This change simplifies the code that grows the jmethodID cache in InstanceKlass. Instead of lazily, when there's a rare request for a jmethodID for an obsolete method, the jmethodID cache is grown during the RedefineClasses safepoint. The InstanceKlass's jmethodID cache is lazily allocated when there's a jmethodID allocated, so not every InstanceKlass has a cache, but the growth now only happens in a safepoint. This code will become racy with the potential change for deallocating jmethodIDs.
Tested with tier1-4, vmTestbase/nsk/jvmti java/lang/instrument tests (in case they're not in tier1-4). ------------- Commit messages: - Add Safepoint assert, don't use order accessors because they're not needed. - 8313332: Simplify lazy jmethodID cache in InstanceKlass Changes: https://git.openjdk.org/jdk/pull/18549/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18549&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8313332 Stats: 222 lines in 7 files changed: 41 ins; 144 del; 37 mod Patch: https://git.openjdk.org/jdk/pull/18549.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/18549/head:pull/18549 PR: https://git.openjdk.org/jdk/pull/18549
