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

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

Source:SolarisVirtualMachine.java

...74     */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;193    static native void close(int fd) throws IOException;194    static native int read(int fd, byte buf[], int off, int buflen) throws IOException;195    static native void checkPermissions(String path) throws IOException;196    static native void sigquit(int pid) throws IOException;197    // enqueue a command (and arguments) to the given door198    static native int enqueue(int fd, String cmd, Object ... args)199        throws IOException;200    static {201        System.loadLibrary("attach");202    }203}...

Using AI Code Generation

1import sun.tools.attach.SolarisVirtualMachine;2import sun.tools.attach.SolarisVirtualMachineDescriptor;3public class Main {4    public static void main(String[] args) throws Exception {5        SolarisVirtualMachine solarisVM = (SolarisVirtualMachine) SolarisVirtualMachineDescriptor.attachTo("12345");6        solarisVM.close();7    }8}9    at sun.tools.attach.SolarisVirtualMachineDescriptor.attachTo(SolarisVirtualMachineDescriptor.java:73)10    at Main.main(Main.java:5)11The solution is to add the following line at the end of the SolarisVirtualMachineDescriptor.attachTo() method:12SolarisVirtualMachineDescriptor.register(vmid, vm);13The SolarisVirtualMachineDescriptor.register() method is as follows:14private static void register(String vmid, SolarisVirtualMachine vm) {15    synchronized (SolarisVirtualMachineDescriptor.class) {16        if (vmidMap == null) {17            vmidMap = new HashMap<String, SolarisVirtualMachine>();18        }19        vmidMap.put(vmid, vm);20    }21}22import sun.tools.attach.SolarisVirtualMachine;23import sun.tools.attach.SolarisVirtualMachineDescriptor;24public class Main {25    public static void main(String[] args) throws Exception {26        SolarisVirtualMachine solarisVM = (SolarisVirtualMachine) SolarisVirtualMachineDescriptor.attachTo("12345");27        solarisVM.close();28    }29}30The SolarisVirtualMachine.close() method is as follows

Using AI Code Generation

1import sun.tools.attach.*;2import java.io.IOException;3public class CloseTest {4    public static void main(String[] args) throws IOException {5        SolarisVirtualMachine vm = new SolarisVirtualMachine(1234);6        vm.close();7    }8}

Using AI Code Generation

1import sun.tools.attach.SolarisVirtualMachine;2public class Test {3    public static void main(String[] args) throws Exception {4        SolarisVirtualMachine vm = new SolarisVirtualMachine(args[0]);5        vm.close();6    }7}

Using AI Code Generation

1import java.lang.reflect.*;2import sun.tools.attach.*;3public class ProcessClose {4    public static void main(String[] args) throws Exception {5        String pid = args[0];6        SolarisVirtualMachine vm = new SolarisVirtualMachine(pid);7        Class<?> clazz = vm.getClass();8        Method close = clazz.getDeclaredMethod("close");9        close.setAccessible(true);10        close.invoke(vm);11    }12}13This code is not a part of any JDK API. It is just a piece of code that uses reflection to call the close() method of sun.tools.attach.SolarisVirtualMachine class. It is not a part of any JDK API. It is just a piece of code that uses reflection to

Using AI Code Generation

1import sun.tools.attach.SolarisVirtualMachine;2public class Test {3    public static void main(String[] args) {4        SolarisVirtualMachine svm = new SolarisVirtualMachine(1234);5        svm.close();6    }7}

Using AI Code Generation

1import sun.tools.attach.SolarisVirtualMachine;2import java.io.IOException;3import java.util.ArrayList;4import java.util.List;5import java.util.stream.Collectors;6import java.util.stream.Stream;7import java.util.function.Function;8import java.util.function.Predicate;9import java.util.Arrays;10public class CloseProcess {11    public static void main(String[] args) throws IOException {12        int pid = Integer.parseInt(args[0]);13        SolarisVirtualMachine process = new SolarisVirtualMachine(pid);14        process.close();15    }16}

Using AI Code Generation

1import java.io.*;2import java.lang.reflect.*;3import java.util.*;4import sun.tools.attach.*;5public class Detach {6    public static void main(String[] args) throws Exception {7        if (args.length < 1) {8            System.err.println("Usage: java Detach <pid>");9            return;10        }11        String pid = args[0];12        SolarisVirtualMachine vm = new SolarisVirtualMachine(pid);13        vm.detach();14    }15}16How to Attach to a Running JVM Using the com.sun.tools.attach.spi.AttachProvider.providers() Method17How to Attach to a Running JVM Using the com.sun.tools.attach.spi.AttachProvider.providerType() Method

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