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How to use VirtualMachineDescriptor class of com.sun.tools.attach package

Best Powermock code snippet using com.sun.tools.attach.VirtualMachineDescriptor

Source:Attacher.java

...14import com.sun.tools.attach.AgentInitializationException;15import com.sun.tools.attach.AgentLoadException;16import com.sun.tools.attach.AttachNotSupportedException;17import com.sun.tools.attach.VirtualMachine;18import com.sun.tools.attach.VirtualMachineDescriptor;19public class Attacher {20  public static void main(String[] args) throws IOException {21    // https://github.com/giltene/jHiccup22    ExceptionCounterConfiguration configuration;23    try {24      configuration = new ExceptionCounterConfiguration(args);25    } catch (ConfigurationException e) {26      System.err.println(e.getMessage());27      usage(System.err);28      System.exit(1);29      return;30    }31    List<VirtualMachineDescriptor> descriptors;32    try {33      descriptors = getVmDescriptors(configuration);34    } catch (ConfigurationException e) {35      System.err.println(e.getMessage());36      System.exit(0);37      return; // keep compiler happy38    }39    40    Path channel = Paths.get("channel").toAbsolutePath();41    try {42      grabPansInVms(configuration, descriptors, channel);43    } finally {44      Files.deleteIfExists(channel);45    }46    System.exit(0);47  }48  public static void grabPansInVms(ExceptionCounterConfiguration configuration,49      List<VirtualMachineDescriptor> descriptors, Path channel) {50    for (VirtualMachineDescriptor descriptor : descriptors) {51      try {52        grabPansInVm(configuration, descriptor, channel);53      } catch (AttachNotSupportedException | AgentLoadException | AgentInitializationException | IOException  e) {54        System.err.println("failed to attach");55      }56    }57  }58  public static void grabPansInVm(ExceptionCounterConfiguration configuration,59      VirtualMachineDescriptor descriptor, Path channel) throws AttachNotSupportedException,60      IOException, AgentLoadException, AgentInitializationException {61    if (Files.exists(channel)) {62      try (SeekableByteChannel byteChannel = Files.newByteChannel(channel, WRITE)) {63        byteChannel.truncate(0L);64      }65    } else {66      Files.createFile(channel);67    }68    69    // TODO check if provider supports attaching70    VirtualMachine vm = VirtualMachine.attach(descriptor);71    Properties systemProperties = vm.getSystemProperties();72    String javaCommand = systemProperties.getProperty("sun.java.command");73    if (javaCommand == null || javaCommand.startsWith(Attacher.class.getName())) {74      return;75    }76    vm.loadAgentPath(configuration.agentPath, channel.toString());77    vm.detach();78    79    try (BufferedReader reader = Files.newBufferedReader(channel, US_ASCII)) {80      String line;81      while ((line = reader.readLine()) != null) {82        System.out.println(line);83      }84    }85  }86  87  private static List<VirtualMachineDescriptor> getVmDescriptors(ExceptionCounterConfiguration configuration) throws ConfigurationException {88    List<VirtualMachineDescriptor> descriptors = VirtualMachine.list();89    String pid = configuration.pidOfProcessToAttachTo;90    if (pid == null) {91      return descriptors;92    } else {93      for (VirtualMachineDescriptor descriptor : descriptors) {94        if (descriptor.id().equals(pid)) {95          return Collections.singletonList(descriptor);96        }97      }98      throw new ConfigurationException("not process with pid: " + pid + " found");99    }100  }101  private static void usage(PrintStream s) {102    String validArgs =103        "\"[-p pidOfProcessToAttachTo] [-a agentPath]\"\n";104    s.println("valid arguments = " + validArgs);105    s.println(106        " [-h]                        help\n"107        + " [-p pidOfProcessToAttachTo] Attach to the process with given pid and inject exception counter as an agent."...

Source:AttachThread.java

1package com.agent.boot.lhy.agent.agentmain;2import com.alibaba.fastjson.JSON;3import com.sun.tools.attach.AttachNotSupportedException;4import com.sun.tools.attach.VirtualMachine;5import com.sun.tools.attach.VirtualMachineDescriptor;6import java.io.IOException;7import java.util.List;8import java.util.Objects;9/**10 * @author: liuheyng11 * @date: 2021/4/10 9:5212 * @description:13 */14public class AttachThread extends Thread {15    /**16     * è®°å½ç¨åºå¯å¨æ¶ç VM éå17     */18    private final List<VirtualMachineDescriptor> listBefore;19    /**20     * è¦å è½½çagent.jar21     */22    private final String jar;23    private AttachThread(String attachJar, List<VirtualMachineDescriptor> vms) {24        listBefore = vms;25        jar = attachJar;26    }27    public static void main(String[] args) {28        new AttachThread("D:\\idea-workspace\\spring-boot-agent\\target\\spring-boot-agent.jar", VirtualMachine.list()).start();29    }30    @Override31    public void run() {32        VirtualMachine vm;33        List<VirtualMachineDescriptor> latestList;34        int count = 0;35        try {36            while (true) {37                latestList = VirtualMachine.list();38                vm = hasTargetVm(latestList);39                if (vm == null) {40                    System.out.println("æ²¡æç®æ  jvm ç¨åºï¼è¯·æå¨æå®java pid");41                    try {42                        vm = VirtualMachine.attach("46358");43                    } catch (AttachNotSupportedException e) {44                        //System.out.println("æç»è®¿é® Disconnected from the target VM");45                    }46                }47                Thread.sleep(1000);48                System.out.println(count++);49                if (Objects.nonNull(vm) || count >= 100) {50                    break;51                }52            }53            Objects.requireNonNull(vm).loadAgent(jar, "hello");54            System.out.println(JSON.toJSONString(System.getProperties()));55            //vm.detach();56        } catch (Exception e) {57            System.out.println("å¼å¸¸ï¼" + e);58        }59    }60    /**61     * å¤ææ¯å¦æç®æ  JVM ç¨åºè¿è¡62     */63    private VirtualMachine hasTargetVm(List<VirtualMachineDescriptor> listAfter) throws IOException, AttachNotSupportedException {64        for (VirtualMachineDescriptor vmd : listAfter) {65            if (vmd.displayName().endsWith("TestMain"))66                return VirtualMachine.attach(vmd);67        }68        return null;69    }70}...

Source:VirtualMachineTest.java

1/*2package com.gochinatv.cdn.api.vm;3import com.sun.tools.attach.AttachNotSupportedException;4import com.sun.tools.attach.VirtualMachine;5import com.sun.tools.attach.VirtualMachineDescriptor;6import java.util.Properties;7*/8/**9 * ${DESCRIPTION}10 *11 * @auhtor jacktomcat12 * @create 2018-12-03 ä¸å9:3113 *//*14public class VirtualMachineTest {15    public static void main(String[] args) {16        VirtualMachineDescriptor virtualMachineDescriptor = null;17        for (VirtualMachineDescriptor descriptor : VirtualMachine.list()) {18            String pid = descriptor.id();19            System.out.println(pid);20            if (pid.equals(Integer.toString(1782))) {21                virtualMachineDescriptor = descriptor;22            }23            try {24                VirtualMachine virtualMachine = VirtualMachine.attach(virtualMachineDescriptor);25                Properties systemProperties = virtualMachine.getSystemProperties();26                System.out.println(systemProperties);27                //virtualMachine.loadAgent("");28            } catch (AttachNotSupportedException e) {29                e.printStackTrace();30            } catch (Exception e) {31                e.printStackTrace();...

VirtualMachineDescriptor

Using AI Code Generation

1import java.io.IOException;2import java.util.List;3import com.sun.tools.attach.VirtualMachine;4import com.sun.tools.attach.VirtualMachineDescriptor;5public class 4 {6public static void main(String[] args) throws IOException {7List<VirtualMachineDescriptor> list = VirtualMachine.list();8for (VirtualMachineDescriptor vmd : list) {9System.out.println("PID: " + vmd.id() + " - " + vmd.displayName());10}11}12}

VirtualMachineDescriptor

Using AI Code Generation

1import java.util.*;2import com.sun.tools.attach.*;3public class 4 {4    public static void main(String[] args) throws Exception {5        List<VirtualMachineDescriptor> list = VirtualMachine.list();6        for (VirtualMachineDescriptor vmd : list) {7            System.out.println(vmd.displayName());8        }9    }10}

VirtualMachineDescriptor

Using AI Code Generation

1import java.io.IOException;2import java.util.List;3import com.sun.tools.attach.*;4public class 4 {5    public static void main(String[] args) throws IOException {6        List<VirtualMachineDescriptor> vmdList = VirtualMachine.list();7        for (VirtualMachineDescriptor vmd: vmdList) {8            System.out.println(vmd.id() + " " + vmd.displayName());9        }10    }11}12import java.io.IOException;13import java.util.List;14import com.sun.tools.attach.*;15public class 5 {16    public static void main(String[] args) throws IOException {17        VirtualMachine vm = VirtualMachine.attach("1234");18        vm.detach();19    }20}21import java.io.IOException;22import java.util.List;23import com.sun.tools.attach.*;24public class 6 {25    public static void main(String[] args) throws IOException {26        VirtualMachine vm = VirtualMachine.attach("1234");27        vm.loadAgent("path/to/agent.jar");28        vm.detach();29    }30}31import java.io.IOException;32import java.util.List;33import com.sun.tools.attach.*;34public class 7 {35    public static void main(String[] args) throws IOException {36        VirtualMachine vm = VirtualMachine.attach("1234");37        vm.loadAgent("path/to/agent.jar", "arg1,arg2");38        vm.detach();39    }40}41import java.io.IOException;42import java.util.List;43import com.sun.tools.attach.*;44public class 8 {45    public static void main(String[] args) throws IOException {46        VirtualMachine vm = VirtualMachine.attach("1234");47        vm.loadAgentLibrary("path/to/agent.so", "arg1,arg2");48        vm.detach();49    }50}51import java.io.IOException;52import java.util.List;53import com.sun.tools.attach.*;54public class 9 {55    public static void main(String[] args) throws IOException {56        VirtualMachine vm = VirtualMachine.attach("1234");57        vm.loadAgentPath("path/to/agent",

VirtualMachineDescriptor

Using AI Code Generation

1import java.util.List;2import com.sun.tools.attach.*;3public class 4 {4	public static void main(String[] args) {5		try {6			List<VirtualMachineDescriptor> vmds = VirtualMachine.list();7			for (VirtualMachineDescriptor vmd : vmds) {8				System.out.println(vmd.id() + "\t" + vmd.displayName());9			}10		} catch (Exception e) {11			e.printStackTrace();12		}13	}14}

VirtualMachineDescriptor

Using AI Code Generation

1import com.sun.tools.attach.*;2{3    public static void main(String[] args) throws Exception4    {5        List<VirtualMachineDescriptor> list = VirtualMachine.list();6        for(VirtualMachineDescriptor vmd:list)7        {8            String pid = vmd.id();9            String process = vmd.displayName();10            System.out.println(pid + " " + process);11        }12    }13}

VirtualMachineDescriptor

Using AI Code Generation

1import com.sun.tools.attach.*;2import java.util.*;3{4public static void main(String... s)throws Exception5{6List<VirtualMachineDescriptor> vmds = VirtualMachine.list();7for(VirtualMachineDescriptor vmd : vmds)8{9System.out.println("id: "+vmd.id());10System.out.println("display name: "+vmd.displayName());11System.out.println("provider: "+vmd.provider());12System.out.println("location: "+vmd.location());13}14}15}

VirtualMachineDescriptor

Using AI Code Generation

1import java.util.List;2import com.sun.tools.attach.VirtualMachine;3import com.sun.tools.attach.VirtualMachineDescriptor;4public class 4 {5	public static void main(String args[]) {6		List<VirtualMachineDescriptor> vmds = VirtualMachine.list();7		for (VirtualMachineDescriptor vmd : vmds) {8			System.out.println("Virtual Machine Id: " + vmd.id());9			System.out.println("Virtual Machine Display Name: " + vmd.displayName());10		}11	}12}

VirtualMachineDescriptor

Using AI Code Generation

1import java.io.*;2import java.util.*;3import com.sun.tools.attach.*;4{5	public static void main(String []args)6	{7		List <VirtualMachineDescriptor> list = VirtualMachine.list();8		for (VirtualMachineDescriptor vmd : list)9		{10			System.out.println("PID: " + vmd.id() + " " + vmd.displayName());11		}12	}13}

VirtualMachineDescriptor

Using AI Code Generation

1import com.sun.tools.attach.*;2import java.util.*;3import java.io.*;4public class 4 {5    public static void main(String[] args) {6        try {7            List<VirtualMachineDescriptor> vmds = VirtualMachine.list();8            for (VirtualMachineDescriptor vmd: vmds) {9                System.out.println(vmd.id() + " " + vmd.displayName());10            }11            VirtualMachine vm = VirtualMachine.attach("1234");12            Properties p = vm.getSystemProperties();13            for (Map.Entry<Object, Object> entry: p.entrySet()) {14                System.out.println(entry.getKey() + " = " + entry.getValue());15            }16            vm.detach();17        }18        catch (Exception e) {19            e.printStackTrace();20        }21    }22}23java.runtime.name = Java(TM) SE Runtime Environment24java.vm.name = Java HotSpot(TM) Server VM

VirtualMachineDescriptor

Using AI Code Generation

1import com.sun.tools.attach.*;2import java.util.*;3{4public static void main(String args[])5{6List l = VirtualMachine.list();7for(int i=0;i<l.size();i++)8{9VirtualMachineDescriptor vmd = (VirtualMachineDescriptor)l.get(i);10System.out.println("Process ID: " + vmd.id());11System.out.println("Display Name: " + vmd.displayName());12}13}14}15import com.sun.tools.attach.*;16import java.util.*;17{18public static void main(String args[])19{20List l = VirtualMachine.list();21for(int i=0;i<l.size();i++)22{23VirtualMachineDescriptor vmd = (VirtualMachineDescriptor)l.get(i);24System.out.println("Process ID: " + vmd.id());25System.out.println("Display Name: " + vmd.displayName());26VirtualMachine vm = VirtualMachine.attach(vmd);27System.out.println("Process ID: " + vm.id());28}29}30}

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