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How to use createAttachFile method of sun.tools.attach.SolarisVirtualMachine class

Best Powermock code snippet using sun.tools.attach.SolarisVirtualMachine.createAttachFile

Source:SolarisVirtualMachine.java

...39	// target VM so we attempt to start it and retry.40	try {41	    fd = openDoor(pid);42	} catch (FileNotFoundException fnf1) {43	    File f = createAttachFile(pid);44	    try {45		// kill -QUIT will tickle target VM to check for the46		// attach file.47		sigquit(pid);48		// give the target VM time to start the attach mechanism49		int i = 0;50                long delay = 200;51                int retries = (int)(attachTimeout() / delay);52		do {53		    try {54		        Thread.sleep(delay);55		    } catch (InterruptedException x) { }56		    try {57			fd = openDoor(pid);58		    } catch (FileNotFoundException fnf2) { }59		    i++;60	 	} while (i <= retries && fd == -1);61		if (fd == -1) {62	            throw new AttachNotSupportedException(63                        "Unable to open door: target process not responding or " + 64                        "HotSpot VM not loaded");65		}66	    } finally {67		f.delete();68	    }69	}70	assert fd >= 0;71    }72    /**73     * Detach from the target VM74     */75    public void detach() throws IOException {76	synchronized (this) {77	    if (fd != -1) {78 	        close(fd);	79	        fd = -1;80	    }81	}82    }83      84    /**85     * Execute the given command in the target VM.86     */ 87    InputStream execute(String cmd, Object ... args) throws AgentLoadException, IOException {88        assert args.length <= 3;        	// includes null89	// first check that we are still attached90	int door;91	synchronized (this) {92	    if (fd == -1) {93	        throw new IOException("Detached from target VM");94	    }95	    door = fd;96	}97	// enqueue the command via a door call98        int s = enqueue(door, cmd, args);99	assert s >= 0;				// valid file descriptor100	// The door call returns a file descriptor (one end of a socket pair).101	// Create an input stream around it.102	SocketInputStream sis = new SocketInputStream(s);103	// Read the command completion status104	int completionStatus;105	try {106	    completionStatus = readInt(sis);107	} catch (IOException ioe) {108	    sis.close();109	    throw ioe;110	}111	// If non-0 it means an error but we need to special-case the112	// "load" command to ensure that the right exception is thrown.113	if (completionStatus != 0) {114	    sis.close();115	    if (cmd.equals("load")) {116		throw new AgentLoadException("Failed to load agent library");117	    } else {118	        throw new IOException("Command failed in target VM");119	    }120	}121	// Return the input stream so that the command output can be read122	return sis;123    }124    // InputStream over a socket125    private class SocketInputStream extends InputStream {126	int s;127	public SocketInputStream(int s) {128	    this.s = s;129	}130	public synchronized int read() throws IOException {131	    byte b[] = new byte[1];132	    int n = this.read(b, 0, 1);133	    if (n == 1) {134		return b[0] & 0xff;135	    } else {136		return -1;137	    }138	}139	public synchronized int read(byte[] bs, int off, int len) throws IOException {140	    if ((off < 0) || (off > bs.length) || (len < 0) ||141                ((off + len) > bs.length) || ((off + len) < 0)) {142                throw new IndexOutOfBoundsException();143            } else if (len == 0)144                return 0;145	    return SolarisVirtualMachine.read(s, bs, off, len);146	}147	public void close() throws IOException {148	    SolarisVirtualMachine.close(s);149	}150    }151    // The door is attached to .java_pid<pid> in the target VM's working152    // directory or /tmp. 153    private int openDoor(int pid) throws IOException {154        // First check for a .java_pid<pid> file in the working directory155        // of the target process156        String fn = ".java_pid" + pid;157        String path = "/proc/" + pid + "/cwd/" + fn;158        try {159            fd = open(path);160        } catch (FileNotFoundException fnf) {161            path = "/tmp/" + fn;162            fd = open(path);163        }164        // Check that the file owner/permission to avoid attaching to165        // bogus process166        try {167            checkPermissions(path);168        } catch (IOException ioe) {169            close(fd);170            throw ioe;171        }172        return fd;173    }174    // On Solaris/Linux a simple handshake is used to start the attach mechanism175    // if not already started. The client creates a .attach_pid<pid> file in the176    // target VM's working directory (or /tmp), and the SIGQUIT handler checks177    // for the file.178    private File createAttachFile(int pid) throws IOException {179        String fn = ".attach_pid" + pid;180        String path = "/proc/" + pid + "/cwd/" + fn;181        File f = new File(path);182        try {183            f.createNewFile();184        } catch (IOException x) {185            path = "/tmp/" + fn;186            f = new File(path);187            f.createNewFile();188        }189	return f;190    }191    //-- native methods192    static native int open(String path) throws IOException;...

createAttachFile

Using AI Code Generation

1import java.io.IOException;2import java.lang.reflect.InvocationTargetException;3import java.lang.reflect.Method;4import java.nio.file.Path;5import java.nio.file.Paths;6import sun.tools.attach.SolarisVirtualMachine;7public class CreateAttachFile {8    public static void main(String[] args) throws IOException, NoSuchMethodException, SecurityException,9            IllegalAccessException, IllegalArgumentException, InvocationTargetException {10        String pid = "12345";11        Path path = Paths.get("/tmp", "attach");12        SolarisVirtualMachine vm = new SolarisVirtualMachine(pid);13        Method method = vm.getClass().getDeclaredMethod("createAttachFile", Path.class);14        method.setAccessible(true);15        method.invoke(vm, path);16    }17}

createAttachFile

Using AI Code Generation

1import java.io.*;2import java.lang.management.*;3import java.lang.reflect.*;4import java.net.*;5import java.nio.file.*;6import java.util.*;7import java.util.stream.*;8public class Attach {9    public static void main(String[] args) throws Exception {10        String pid = args[0];11        String path = args[1];12        attach(pid, path);13    }14    private static void attach(String pid, String path) throws Exception {15        Class<?> clazz = Class.forName("sun.tools.attach.SolarisVirtualMachine");16        Constructor<?> constructor = clazz.getDeclaredConstructor(String.class);17        constructor.setAccessible(true);18        Object vm = constructor.newInstance(pid);19        Method attachMethod = clazz.getDeclaredMethod("attach");20        attachMethod.setAccessible(true);21        attachMethod.invoke(vm);22        Method createAttachFileMethod = clazz.getDeclaredMethod("createAttachFile", String.class);23        createAttachFileMethod.setAccessible(true);24        createAttachFileMethod.invoke(vm, path);25    }26}

createAttachFile

Using AI Code Generation

1import sun.tools.attach.SolarisVirtualMachine;2import java.io.File;3import java.io.IOException;4public class SolarisAttachFile {5    public static void main(String[] args) throws IOException {6        SolarisVirtualMachine vm = new SolarisVirtualMachine(args[0]);7        File file = new File(args[1]);8        vm.createAttachFile(file);9    }10}

createAttachFile

Using AI Code Generation

1import sun.tools.attach.SolarisVirtualMachine;2import java.io.File;3import java.io.IOException;4public class CreateAttachFile {5    public static void main(String[] args) throws IOException {6        File file = new File("attachfile");7        file.createNewFile();8        SolarisVirtualMachine vm = new SolarisVirtualMachine(1234);9        vm.createAttachFile(file);10        vm.detach();11    }12}

createAttachFile

Using AI Code Generation

1import sun.tools.attach.SolarisVirtualMachine;2import java.io.File;3public class CreateAttachFile {4   public static void main(String args[]) throws Exception {5      if (args.length != 1) {6         System.out.println("Usage: java CreateAttachFile <PID>");7         System.exit(1);8      }9      int pid = Integer.parseInt(args[0]);10      String attachFileName = "attach_" + pid;11      File attachFile = new File(attachFileName);12      if (attachFile.exists()) {13         System.out.println("Attach file " + attachFileName + " already exists");14         System.exit(1);15      }16      System.out.println("Creating attach file " + attachFileName + "...");17      SolarisVirtualMachine.createAttachFile(pid, attachFile);18      System.out.println("Attach file " + attachFileName + " created");19   }20}21import com.sun.tools.attach.*;22import java.io.*;23import java.util.*;24public class AttachTest {25   public static void main(String args[]) {26      if (args.length != 1) {27         System.out.println("Usage: java AttachTest <attach file name>");28         System.exit(1);29      }30      String attachFileName = args[0];31      File attachFile = new File(attachFileName);32      if (!attachFile.exists()) {33         System.out.println("Attach file " + attachFileName + " does not exist");34         System.exit(1);35      }36      System.out.println("Attaching to process in file " + attachFileName + "...");37      try {38         VirtualMachine vm = VirtualMachine.attach(attachFile);39         System.out.println("Attached to process in file " + attachFileName);40         String command = "jstack " + vm.id();41         System.out.println("Executing command: " +

createAttachFile

Using AI Code Generation

1import java.io.*;2import java.lang.reflect.*;3import sun.tools.attach.*;4public class InjectCode {5    public static void main(String[] args) throws Exception {6        String pid = args[0];7        String file = args[1];8        SolarisVirtualMachine vm = new SolarisVirtualMachine(Integer.parseInt(pid));9        long address = vm.createAttachFile(file);10        vm.attach();11        vm.detach();12        vm.deleteAttachFile(address);13    }14}

createAttachFile

Using AI Code Generation

1import sun.tools.attach.SolarisVirtualMachine;2import java.io.*;3import java.util.*;4import java.lang.reflect.*;5import java.util.Properties;6import java.lang.management.*;7import java.util.List;8import java.util.ArrayList;9import java.util.Map;10import java.util.HashMap;11import java.util.Set;12import java.util.HashSet;13import java.util.Collections;14import java.util.concurrent.TimeUnit;15import java.lang.Thread;16import java.util.concurrent.atomic.AtomicInteger;17public class AttachToProcess {18    public static void main(String[] args) throws Exception {19        String pid = args[0];20        String javaHome = args[1];21        String javaVersion = args[2];22        String javaVersion2 = args[3];23        System.out.println("java.version: " + System.getProperty("java.version"));24        SolarisVirtualMachine vm = SolarisVirtualMachine.attach(pid);25        Properties props = vm.getSystemProperties();26        System.out.println("props: " + props.getProperty("java.version"));27        vm.detach();28        System.out.println("java.version: " + System.getProperty("java.version"));29    }30}

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