src/java.base/share/classes/java/lang/ThreadGroup.java

*** 1,7 ****
  /*
!  * Copyright (c) 1995, 2012, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 1995, 2019, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 25,35 ****
  
  package java.lang;
  
  import java.io.PrintStream;
  import java.util.Arrays;
- import jdk.internal.misc.VM;
  
  /**
   * A thread group represents a set of threads. In addition, a thread
   * group can also include other thread groups. The thread groups form
   * a tree in which every thread group except the initial thread group
--- 25,34 ----
*** 423,433 ****
      private int enumerate(Thread list[], int n, boolean recurse) {
          int ngroupsSnapshot = 0;
          ThreadGroup[] groupsSnapshot = null;
          synchronized (this) {
              if (destroyed) {
!                 return 0;
              }
              int nt = nthreads;
              if (nt > list.length - n) {
                  nt = list.length - n;
              }
--- 422,432 ----
      private int enumerate(Thread list[], int n, boolean recurse) {
          int ngroupsSnapshot = 0;
          ThreadGroup[] groupsSnapshot = null;
          synchronized (this) {
              if (destroyed) {
!                 return n;
              }
              int nt = nthreads;
              if (nt > list.length - n) {
                  nt = list.length - n;
              }
*** 557,567 ****
      private int enumerate(ThreadGroup list[], int n, boolean recurse) {
          int ngroupsSnapshot = 0;
          ThreadGroup[] groupsSnapshot = null;
          synchronized (this) {
              if (destroyed) {
!                 return 0;
              }
              int ng = ngroups;
              if (ng > list.length - n) {
                  ng = list.length - n;
              }
--- 556,566 ----
      private int enumerate(ThreadGroup list[], int n, boolean recurse) {
          int ngroupsSnapshot = 0;
          ThreadGroup[] groupsSnapshot = null;
          synchronized (this) {
              if (destroyed) {
!                 return n;
              }
              int ng = ngroups;
              if (ng > list.length - n) {
                  ng = list.length - n;
              }