Summary: Remove JVMTI oops_do calls from JVMTI and GCs Tested with tier1-3, also built shenandoah to verify shenandoah changes. open webrev at http://cr.openjdk.java.net/~coleenp/2020/8247808.01/webrev bug link https://bugs.openjdk.java.net/browse/JDK-8247808 Thanks, Coleen