80 lines
2.8 KiB
Java
80 lines
2.8 KiB
Java
/*
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* Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package sun.management;
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import java.util.Map;
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import java.util.HashMap;
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import sun.management.counter.Counter;
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/**
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* Implementation class of HotspotThreadMBean interface.
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*
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* Internal, uncommitted management interface for Hotspot threading
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* system.
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*/
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class HotspotThread
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implements HotspotThreadMBean {
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private VMManagement jvm;
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/**
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* Constructor of HotspotThread class.
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*/
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HotspotThread(VMManagement vm) {
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jvm = vm;
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}
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public native int getInternalThreadCount();
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public Map<String, Long> getInternalThreadCpuTimes() {
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int count = getInternalThreadCount();
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if (count == 0) {
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return java.util.Collections.emptyMap();
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}
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String[] names = new String[count];
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long[] times = new long[count];
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int numThreads = getInternalThreadTimes0(names, times);
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Map<String, Long> result = new HashMap<String, Long>(numThreads);
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for (int i = 0; i < numThreads; i++) {
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result.put(names[i], new Long(times[i]));
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}
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return result;
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}
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public native int getInternalThreadTimes0(String[] names, long[] times);
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// Performance counter support
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private static final String JAVA_THREADS = "java.threads.";
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private static final String COM_SUN_THREADS = "com.sun.threads.";
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private static final String SUN_THREADS = "sun.threads.";
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private static final String THREADS_COUNTER_NAME_PATTERN =
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JAVA_THREADS + "|" + COM_SUN_THREADS + "|" + SUN_THREADS;
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public java.util.List<Counter> getInternalThreadingCounters() {
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return jvm.getInternalCounters(THREADS_COUNTER_NAME_PATTERN);
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}
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}
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