/*
* Copyright ( c ) 1999 , 2008 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
import com.sun.jdi.*;
import com.sun.jdi.connect.*;
import com.sun.jdi.request.EventRequestManager;
import java.util.*;
import java.io.*;
/**
* Manages a VM conection for the JDI test framework .
*/
class VMConnection {
private VirtualMachine vm;
private Process process = null ;
private int outputCompleteCount = 0 ;
private final Connector connector;
private final Map connectorArgs;
private final int traceFlags;
/**
* Return a String containing VM Options to pass to the debugee
* or an empty string if there are none .
* These are read from TESTVMOPTS and / or TESTJAVAOPTS .
*/
static public String getDebuggeeVMOptions() {
String retVal = "" ;
// When we run under jtreg, test.classes contains the pathname of
// the dir in which the .class files will be placed.
String testClasses = System.getProperty("test.classes" );
if (testClasses == null ) {
return retVal;
}
retVal += "-classpath " + testClasses;
String vmOpts = System.getProperty("test.vm.opts" );
System.out.println("vmOpts: '" + vmOpts + "'" );
if (vmOpts != null && !vmOpts.trim().isEmpty()) {
retVal += " " + vmOpts;
}
String javaOpts = System.getProperty("test.java.opts" );
System.out.println("javaOpts: '" + javaOpts + "'" );
if (javaOpts != null && !javaOpts.trim().isEmpty()) {
retVal += " " + javaOpts;
}
return retVal;
}
static public String[] insertDebuggeeVMOptions(String[] cmdLine) {
String opts = getDebuggeeVMOptions();
if (opts.equals("" )) {
return cmdLine;
}
// Insert the options at position 1. Blanks in args are not allowed!
String[] v1 = opts.split(" +" );
String[] retVal = new String[cmdLine.length + v1.length];
retVal[0 ] = cmdLine[0 ];
System.arraycopy(v1, 0 , retVal, 1 , v1.length);
System.arraycopy(cmdLine, 1 , retVal, v1.length + 1 , cmdLine.length - 1 );
return retVal;
}
private Connector findConnector(String name) {
List connectors = Bootstrap.virtualMachineManager().allConnectors();
Iterator iter = connectors.iterator();
while (iter.hasNext()) {
Connector connector = (Connector)iter.next();
if (connector.name().equals(name)) {
return connector;
}
}
return null ;
}
private Map parseConnectorArgs(Connector connector, String argString) {
StringTokenizer tokenizer = new StringTokenizer(argString, "," );
Map arguments = connector.defaultArguments();
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
int index = token.indexOf('=' );
if (index == -1 ) {
throw new IllegalArgumentException("Illegal connector argument: " +
token);
}
String name = token.substring(0 , index);
String value = token.substring(index + 1 );
Connector.Argument argument = (Connector.Argument)arguments.get(name);
if (argument == null ) {
throw new IllegalArgumentException("Argument " + name +
"is not defined for connector: " +
connector.name());
}
argument.setValue(value);
}
return arguments;
}
VMConnection(String connectSpec, int traceFlags) {
String nameString;
String argString;
int index = connectSpec.indexOf(':' );
if (index == -1 ) {
nameString = connectSpec;
argString = "" ;
} else {
nameString = connectSpec.substring(0 , index);
argString = connectSpec.substring(index + 1 );
}
connector = findConnector(nameString);
if (connector == null ) {
throw new IllegalArgumentException("No connector named: " +
nameString);
}
connectorArgs = parseConnectorArgs(connector, argString);
this .traceFlags = traceFlags;
}
synchronized VirtualMachine open() {
if (connector instanceof LaunchingConnector) {
vm = launchTarget();
} else if (connector instanceof AttachingConnector) {
vm = attachTarget();
} else if (connector instanceof ListeningConnector) {
vm = listenTarget();
} else {
throw new InternalError("Invalid connect type" );
}
vm.setDebugTraceMode(traceFlags);
System.out.println("JVM version:" + vm.version());
System.out.println("JDI version: " + Bootstrap.virtualMachineManager().majorInterfaceVersion() +
"." + Bootstrap.virtualMachineManager().minorInterfaceVersion());
System.out.println("JVM description: " + vm.description());
return vm;
}
boolean setConnectorArg(String name, String value) {
/*
* Too late if the connection already made
*/
if (vm != null ) {
return false ;
}
Connector.Argument argument = (Connector.Argument)connectorArgs.get(name);
if (argument == null ) {
return false ;
}
argument.setValue(value);
return true ;
}
String connectorArg(String name) {
Connector.Argument argument = (Connector.Argument)connectorArgs.get(name);
if (argument == null ) {
return "" ;
}
return argument.value();
}
public synchronized VirtualMachine vm() {
if (vm == null ) {
throw new InternalError("VM not connected" );
} else {
return vm;
}
}
boolean isOpen() {
return (vm != null );
}
boolean isLaunch() {
return (connector instanceof LaunchingConnector);
}
Connector connector() {
return connector;
}
boolean isListen() {
return (connector instanceof ListeningConnector);
}
boolean isAttach() {
return (connector instanceof AttachingConnector);
}
private synchronized void notifyOutputComplete() {
outputCompleteCount++;
notifyAll();
}
private synchronized void waitOutputComplete() {
// Wait for stderr and stdout
if (process != null ) {
while (outputCompleteCount < 2 ) {
try {wait();} catch (InterruptedException e) {}
}
}
}
public void disposeVM() {
try {
if (vm != null ) {
vm.dispose();
vm = null ;
}
} finally {
if (process != null ) {
process.destroy();
process = null ;
}
waitOutputComplete();
}
}
private void dumpStream(InputStream stream) throws IOException {
PrintStream outStream = System.out;
BufferedReader in =
new BufferedReader(new InputStreamReader(stream));
String line;
while (true ){
try {
line = in.readLine();
if ( line == null ){
break ;
}
outStream.println(line);
}
catch (IOException ieo){
/**
* IOException with " Bad file number . . . " can happen
* when the debuggee process is destroyed . Ignore such exception .
*
*/
String s = ieo.getMessage();
if ( s.startsWith("Bad file number" ) ){
break ;
}
throw ieo;
}
catch (NullPointerException npe){
throw new IOException("Bug 4728096 in Java io may cause in.readLine() to throw a NULL pointer exception" );
}
}
}
/**
* Create a Thread that will retrieve and display any output .
* Needs to be high priority , else debugger may exit before
* it can be displayed .
*/
private void displayRemoteOutput(final InputStream stream) {
Thread thr = new Thread ("output reader" ) {
public void run() {
try {
dumpStream(stream);
} catch (IOException ex) {
System.err.println("IOException reading output of child java interpreter:"
+ ex.getMessage());
} finally {
notifyOutputComplete();
}
}
};
thr.setPriority(Thread .MAX_PRIORITY-1 );
thr.start();
}
private void dumpFailedLaunchInfo(Process process) {
try {
dumpStream(process.getErrorStream());
dumpStream(process.getInputStream());
} catch (IOException e) {
System.err.println("Unable to display process output: " +
e.getMessage());
}
}
/* launch child target vm */
private VirtualMachine launchTarget() {
LaunchingConnector launcher = (LaunchingConnector)connector;
try {
VirtualMachine vm = launcher.launch(connectorArgs);
process = vm.process();
displayRemoteOutput(process.getErrorStream());
displayRemoteOutput(process.getInputStream());
return vm;
} catch (IOException ioe) {
ioe.printStackTrace();
System.err.println("\n Unable to launch target VM." );
} catch (IllegalConnectorArgumentsException icae) {
icae.printStackTrace();
System.err.println("\n Internal debugger error." );
} catch (VMStartException vmse) {
System.err.println(vmse.getMessage() + "\n" );
dumpFailedLaunchInfo(vmse.process());
System.err.println("\n Target VM failed to initialize." );
}
return null ; // Shuts up the compiler
}
/* attach to running target vm */
private VirtualMachine attachTarget() {
AttachingConnector attacher = (AttachingConnector)connector;
try {
return attacher.attach(connectorArgs);
} catch (IOException ioe) {
ioe.printStackTrace();
System.err.println("\n Unable to attach to target VM." );
} catch (IllegalConnectorArgumentsException icae) {
icae.printStackTrace();
System.err.println("\n Internal debugger error." );
}
return null ; // Shuts up the compiler
}
/* listen for connection from target vm */
private VirtualMachine listenTarget() {
ListeningConnector listener = (ListeningConnector)connector;
try {
String retAddress = listener.startListening(connectorArgs);
System.out.println("Listening at address: " + retAddress);
vm = listener.accept(connectorArgs);
listener.stopListening(connectorArgs);
return vm;
} catch (IOException ioe) {
ioe.printStackTrace();
System.err.println("\n Unable to attach to target VM." );
} catch (IllegalConnectorArgumentsException icae) {
icae.printStackTrace();
System.err.println("\n Internal debugger error." );
}
return null ; // Shuts up the compiler
}
}
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