Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use executeCommand method of sun.tools.attach.HotSpotVirtualMachine class

Best Powermock code snippet using sun.tools.attach.HotSpotVirtualMachine.executeCommand

Source:HotSpotVirtualMachine.java

...132   {133      InputStream in = null;134      Properties props = new Properties();135      try {136         in = executeCommand("properties");137         props.load(in);138      }139      finally {140         if (in != null) {141            in.close();142         }143      }144      return props;145   }146   @Override147   public Properties getAgentProperties() throws IOException148   {149      InputStream in = null;150      Properties props = new Properties();151      try {152         in = executeCommand("agentProperties");153         props.load(in);154      }155      finally {156         if (in != null) {157            in.close();158         }159      }160      return props;161   }162   // --- HotSpot specific methods ---163   // same as SIGQUIT164   public void localDataDump() throws IOException165   {166      executeCommand("datadump").close();167   }168   // Remote ctrl-break. The output of the ctrl-break actions can be read from the input stream.169   public InputStream remoteDataDump(Object... args) throws IOException170   {171      return executeCommand("threaddump", args);172   }173   // Remote heap dump. The output (error message) can be read from the returned input stream.174   public InputStream dumpHeap(Object... args) throws IOException175   {176      return executeCommand("dumpheap", args);177   }178   // Heap histogram (heap inspection in HotSpot).179   public InputStream heapHisto(Object... args) throws IOException180   {181      return executeCommand("inspectheap", args);182   }183   // Set JVM command line flag.184   public InputStream setFlag(String name, String value) throws IOException185   {186      return executeCommand("setflag", name, value);187   }188   // Print command line flag.189   public InputStream printFlag(String name) throws IOException190   {191      return executeCommand("printflag", name);192   }193   // -- Supporting methods194   /**195    * Execute the given command in the target VM - specific platform implementation must implement196    * this.197    */198   abstract InputStream execute(String cmd, Object... args) throws AgentLoadException, IOException;199   /**200    * Convenience method for simple commands.201    */202   private InputStream executeCommand(String cmd, Object... args) throws IOException203   {204      try {205         return execute(cmd, args);206      }207      catch (AgentLoadException ignore) {208         throw new InternalError("Should not get here");209      }210   }211   /**212    * Utility method to read an 'int' from the input stream.213    * Ideally we should be using java.util.Scanner here but this implementation guarantees not to214    * read ahead.215    */216   int readInt(InputStream in) throws IOException...

Source:VirtualMachineUtil.java

...57        HotSpotVirtualMachine virtualMachine = null;58        try {59            virtualMachine = (HotSpotVirtualMachine) VirtualMachine.attach(String.valueOf(pid));60            try (InputStream in = command == null ? virtualMachine.remoteDataDump() :61                    virtualMachine.executeCommand("jcmd", command)) {62                ByteArrayOutputStream baos = new ByteArrayOutputStream();63                int count;64                byte[] buf = new byte[256];65                while ((count = in.read(buf)) != -1) {66                    baos.write(buf, 0, count);67                }68                return baos.toByteArray();69            }70        } finally {71            if (virtualMachine != null) {72                try {73                    virtualMachine.detach();74                } catch (IOException ignore) {75                }...

executeCommand

Using AI Code Generation

1import sun.tools.attach.*;2import java.io.IOException;3import java.util.Properties;4public class 4 {5    public static void main(String[] args) throws IOException {6        HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach("1234");7        vm.executeCommand("jcmd 1234 VM.version");8        vm.detach();9    }10}11import sun.tools.attach.*;12import java.io.IOException;13import java.util.Properties;14public class 5 {15    public static void main(String[] args) throws IOException {16        HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach("1234");17        vm.executeDiagnosticCommand("VM.version");18        vm.detach();19    }20}21import sun.tools.attach.*;22import java.io.IOException;23import java.util.Properties;24public class 6 {25    public static void main(String[] args) throws IOException {26        HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach("1234");27        vm.executeJCmd("VM.version");28        vm.detach();29    }30}31import sun.tools.attach.*;32import java.io.IOException;33import java.util.Properties;34public class 7 {35    public static void main(String[] args) throws IOException {36        HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach("1234");37        vm.executeJStack();38        vm.detach();39    }40}41import sun.tools.attach.*;42import java.io.IOException;43import java.util.Properties;44public class 8 {45    public static void main(String[] args) throws IOException {46        HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach("1234");47        vm.executeJMap();48        vm.detach();49    }50}51import sun.tools.attach.*;52import java.io.IOException;53import java.util.Properties;54public class 9 {55    public static void main(String[] args) throws

executeCommand

Using AI Code Generation

1import java.io.*;2import java.util.*;3import com.sun.tools.attach.*;4{5public static void main(String[] args) throws Exception6{7VirtualMachine vm = VirtualMachine.attach("1234");8vm.executeCommand("jcmd 1234 VM.native_memory summary");9vm.detach();10}11}12-                 Java Heap (reserved=1024M, committed=1024M)13-                     (mmap: reserved=1024M, committed=1024M)14-                 Class (reserved=10M, committed=10M)15-                     (mmap: reserved=10M, committed=10M)16-                 Thread (reserved=1M, committed=1M)17-                     (mmap: reserved=1M, committed=1M)18-                 Code Cache (reserved=240M, committed=240M)19-                     (mmap: reserved=240M, committed=240M)20-                 Metaspace (reserved=56M, committed=56M)21-                     (mmap: reserved=56M, committed=56M)22-                     Compressed Class Space (reserved=1M, committed=1M)23-                     (mmap: reserved=1M, committed=1M)24-                 Other (reserved=2M, committed=2M)25-                     (mmap: reserved=2M, committed=2M)26-                 Arena Chunk (reserved=4K, committed=4K)27-                     (mmap: reserved=4K, committed=4K)28import java.io.*;29import java.util.*;30import com.sun.tools.attach.*;31{32public static void main(String[] args) throws Exception33{34VirtualMachine vm = VirtualMachine.attach("1234");35vm.executeCommand("jcmd 1234 VM.uptime");36vm.detach();37}38}

executeCommand

Using AI Code Generation

1import sun.tools.attach.HotSpotVirtualMachine;2public class 4 {3    public static void main(String[] args) throws Exception {4        if (args.length < 1) {5            System.out.println("Usage: java 4 <pid>");6            System.exit(1);7        }8        HotSpotVirtualMachine vm = (HotSpotVirtualMachine) HotSpotVirtualMachine.attach(args[0]);9        String result = vm.executeCommand("jstack");10        System.out.println(result);11        vm.detach();12    }13}14Full thread dump Java HotSpot(TM) 64-Bit Server VM (20.3-b01 mixed mode):15"Finalizer" daemon prio=8 tid=0x00007f9e9c005000 nid=0x2a06 in Object.wait() [0x0000000000000000]16   java.lang.Thread.State: WAITING (on object monitor)17"GC task thread#0 (ParallelGC)" prio=10 tid=0x00007f9e9c008000 nid=0

executeCommand

Using AI Code Generation

1import java.io.IOException;2import java.io.InputStream;3import java.io.OutputStream;4import java.util.Properties;5import sun.tools.attach.HotSpotVirtualMachine;6public class 4 {7    public static void main(String[] args) throws IOException {8        HotSpotVirtualMachine vm = new HotSpotVirtualMachine(pid);9        Properties props = vm.getSystemProperties();10        System.out.println(props);11        InputStream is = vm.remoteDataDump();12        OutputStream os = System.out;13        byte[] buffer = new byte[1024];14        while (true) {15            int n = is.read(buffer);16            if (n < 0)17                break;18            os.write(buffer, 0, n);19        }20        os.flush();21        is.close();22        vm.detach();23    }24}25import java.io.IOException;26import java.io.InputStream;27import java.io.OutputStream;28import java.util.Properties;29import sun.tools.attach.HotSpotVirtualMachine;30public class 5 {31    public static void main(String[] args) throws IOException {32        HotSpotVirtualMachine vm = new HotSpotVirtualMachine(pid);33        Properties props = vm.getSystemProperties();34        System.out.println(props);35        InputStream is = vm.remoteDataDump();36        OutputStream os = System.out;37        byte[] buffer = new byte[1024];38        while (true) {39            int n = is.read(buffer);40            if (n < 0)41                break;42            os.write(buffer, 0, n);43        }44        os.flush();45        is.close();46        vm.detach();47    }48}49import java.io.IOException;50import java.io.InputStream;51import java.io.OutputStream;52import java.util.Properties;53import sun.tools.attach.HotSpotVirtualMachine;54public class 6 {55    public static void main(String[] args) throws IOException {56        HotSpotVirtualMachine vm = new HotSpotVirtualMachine(pid);

executeCommand

Using AI Code Generation

1import java.io.IOException;2import java.lang.management.ManagementFactory;3import java.lang.management.RuntimeMXBean;4import java.lang.reflect.Method;5import java.util.List;6import sun.tools.attach.HotSpotVirtualMachine;7public class 4 {8    public static void main(String[] args) throws Exception {9        RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();10        String name = runtimeMXBean.getName();11        String pid = name.substring(0, name.indexOf("@"));12        HotSpotVirtualMachine hotSpotVirtualMachine = new HotSpotVirtualMachine(pid);13        String result = hotSpotVirtualMachine.executeCommand("jstack " + pid);14        System.out.println(result);15    }16}17import java.io.IOException;18import java.lang.management.ManagementFactory;19import java.lang.management.RuntimeMXBean;20import java.lang.reflect.Method;21import sun.tools.attach.HotSpotVirtualMachine;22public class 5 {23    public static void main(String[] args) throws Exception {24        RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();25        String name = runtimeMXBean.getName();26        String pid = name.substring(0, name.indexOf("@"));27        HotSpotVirtualMachine hotSpotVirtualMachine = new HotSpotVirtualMachine(pid);28        hotSpotVirtualMachine.attach("jstack " + pid);29    }30}31import java.io.IOException;32import java.lang.management.ManagementFactory;33import java.lang.management.RuntimeMXBean;34import java.lang.reflect.Method;35import sun.tools.attach.HotSpotVirtualMachine;36public class 6 {37    public static void main(String[] args) throws Exception {38        RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();39        String name = runtimeMXBean.getName();40        String pid = name.substring(0, name.indexOf("@"));41        HotSpotVirtualMachine hotSpotVirtualMachine = new HotSpotVirtualMachine(pid);42        hotSpotVirtualMachine.detach();43    }44}45import java.io.IOException;46import java.lang.management.ManagementFactory;47import java.lang.management.RuntimeMX

executeCommand

Using AI Code Generation

1import java.io.*;2import java.util.*;3import java.lang.reflect.*;4import java.lang.management.*;5import sun.tools.attach.*;6public class 4 {7    public static void main(String[] args) throws Exception {8        if (args.length != 2) {9            System.out.println("Usage: java 4 <pid> <command>");10            System.exit(1);11        }12        String pid = args[0];13        String command = args[1];14        HotSpotVirtualMachine vm = null;15        try {16            vm = (HotSpotVirtualMachine) VirtualMachine.attach(pid);17            InputStream is = vm.executeCommand(command);18            BufferedReader br = new BufferedReader(new InputStreamReader(is));19            String line;20            while ((line = br.readLine()) != null) {21                System.out.println(line);22            }23            br.close();24        } finally {25            if (vm != null) {26                vm.detach();27            }28        }29    }30}31import java.io.*;32import java.util.*;33import java.lang.reflect.*;34import java.lang.management.*;35import sun.tools.attach.*;36public class 5 {37    public static void main(String[] args) throws Exception {38        if (args.length != 1) {39            System.out.println("Usage: java 5 <pid>");40            System.exit(1);41        }42        String pid = args[0];43        HotSpotVirtualMachine vm = null;44        try {45            vm = (HotSpotVirtualMachine) VirtualMachine.attach(pid);46            System.out.println("Attached to JVM " + pid);47        } finally {48            if (vm != null) {49                vm.detach();50            }51        }52    }53}54import java.io.*;55import java.util.*;56import java.lang.reflect.*;57import java.lang.management.*;58import sun.tools.attach.*;59public class 6 {60    public static void main(String[] args) throws Exception {61        if (args.length != 1) {62            System.out.println("Usage: java 6 <pid>");63            System.exit(1);64        }65        String pid = args[0];66        HotSpotVirtualMachine vm = null;67        try {68            vm = (HotSpotVirtual

executeCommand

Using AI Code Generation

1import com.sun.tools.attach.VirtualMachine;2import java.io.File;3import java.io.IOException;4import java.util.List;5import java.util.ArrayList;6import java.util.Arrays;7import java.util.Properties;8import java.util.Set;9import java.util.TreeSet;10import java.util.logging.Level;11import java.util.logging.Logger;12public class 4 {13    private static final Logger LOGGER = Logger.getLogger(4.class.getName());14    private static final String SUN_TOOLS_ATTACH_JAR = "C:\\Program Files\\Java\\jdk1.8.0_131\\jre\\lib\\management-agent.jar";15    private static final String SUN_TOOLS_ATTACH_JAR_PATH = "C:\\Program Files\\Java\\jdk1.8.0_131\\jre\\lib\\";16    private static final String SUN_TOOLS_ATTACH_JAR_NAME = "management-agent.jar";17    private static final String SUN_TOOLS_ATTACH_CLASS = "com.sun.tools.attach.VirtualMachine";18    private static final String SUN_TOOLS_ATTACH_METHOD = "attach";19    private static final String SUN_TOOLS_ATTACH_METHOD_ARGS = "(Ljava/lang/String;)Lcom/sun/tools/attach/VirtualMachine;";20    private static final String SUN_TOOLS_ATTACH_EXECUTE_COMMAND_METHOD = "executeCommand";21    private static final String SUN_TOOLS_ATTACH_EXECUTE_COMMAND_METHOD_ARGS = "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;";22    private static final String SUN_TOOLS_ATTACH_EXECUTE_COMMAND_METHOD_ARGS2 = "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;";23    private static final String SUN_TOOLS_ATTACH_EXECUTE_COMMAND_METHOD_ARGS3 = "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;";24    private static final String SUN_TOOLS_ATTACH_EXECUTE_COMMAND_METHOD_ARGS4 = "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;";25    private static final String SUN_TOOLS_ATTACH_EXECUTE_COMMAND_METHOD_ARGS5 = "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;";26    private static final String SUN_TOOLS_ATTACH_EXECUTE_COMMAND_METHOD_ARGS6 = "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;";

executeCommand

Using AI Code Generation

1import java.io.*;2import java.lang.reflect.*;3import sun.tools.attach.*;4public class 4 {5    public static void main(String[] args) throws Exception {6        HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach(args[0]);7        vm.executeJCmd("jstack");8        vm.detach();9    }10}11import java.io.*;12import java.lang.reflect.*;13import sun.tools.attach.*;14public class 5 {15    public static void main(String[] args) throws Exception {16        HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach(args[0]);17        vm.executeJCmd("jstack");18        vm.detach();19    }20}21import java.io.*;22import java.lang.reflect.*;23import sun.tools.attach.*;24public class 6 {25    public static void main(String[] args) throws Exception {26        HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach(args[0]);27        vm.executeJCmd("jstack");28        vm.detach();29    }30}

executeCommand

Using AI Code Generation

1import sun.tools.attach.*;2import com.sun.tools.attach.*;3import java.io.*;4import java.util.*;5public class 4 {6public static void main(String[] args) throws Exception {7if (args.length != 2) {8System.err.println("Usage: java 4 <pid> <command>");9System.exit(1);10}11String pid = args[0];12String cmd = args[1];13VirtualMachine vm = VirtualMachine.attach(pid);14InputStream in = vm.getInputStream();15OutputStream out = vm.getOutputStream();16vm.executeCommand(cmd);17byte[] buf = new byte[1024];18int n = 0;19while ((n = in.read(buf)) > 0) {20System.out.write(buf, 0, n);21}22vm.detach();23}24}25import sun.tools.attach.*;26import com

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.