How to use BsdVirtualMachine class of sun.tools.attach package

Best Powermock code snippet using sun.tools.attach.BsdVirtualMachine

Source:BsdVirtualMachine.java Github

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...33import java.util.Properties;34/*35 * Bsd implementation of HotSpotVirtualMachine36 */37public class BsdVirtualMachine extends HotSpotVirtualMachine {38 // "tmpdir" is used as a global well-known location for the files39 // .java_pid<pid>. and .attach_pid<pid>. It is important that this40 // location is the same for all processes, otherwise the tools41 // will not be able to find all Hotspot processes.42 // This is intentionally not the same as java.io.tmpdir, since43 // the latter can be changed by the user.44 // Any changes to this needs to be synchronized with HotSpot.45 private static final String tmpdir;46 // The patch to the socket file created by the target VM47 String path;48 /**49 * Attaches to the target VM50 */51 public BsdVirtualMachine(AttachProvider provider, String vmid)52 throws AttachNotSupportedException, IOException53 {54 super(provider, vmid);55 // This provider only understands pids56 int pid;57 try {58 pid = Integer.parseInt(vmid);59 } catch (NumberFormatException x) {60 throw new AttachNotSupportedException("Invalid process identifier");61 }62 // Find the socket file. If not found then we attempt to start the63 // attach mechanism in the target VM by sending it a QUIT signal.64 // Then we attempt to find the socket file again.65 path = findSocketFile(pid);66 if (path == null) {67 File f = new File(tmpdir, ".attach_pid" + pid);68 createAttachFile(f.getPath());69 try {70 sendQuitTo(pid);71 // give the target VM time to start the attach mechanism72 int i = 0;73 long delay = 200;74 int retries = (int)(attachTimeout() / delay);75 do {76 try {77 Thread.sleep(delay);78 } catch (InterruptedException x) { }79 path = findSocketFile(pid);80 i++;81 } while (i <= retries && path == null);82 if (path == null) {83 throw new AttachNotSupportedException(84 "Unable to open socket file: target process not responding " +85 "or HotSpot VM not loaded");86 }87 } finally {88 f.delete();89 }90 }91 // Check that the file owner/permission to avoid attaching to92 // bogus process93 checkPermissions(path);94 // Check that we can connect to the process95 // - this ensures we throw the permission denied error now rather than96 // later when we attempt to enqueue a command.97 int s = socket();98 try {99 connect(s, path);100 } finally {101 close(s);102 }103 }104 /**105 * Detach from the target VM106 */107 public void detach() throws IOException {108 synchronized (this) {109 if (this.path != null) {110 this.path = null;111 }112 }113 }114 // protocol version115 private final static String PROTOCOL_VERSION = "1";116 // known errors117 private final static int ATTACH_ERROR_BADVERSION = 101;118 /**119 * Execute the given command in the target VM.120 */121 InputStream execute(String cmd, Object ... args) throws AgentLoadException, IOException {122 assert args.length <= 3; // includes null123 // did we detach?124 String p;125 synchronized (this) {126 if (this.path == null) {127 throw new IOException("Detached from target VM");128 }129 p = this.path;130 }131 // create UNIX socket132 int s = socket();133 // connect to target VM134 try {135 connect(s, p);136 } catch (IOException x) {137 close(s);138 throw x;139 }140 IOException ioe = null;141 // connected - write request142 // <ver> <cmd> <args...>143 try {144 writeString(s, PROTOCOL_VERSION);145 writeString(s, cmd);146 for (int i=0; i<3; i++) {147 if (i < args.length && args[i] != null) {148 writeString(s, (String)args[i]);149 } else {150 writeString(s, "");151 }152 }153 } catch (IOException x) {154 ioe = x;155 }156 // Create an input stream to read reply157 SocketInputStream sis = new SocketInputStream(s);158 // Read the command completion status159 int completionStatus;160 try {161 completionStatus = readInt(sis);162 } catch (IOException x) {163 sis.close();164 if (ioe != null) {165 throw ioe;166 } else {167 throw x;168 }169 }170 if (completionStatus != 0) {171 sis.close();172 // In the event of a protocol mismatch then the target VM173 // returns a known error so that we can throw a reasonable174 // error.175 if (completionStatus == ATTACH_ERROR_BADVERSION) {176 throw new IOException("Protocol mismatch with target VM");177 }178 // Special-case the "load" command so that the right exception is179 // thrown.180 if (cmd.equals("load")) {181 throw new AgentLoadException("Failed to load agent library");182 } else {183 throw new IOException("Command failed in target VM");184 }185 }186 // Return the input stream so that the command output can be read187 return sis;188 }189 /*190 * InputStream for the socket connection to get target VM191 */192 private class SocketInputStream extends InputStream {193 int s;194 public SocketInputStream(int s) {195 this.s = s;196 }197 public synchronized int read() throws IOException {198 byte b[] = new byte[1];199 int n = this.read(b, 0, 1);200 if (n == 1) {201 return b[0] & 0xff;202 } else {203 return -1;204 }205 }206 public synchronized int read(byte[] bs, int off, int len) throws IOException {207 if ((off < 0) || (off > bs.length) || (len < 0) ||208 ((off + len) > bs.length) || ((off + len) < 0)) {209 throw new IndexOutOfBoundsException();210 } else if (len == 0)211 return 0;212 return BsdVirtualMachine.read(s, bs, off, len);213 }214 public void close() throws IOException {215 BsdVirtualMachine.close(s);216 }217 }218 // Return the socket file for the given process.219 // Checks temp directory for .java_pid<pid>.220 private String findSocketFile(int pid) {221 String fn = ".java_pid" + pid;222 File f = new File(tmpdir, fn);223 return f.exists() ? f.getPath() : null;224 }225 /*226 * Write/sends the given to the target VM. String is transmitted in227 * UTF-8 encoding.228 */229 private void writeString(int fd, String s) throws IOException {230 if (s.length() > 0) {231 byte b[];232 try {233 b = s.getBytes("UTF-8");234 } catch (java.io.UnsupportedEncodingException x) {235 throw new InternalError();236 }237 BsdVirtualMachine.write(fd, b, 0, b.length);238 }239 byte b[] = new byte[1];240 b[0] = 0;241 write(fd, b, 0, 1);242 }243 //-- native methods244 static native void sendQuitTo(int pid) throws IOException;245 static native void checkPermissions(String path) throws IOException;246 static native int socket() throws IOException;247 static native void connect(int fd, String path) throws IOException;248 static native void close(int fd) throws IOException;249 static native int read(int fd, byte buf[], int off, int bufLen) throws IOException;250 static native void write(int fd, byte buf[], int off, int bufLen) throws IOException;251 static native void createAttachFile(String path);...

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Source:patch-j2se-attach-BSDVirtualMachine.java Github

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1$FreeBSD$2--- ../../j2se/src/solaris/classes/sun/tools/attach/BSDVirtualMachine.java 2 Feb 2009 00:28:15 -00003+++ ../../j2se/src/solaris/classes/sun/tools/attach/BSDVirtualMachine.java 2 Feb 2009 00:28:15 -00004@@ -0,0 +1,292 @@5+/*6+ * @(#)BSDVirtualMachine.java 1.8 06/03/057+ *8+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.9+ * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.10+ */11+package sun.tools.attach;12+13+import com.sun.tools.attach.VirtualMachine;14+import com.sun.tools.attach.AgentLoadException;15+import com.sun.tools.attach.AttachNotSupportedException;16+import com.sun.tools.attach.spi.AttachProvider;17+import java.io.InputStream;18+import java.io.IOException;19+import java.io.File;20+import java.util.Properties;21+22+/*23+ * BSD implementation of HotSpotVirtualMachine24+ */25+public class BSDVirtualMachine extends HotSpotVirtualMachine {26+27+ /**28+ * Hard-coded "/tmp" to match the hotspot bsd implementation29+ * hotspot/src/os/bsd/vm/os_bsd.cpp:30+ * const char* os::get_temp_directory() { return "/tmp/"; }31+ */32+ private static String getTmpDir() {33+ return "/tmp/";34+ }35+36+37+ String path;38+39+ /**40+ * Attaches to the target VM 41+ */42+ BSDVirtualMachine(AttachProvider provider, String vmid) 43+ throws AttachNotSupportedException, IOException44+ {45+ super(provider, vmid);46+47+ // This provider only understands pids 48+ int pid;49+ try {50+ pid = Integer.parseInt(vmid);51+ } catch (NumberFormatException x) {52+ throw new AttachNotSupportedException("Invalid process identifier");53+ }54+55+ // Find the socket file. If not found then we attempt to start the56+ // attach mechanism in the target VM by sending it a QUIT signal.57+ // Then we attempt to find the socket file again.58+ path = findSocketFile(pid);59+ if (path == null) {60+61+ String fn = ".attach_pid" + pid;62+ path = getTmpDir() + fn;63+ File attachFile = new File(path);64+ createAttachFile(path);65+ try {66+ sendQuitTo(pid);67+68+ // give the target VM time to start the attach mechanism69+ int i = 0;70+ long delay = 200;71+ int retries = (int)(attachTimeout() / delay);72+ do {73+ try {74+ Thread.sleep(delay);75+ } catch (InterruptedException x) { }76+ path = findSocketFile(pid);77+ i++;78+ } while (i <= retries && path == null);79+ if (path == null) {80+ throw new AttachNotSupportedException(81+ "Unable to open socket file: target process not responding " +82+ "or HotSpot VM not loaded");83+ }84+ } finally {85+ attachFile.delete();86+ }87+ }88+89+ // Check that the file owner/permission to avoid attaching to90+ // bogus process91+ checkPermissions(path);92+93+ // Check that we can connect to the process94+ // - this ensures we throw the permission denied error now rather than95+ // later when we attempt to enqueue a command.96+ int s = socket();97+ try {98+ connect(s, path);99+ } finally {100+ close(s);101+ }102+ }103+104+ /**105+ * Detach from the target VM106+ */107+ public void detach() throws IOException {108+ synchronized (this) {109+ if (this.path != null) {110+ this.path = null;111+ }112+ }113+ }114+115+ // protocol version116+ private final static String PROTOCOL_VERSION = "1";117+118+ // known errors119+ private final static int ATTACH_ERROR_BADVERSION = 101;120+ 121+ /**122+ * Execute the given command in the target VM.123+ */ 124+ InputStream execute(String cmd, Object ... args) throws AgentLoadException, IOException {125+ assert args.length <= 3; // includes null126+127+ // did we detach?128+ String p;129+ synchronized (this) {130+ if (this.path == null) {131+ throw new IOException("Detached from target VM");132+ }133+ p = this.path;134+ }135+136+ // create UNIX socket137+ int s = socket();138+139+ // connect to target VM140+ try {141+ connect(s, p);142+ } catch (IOException x) {143+ close(s);144+ throw x;145+ }146+147+ IOException ioe = null;148+149+ // connected - write request150+ // <ver> <cmd> <args...>151+ try {152+ writeString(s, PROTOCOL_VERSION);153+ writeString(s, cmd);154+155+ for (int i=0; i<3; i++) {156+ if (i < args.length && args[i] != null) {157+ writeString(s, (String)args[i]);158+ } else {159+ writeString(s, "");160+ }161+ }162+ } catch (IOException x) {163+ ioe = x;164+ }165+ 166+167+ // Create an input stream to read reply168+ SocketInputStream sis = new SocketInputStream(s);169+170+ // Read the command completion status171+ int completionStatus;172+ try {173+ completionStatus = readInt(sis);174+ } catch (IOException x) {175+ sis.close();176+ if (ioe != null) {177+ throw ioe;178+ } else {179+ throw x;180+ }181+ }182+183+ if (completionStatus != 0) {184+ sis.close();185+186+ // In the event of a protocol mismatch then the target VM187+ // returns a known error so that we can throw a reasonable188+ // error.189+ if (completionStatus == ATTACH_ERROR_BADVERSION) {190+ throw new IOException("Protocol mismatch with target VM");191+ }192+193+ // Special-case the "load" command so that the right exception is194+ // thrown.195+ if (cmd.equals("load")) {196+ throw new AgentLoadException("Failed to load agent library");197+ } else {198+ throw new IOException("Command failed in target VM");199+ }200+ }201+202+ // Return the input stream so that the command output can be read203+ return sis;204+ }205+206+ /*207+ * InputStream for the socket connection to get target VM208+ */209+ private class SocketInputStream extends InputStream {210+ int s;211+212+ public SocketInputStream(int s) {213+ this.s = s;214+ }215+216+ public synchronized int read() throws IOException {217+ byte b[] = new byte[1];218+ int n = this.read(b, 0, 1);219+ if (n == 1) {220+ return b[0] & 0xff;221+ } else {222+ return -1;223+ }224+ }225+226+ public synchronized int read(byte[] bs, int off, int len) throws IOException {227+ if ((off < 0) || (off > bs.length) || (len < 0) ||228+ ((off + len) > bs.length) || ((off + len) < 0)) {229+ throw new IndexOutOfBoundsException();230+ } else if (len == 0)231+ return 0;232+233+ return BSDVirtualMachine.read(s, bs, off, len);234+ }235+236+ public void close() throws IOException {237+ BSDVirtualMachine.close(s);238+ }239+ }240+241+242+ // Return the socket file for the given process.243+ // Checks working directory of process for .java_pid<pid>. If not244+ // found it looks in /tmp.245+ private String findSocketFile(int pid) {246+ // First check for a .java_pid<pid> file in the working directory247+ // of the target process248+ String fn = ".java_pid" + pid;249+ String path = getTmpDir() + fn;250+ File f = new File(path);251+252+ if (!f.exists()) {253+ return null; // not found254+ }255+ return path;256+ }257+258+ /*259+ * Write/sends the given to the target VM. String is transmitted in260+ * UTF-8 encoding.261+ */262+ private void writeString(int fd, String s) throws IOException {263+ if (s.length() > 0) {264+ byte b[];265+ try {266+ b = s.getBytes("UTF-8");267+ } catch (java.io.UnsupportedEncodingException x) { 268+ throw new InternalError();269+ } 270+ BSDVirtualMachine.write(fd, b, 0, b.length);271+ }272+ byte b[] = new byte[1];273+ b[0] = 0;274+ write(fd, b, 0, 1);275+ }276+277+278+ static native void sendQuitTo(int pid) throws IOException;279+280+ static native void checkPermissions(String path) throws IOException;281+282+ static native int socket() throws IOException;283+284+ static native void connect(int fd, String path) throws IOException;285+286+ static native void close(int fd) throws IOException;287+288+ static native int read(int fd, byte buf[], int off, int bufLen) throws IOException;289+290+ static native void write(int fd, byte buf[], int off, int bufLen) throws IOException;291+ static native void createAttachFile(String path);292+293+ static {294+ System.loadLibrary("attach");295+ }296+}...

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Source:TestJvm.java Github

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...4//import sun.jvmstat.monitor.Monitor;5//import sun.jvmstat.monitor.MonitoredHost;6//import sun.jvmstat.monitor.MonitoredVm;7//import sun.jvmstat.monitor.VmIdentifier;8//import sun.tools.attach.BsdVirtualMachine;9//10///**11// * User: fh12// * Date: 14-8-813// * Time: 15:4714// */15//public class TestJvm {16//17// // Oracle (Sun) HotSpot18// static final String YOUNG_GC_MONITOR_NAME = "sun.gc.collector.0.invocations";19// static final String FULL_GC_MONITOR_NAME = "sun.gc.collector.1.invocations";20//21// // Oracle (BEA) JRockit22// // static final String YOUNG_GC_MONITOR_NAME = 'jrockit.gc.latest.yc.number'23// // static final String FULL_GC_MONITOR_NAME = 'jrockit.gc.latest.oc.number'24//25// public static void main(String[] args) throws Exception {26// System.out.println("jvm....");27// //获取线程ID28// MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost("localhost");29// monitoredHost.activeVms().forEach((it) ->30// System.out.println("PID = " + it)31// );32//33//34// MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(new VmIdentifier((String) null));35//// Monitor ygc = monitoredVm.findByName(YOUNG_GC_MONITOR_NAME);36//// Monitor fgc = monitoredVm.findByName(FULL_GC_MONITOR_NAME);37//// System.out.println(ygc.getValue());38//// System.out.println(fgc.getValue());39// monitoredVm.findByPattern(".*").forEach((Monitor it) -> {40// System.out.println(it.getName() + " = " + it.getValue());41// });42//43// BsdVirtualMachine vm = (BsdVirtualMachine) VirtualMachine.attach("585");44//// vm.getSystemProperties();45//46// }47//}...

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BsdVirtualMachine

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1import java.io.IOException;2import java.util.Properties;3import sun.tools.attach.VirtualMachine;4import sun.tools.attach.BsdVirtualMachine;5import sun.tools.attach.LinuxVirtualMachine;6import sun.tools.attach.SolarisVirtualMachine;7import sun.tools.attach.WindowsVirtualMachine;8public class 4 {9 public static void main(String[] args) throws Exception {10 String pid = args[0];11 System.out.println("PID is " + pid);12 VirtualMachine vm = null;13 if (isWindows()) {14 vm = new WindowsVirtualMachine(pid);15 } else if (isLinux()) {16 vm = new LinuxVirtualMachine(pid);17 } else if (isSolaris()) {18 vm = new SolarisVirtualMachine(pid);19 } else if (isBsd()) {20 vm = new BsdVirtualMachine(pid);21 } else {22 throw new IOException("Unsupported platform");23 }24 vm.attach();25 Properties sysProps = vm.getSystemProperties();26 System.out.println(sysProps);27 vm.detach();28 }29 private static boolean isWindows() {30 String os = System.getProperty("os.name");31 return os.startsWith("Windows");32 }33 private static boolean isLinux() {34 String os = System.getProperty("os.name");35 return os.startsWith("Linux");36 }37 private static boolean isSolaris() {38 String os = System.getProperty("os.name");39 return os.startsWith("SunOS");40 }41 private static boolean isBsd() {42 String os = System.getProperty("os.name");43 return os.startsWith("FreeBSD") || os.startsWith("OpenBSD") || os.startsWith("NetBSD");44 }45}46import java.util.*;47import java.io.*;48import java.lang.reflect.*;49public class 5 {50 public static void main(String[] args) throws Exception {51 String pid = args[0];52 System.out.println("PID is " + pid);53 VirtualMachine vm = null;54 if (isWindows()) {55 vm = new WindowsVirtualMachine(pid);56 } else if (isLinux()) {57 vm = new LinuxVirtualMachine(pid);58 } else if (isSolaris()) {59 vm = new SolarisVirtualMachine(pid);60 } else if (isBsd()) {61 vm = new BsdVirtualMachine(pid);62 } else {63 throw new IOException("Unsupported platform");64 }

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BsdVirtualMachine

Using AI Code Generation

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1import java.io.IOException;2import java.util.Properties;3import com.sun.tools.attach.VirtualMachine;4import com.sun.tools.attach.VirtualMachineDescriptor;5{6public static void main(String[] args) throws Exception7{8List<VirtualMachineDescriptor> vms = VirtualMachine.list();9for (VirtualMachineDescriptor vmd : vms)10{11String displayName = vmd.displayName();12String id = vmd.id();13System.out.println(displayName + ": " + id);14}15}16}

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BsdVirtualMachine

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1import sun.tools.attach.*;2import java.util.*;3import java.io.*;4import java.net.*;5import java.lang.management.*;6import java.lang.reflect.*;7import javax.management.*;8import javax.management.remote.*;9public class 4 {10 public static void main(String args[]) throws Exception {11 BsdVirtualMachine vm = BsdVirtualMachine.attach(args[0]);12 String connectorAddress = vm.startManagementAgent();13 JMXServiceURL url = new JMXServiceURL(connectorAddress);14 JMXConnector connector = JMXConnectorFactory.connect(url);15 MBeanServerConnection mbsc = connector.getMBeanServerConnection();16 ObjectName name = new ObjectName("java.lang:type=Runtime");17 System.out.println("System Properties: " + mbsc.getAttribute(name, "SystemProperties"));18 }19}20import sun.tools.attach.*;21import java.util.*;22import java.io.*;23import java.net.*;24import java.lang.management.*;25import java.lang.reflect.*;26import javax.management.*;27import javax.management.remote.*;28public class 5 {29 public static void main(String args[]) throws Exception {30 HotSpotVirtualMachine vm = HotSpotVirtualMachine.attach(args[0]);31 String connectorAddress = vm.startManagementAgent();32 JMXServiceURL url = new JMXServiceURL(connectorAddress);33 JMXConnector connector = JMXConnectorFactory.connect(url);34 MBeanServerConnection mbsc = connector.getMBeanServerConnection();35 ObjectName name = new ObjectName("java.lang:type=Runtime");36 System.out.println("System Properties: " + mbsc.getAttribute(name, "SystemProperties"));37 }38}39import java.lang.management.*;40import java.lang.reflect.*;41import javax.management.*;42import javax.management.remote.*;43public class 6 {44 public static void main(String args[]) throws Exception {45 MBeanServer server = ManagementFactory.getPlatformMBeanServer();46 ObjectName name = new ObjectName("com.sun.management:type=HotSpotDiagnostic");47 HotSpotDiagnosticMXBean bean = JMX.newMXBeanProxy(server, name, HotSpotDiagnosticMXBean.class);48 bean.dumpHeap(args[0], true);49 }50}51import java.lang.management.*;52import java.lang.reflect.*;53import javax.management.*;54import javax.management

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BsdVirtualMachine

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1import com.sun.tools.attach.*;2import java.io.*;3import java.util.*;4{5public static void main(String args[]) throws Exception6{7List l = VirtualMachine.list();8for (VirtualMachineDescriptor vmd : l)9{10String id = vmd.id();11String displayName = vmd.displayName();12System.out.println(id+" "+displayName);13VirtualMachine vm = VirtualMachine.attach(id);14vm.loadAgent("D:/agent.jar");15vm.detach();16}17}18}

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BsdVirtualMachine

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1import java.io.*;2import java.util.*;3import java.lang.reflect.*;4import sun.tools.attach.*;5public class 4 {6 public static void main(String[] args) throws Exception {7 if (args.length != 1) {8 System.err.println("Usage: java 4 <pid>");9 System.exit(1);10 }11 String pid = args[0];12 BsdVirtualMachine vm = BsdVirtualMachine.attach(pid);13 String[] cmdLine = vm.getCommandLine();14 for (int i = 0; i < cmdLine.length; i++) {15 System.out.println(cmdLine[i]);16 }17 }18}19 at sun.tools.attach.BsdVirtualMachine.attach(Native Method)20 at sun.tools.attach.BsdVirtualMachine.attach(BsdVirtualMachine.java:54)21 at 4.main(4.java:14)22 at sun.tools.attach.BsdVirtualMachine.attach(Native Method)23 at sun.tools.attach.BsdVirtualMachine.attach(BsdVirtualMachine.java:54)24 at 4.main(4.java:14)

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BsdVirtualMachine

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1import java.io.*;2import java.util.*;3import sun.tools.attach.*;4{5public static void main(String[] args) throws Exception6{7if (args.length < 1)8{9System.out.println("Usage: 4 <pid>");10System.exit(-1);11}12String pid = args[0];13BsdVirtualMachine vm = BsdVirtualMachine.attach(pid);14System.out.println("Attached to process " + pid);15System.out.println("Stack trace of all threads:");16System.out.println(vm.getThreadStackTrace());17vm.detach();18}19}20at 4.main(4.java:16)21at java.lang.Thread.sleep(Native Method)22at 4$1.run(4.java:11)23at java.lang.Thread.sleep(Native Method)24at 4$2.run(4.java:21)25at java.lang.Thread.sleep(Native Method)26at 4$3.run(4.java:31)27at 4.main(4.java:16)28at java.lang.Thread.sleep(Native Method)29at 4$1.run(4.java:11)30at java.lang.Thread.sleep(Native Method)31at 4$2.run(4.java:21)32at java.lang.Thread.sleep(Native Method)33at 4$3.run(4.java:31)

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BsdVirtualMachine

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1import java.io.IOException;2import java.util.List;3import com.sun.tools.attach.VirtualMachine;4import com.sun.tools.attach.VirtualMachineDescriptor;5public class 4 {6 public static void main(String[] args) throws IOException {7 List<VirtualMachineDescriptor> list = VirtualMachine.list();

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BsdVirtualMachine

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1import java.io.*;2import java.util.*;3import sun.tools.attach.*;4{5public static void main(String args[])6{7{8String pid = BsdVirtualMachine.getMyPid();9System.out.println("The process id of java process is "+pid);10}11catch(Exception e)12{13System.out.println("Exception: "+e);14}15}16}

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