https://git.openjdk.org/jdk/pull/11373
