J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2004 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.management; |
| 27 | |
| 28 | import java.util.Map; |
| 29 | import java.util.HashMap; |
| 30 | import sun.management.counter.Counter; |
| 31 | |
| 32 | |
| 33 | /** |
| 34 | * Implementation class of HotspotThreadMBean interface. |
| 35 | * |
| 36 | * Internal, uncommitted management interface for Hotspot threading |
| 37 | * system. |
| 38 | */ |
| 39 | class HotspotThread |
| 40 | implements HotspotThreadMBean { |
| 41 | |
| 42 | private VMManagement jvm; |
| 43 | |
| 44 | /** |
| 45 | * Constructor of HotspotThread class. |
| 46 | */ |
| 47 | HotspotThread(VMManagement vm) { |
| 48 | jvm = vm; |
| 49 | } |
| 50 | |
| 51 | public native int getInternalThreadCount(); |
| 52 | |
| 53 | public Map<String, Long> getInternalThreadCpuTimes() { |
| 54 | int count = getInternalThreadCount(); |
| 55 | if (count == 0) { |
| 56 | return java.util.Collections.emptyMap(); |
| 57 | } |
| 58 | String[] names = new String[count]; |
| 59 | long[] times = new long[count]; |
| 60 | int numThreads = getInternalThreadTimes0(names, times); |
| 61 | Map<String, Long> result = new HashMap<String, Long>(numThreads); |
| 62 | for (int i = 0; i < numThreads; i++) { |
| 63 | result.put(names[i], new Long(times[i])); |
| 64 | } |
| 65 | return result; |
| 66 | } |
| 67 | public native int getInternalThreadTimes0(String[] names, long[] times); |
| 68 | |
| 69 | // Performance counter support |
| 70 | private static final String JAVA_THREADS = "java.threads."; |
| 71 | private static final String COM_SUN_THREADS = "com.sun.threads."; |
| 72 | private static final String SUN_THREADS = "sun.threads."; |
| 73 | private static final String THREADS_COUNTER_NAME_PATTERN = |
| 74 | JAVA_THREADS + "|" + COM_SUN_THREADS + "|" + SUN_THREADS; |
| 75 | |
| 76 | public java.util.List<Counter> getInternalThreadingCounters() { |
| 77 | return jvm.getInternalCounters(THREADS_COUNTER_NAME_PATTERN); |
| 78 | } |
| 79 | } |