1 /*
   2  * Copyright (c) 2003, 2013, 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.List;
  29 import sun.management.counter.Counter;
  30 /**
  31  * An interface for the monitoring and management of the
  32  * Java virtual machine.
  33  */
  34 public interface VMManagement {
  35 
  36     // Optional supports
  37     public boolean isCompilationTimeMonitoringSupported();
  38     public boolean isThreadContentionMonitoringSupported();
  39     public boolean isThreadContentionMonitoringEnabled();
  40     public boolean isCurrentThreadCpuTimeSupported();
  41     public boolean isOtherThreadCpuTimeSupported();
  42     public boolean isThreadCpuTimeEnabled();
  43     public boolean isBootClassPathSupported();
  44     public boolean isObjectMonitorUsageSupported();
  45     public boolean isSynchronizerUsageSupported();
  46     public boolean isThreadAllocatedMemorySupported();
  47     public boolean isThreadAllocatedMemoryEnabled();
  48     public boolean isGcNotificationSupported();
  49     public boolean isRemoteDiagnosticCommandsSupported();
  50 
  51     // Class Loading Subsystem
  52     public long    getTotalClassCount();
  53     public int     getLoadedClassCount();
  54     public long    getUnloadedClassCount();
  55     public boolean getVerboseClass();
  56 
  57     // Memory Subsystem
  58     public boolean getVerboseGC();
  59 
  60     // Runtime Subsystem
  61     public String  getManagementVersion();
  62     public String  getVmId();
  63     public String  getVmName();
  64     public String  getVmVendor();
  65     public String  getVmVersion();
  66     public String  getVmSpecName();
  67     public String  getVmSpecVendor();
  68     public String  getVmSpecVersion();
  69     public String  getClassPath();
  70     public String  getLibraryPath();
  71     public String  getBootClassPath();
  72     public List<String> getVmArguments();
  73     public long    getStartupTime();
  74     public int     getAvailableProcessors();
  75 
  76     // Compilation Subsystem
  77     public String  getCompilerName();
  78     public long    getTotalCompileTime();
  79 
  80     // Thread Subsystem
  81     public long    getTotalThreadCount();
  82     public int     getLiveThreadCount();
  83     public int     getPeakThreadCount();
  84     public int     getDaemonThreadCount();
  85 
  86     // Operating System
  87     public String  getOsName();
  88     public String  getOsArch();
  89     public String  getOsVersion();
  90 
  91     // Hotspot-specific Runtime support
  92     public long    getSafepointCount();
  93     public long    getTotalSafepointTime();
  94     public long    getSafepointSyncTime();
  95     public long    getTotalApplicationNonStoppedTime();
  96 
  97     public long    getLoadedClassSize();
  98     public long    getUnloadedClassSize();
  99     public long    getClassLoadingTime();
 100     public long    getMethodDataSize();
 101     public long    getInitializedClassCount();
 102     public long    getClassInitializationTime();
 103     public long    getClassVerificationTime();
 104 
 105     // Performance counter support
 106     public List<Counter>   getInternalCounters(String pattern);
 107 }