On Sun, 6 Nov 2022 23:09:54 GMT, Coleen Phillimore <cole...@openjdk.org> wrote:
>> This change adds an option **EnableWaitForParallelLoad** to enable the >> legacy behavior where the VM will manage synchronization for multiple >> threads loading the same class using a non-parallel capable class loader >> that have released the class loader lock. The VM will break the class >> loader lock for parallel threads trying to load the class, and wait for the >> first thread that initiated loading the class to complete. The subsequent >> threads will use the result of the first thread, rather than get a >> LinkageError: duplicate class definition for loading the class without >> synchronization. >> Releasing the class loader lock was a common workaround for class loaders >> that used a non-hierarchical delegation scheme to avoid deadlock, before >> parallel capable class loading was added. >> https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html#registerAsParallelCapable() >> >> Tested with tier1-6 and internal applications. > > Coleen Phillimore has updated the pull request incrementally with one > additional commit since the last revision: > > Remove assert no longer valid. Looks good. Thanks. ------------- Marked as reviewed by dholmes (Reviewer). PR: https://git.openjdk.org/jdk/pull/10832
