| /* |
| * Copyright (c) 2003, 2004, 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 |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.management; |
| |
| import java.util.Map; |
| import java.util.HashMap; |
| import sun.management.counter.Counter; |
| |
| |
| /** |
| * Implementation class of HotspotThreadMBean interface. |
| * |
| * Internal, uncommitted management interface for Hotspot threading |
| * system. |
| */ |
| class HotspotThread |
| implements HotspotThreadMBean { |
| |
| private VMManagement jvm; |
| |
| /** |
| * Constructor of HotspotThread class. |
| */ |
| HotspotThread(VMManagement vm) { |
| jvm = vm; |
| } |
| |
| public native int getInternalThreadCount(); |
| |
| public Map<String, Long> getInternalThreadCpuTimes() { |
| int count = getInternalThreadCount(); |
| if (count == 0) { |
| return java.util.Collections.emptyMap(); |
| } |
| String[] names = new String[count]; |
| long[] times = new long[count]; |
| int numThreads = getInternalThreadTimes0(names, times); |
| Map<String, Long> result = new HashMap<String, Long>(numThreads); |
| for (int i = 0; i < numThreads; i++) { |
| result.put(names[i], new Long(times[i])); |
| } |
| return result; |
| } |
| public native int getInternalThreadTimes0(String[] names, long[] times); |
| |
| // Performance counter support |
| private static final String JAVA_THREADS = "java.threads."; |
| private static final String COM_SUN_THREADS = "com.sun.threads."; |
| private static final String SUN_THREADS = "sun.threads."; |
| private static final String THREADS_COUNTER_NAME_PATTERN = |
| JAVA_THREADS + "|" + COM_SUN_THREADS + "|" + SUN_THREADS; |
| |
| public java.util.List<Counter> getInternalThreadingCounters() { |
| return jvm.getInternalCounters(THREADS_COUNTER_NAME_PATTERN); |
| } |
| } |