Java DiagnosticCommandMBean类代码示例

import com.sun.management.DiagnosticCommandMBean; //导入依赖的package包/类
private static String executeDcmd(String cmd, String ... args) {
    DiagnosticCommandMBean dcmd = ManagementFactoryHelper.getDiagnosticCommandMBean();
    Object[] dcmdArgs = {args};
    String[] signature = {String[].class.getName()};

    String cmdString = cmd + " " +
        Arrays.stream(args).collect(Collectors.joining(" "));
    File f = new File("dcmdoutput-" + cmd + "-" + System.currentTimeMillis() + ".txt");
    System.out.println("Output from Dcmd '" + cmdString + "' is being written to file " + f);
    try (FileWriter fw = new FileWriter(f)) {
        fw.write("> " + cmdString + ":");
        String result = (String) dcmd.invoke(cmd, dcmdArgs, signature);
        fw.write(result);
        return result;
    } catch(Exception ex) {
        ex.printStackTrace();
    }
    return null;
}
 

import com.sun.management.DiagnosticCommandMBean; //导入依赖的package包/类
private static String executeDcmd(String cmd, String ... args) {
    DiagnosticCommandMBean dcmd = ManagementFactoryHelper.getDiagnosticCommandMBean();
    Object[] dcmdArgs = {args};
    String[] signature = {String[].class.getName()};

    try {
        System.out.print("> " + cmd + " ");
        for (String s : args) {
            System.out.print(s + " ");
        }
        System.out.println(":");
        String result = (String) dcmd.invoke(cmd, dcmdArgs, signature);
        System.out.println(result);
        return result;
    } catch(Exception ex) {
        ex.printStackTrace();
    }
    return null;
}
 

import com.sun.management.DiagnosticCommandMBean; //导入依赖的package包/类
public static synchronized DiagnosticCommandMBean getDiagnosticCommandMBean() {
    // Remote Diagnostic Commands may not be supported
    if (hsDiagCommandMBean == null && jvm.isRemoteDiagnosticCommandsSupported()) {
        hsDiagCommandMBean = new DiagnosticCommandImpl(jvm);
    }
    return hsDiagCommandMBean;
}
 

import com.sun.management.DiagnosticCommandMBean; //导入依赖的package包/类
public static HashMap<ObjectName, DynamicMBean> getPlatformDynamicMBeans() {
    HashMap<ObjectName, DynamicMBean> map = new HashMap<>();
    DiagnosticCommandMBean diagMBean = getDiagnosticCommandMBean();
    if (diagMBean != null) {
        map.put(Util.newObjectName(HOTSPOT_DIAGNOSTIC_COMMAND_MBEAN_NAME), diagMBean);
    }
    return map;
}
 

import com.sun.management.DiagnosticCommandMBean; //导入依赖的package包/类
private void doMethodInBacktraceTestB() throws Exception {
    // Start a thread which blocks in method
    Thread t = new Thread(RedefineMethodInBacktraceTargetB::methodToRedefine);
    t.setDaemon(true);
    t.start();

    // Wait here until the new thread is in the method we want to redefine
    called.await();

    // Now redefine the class while the method is still on the stack of the new thread
    doRedefine(RedefineMethodInBacktraceTargetB.class);

    // Do thread dumps in two different ways (to exercise different code paths)
    // while the old class is still on the stack

    ThreadInfo[] tis = ManagementFactory.getThreadMXBean().dumpAllThreads(false, false);
    for(ThreadInfo ti : tis) {
        System.out.println(ti);
    }

    String[] threadPrintArgs = {};
    Object[] dcmdArgs = {threadPrintArgs};
    String[] signature = {String[].class.getName()};
    DiagnosticCommandMBean dcmd = ManagementFactoryHelper.getDiagnosticCommandMBean();
    System.out.println(dcmd.invoke("threadPrint", dcmdArgs, signature));

    // release the thread
    stop.countDown();
}
 

import com.sun.management.DiagnosticCommandMBean; //导入依赖的package包/类
static synchronized DiagnosticCommandMBean getDiagnosticCommandMBean() {
    VMManagement jvm = ManagementFactoryHelper.getVMManagement();

    // Remote Diagnostic Commands may not be supported
    if (diagCommandMBean == null && jvm.isRemoteDiagnosticCommandsSupported()) {
        diagCommandMBean = new DiagnosticCommandImpl(jvm);
    }
    return diagCommandMBean;
}
 

import com.sun.management.DiagnosticCommandMBean; //导入依赖的package包/类
ClassInDirectDependency referenceClassInDirectAndTransitiveDependency(
  ClassInTransitiveDependency referenceToClassInTransitiveDependency, double d, Float f, X string) {
  final ClassInTransitiveDependency localReference = referenceToClassInTransitiveDependency;

  try {
    final Long longValue = someTee(Long.class);
  } catch (SQLException e) {
    //
  }

  // types that should come from runtime's rt.jar
  final DataSource dataSource = null;
  final DataSource secondDataSource = null;
  final DataSource thirdDataSource = null;
  final Text text = null;
  final DiagnosticCommandMBean dcmb = null;

  final int k = 3 + 4;

  final Date date = new Date(System.currentTimeMillis());

  float m = Math.max(1, 2);

  final Class<String[]> stringArrayClass = String[].class;
  final Class<Long[][]> longArrayArrayClass = Long[][].class;

  final ClassInDirectDependency directDependency = new ClassInDirectDependency();
  final String s = String.valueOf(directDependency.getOne());
  return directDependency;
}