1 /*
   2  * Copyright (c) 2018, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.hotspot.management;
  26 
  27 import static java.lang.Thread.currentThread;
  28 
  29 import java.lang.management.ManagementFactory;
  30 import java.util.List;
  31 
  32 import org.graalvm.compiler.serviceprovider.ServiceProvider;
  33 import org.graalvm.compiler.serviceprovider.JMXService;
  34 
  35 import com.sun.management.ThreadMXBean;
  36 
  37 /**
  38  * Implementation of {@link JMXService} for JDK 11 and later.
  39  */
  40 @ServiceProvider(JMXService.class)
  41 public class JMXServiceProvider extends JMXService {
  42     private final ThreadMXBean threadMXBean = (ThreadMXBean) ManagementFactory.getThreadMXBean();
  43 
  44     @Override
  45     protected long getThreadAllocatedBytes(long id) {
  46         return threadMXBean.getThreadAllocatedBytes(id);
  47     }
  48 
  49     @Override
  50     protected long getCurrentThreadCpuTime() {
  51         long[] times = threadMXBean.getThreadCpuTime(new long[]{currentThread().getId()});
  52         return times[0];
  53     }
  54 
  55     @Override
  56     protected boolean isThreadAllocatedMemorySupported() {
  57         return threadMXBean.isThreadAllocatedMemorySupported();
  58     }
  59 
  60     @Override
  61     protected boolean isCurrentThreadCpuTimeSupported() {
  62         return threadMXBean.isThreadCpuTimeSupported();
  63     }
  64 
  65     @Override
  66     protected List<String> getInputArguments() {
  67         return ManagementFactory.getRuntimeMXBean().getInputArguments();
  68     }
  69 }