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| 1 | /* | ||
| 2 | * Copyright (c) 2003, 2004, 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 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 | } | ||