1 /* 2 * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.management; 27 28 import sun.management.counter.Counter; 29 30 /** 31 * Hotspot internal management interface for the runtime system. 32 * 33 * This management interface is internal and uncommitted 34 * and subject to change without notice. 35 */ 36 public interface HotspotRuntimeMBean { 37 38 /** 39 * Returns the number of safepoints taken place since the Java 40 * virtual machine started. 41 * 42 * @return the number of safepoints taken place since the Java 43 * virtual machine started. 44 */ 45 public long getSafepointCount(); 46 47 /** 48 * Returns the accumulated time spent at safepoints in milliseconds. 49 * This is the accumulated elapsed time that the application has 50 * been stopped for safepoint operations. 51 * 52 * @return the accumulated time spent at safepoints in milliseconds. 53 */ 54 public long getTotalSafepointTime(); 55 56 /** 57 * Returns the accumulated time spent getting to safepoints in milliseconds. 58 * 59 * @return the accumulated time spent getting to safepoints in milliseconds. 60 */ 61 public long getSafepointSyncTime(); 62 63 /** 64 * Returns a list of internal counters maintained in the Java 65 * virtual machine for the runtime system. 66 * 67 * @return a <tt>List</tt> of internal counters maintained in the VM 68 * for the runtime system. 69 */ 70 public java.util.List<Counter> getInternalRuntimeCounters(); 71 }