Class loading can happen on different threads, but HotSwap agent is not ready to this - classCount variable is used without any synchronization. The fix adds synchronization for ClassFileLoadHook.
------------- Commit messages: - Added synchronization for ClassFileLoadHook callback Changes: https://git.openjdk.java.net/jdk/pull/3889/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3889&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8262092 Stats: 35 lines in 1 file changed: 22 ins; 7 del; 6 mod Patch: https://git.openjdk.java.net/jdk/pull/3889.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/3889/head:pull/3889 PR: https://git.openjdk.java.net/jdk/pull/3889
