rev 10195 : 8048267: Replace uses of 'new Long()' with appropriate alternative across core classes
Reviewed-by: chegar, psandoz
Contributed-by: otaviojava@java.net

   1 /*
   2  * Copyright (c) 2003, 2012, 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<>(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 }
--- EOF ---