Java example source code file (MethodExitReturnValuesTest.java)
The MethodExitReturnValuesTest.java Java example source code
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
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* 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.
*
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*/
/**
* @test
* @bug 4195445 6204179
* @summary JDWP, JDI: Add return value to Method Exit Event
* @author Jim Holmlund
*
* @run build TestScaffold VMConnection TargetListener TargetAdapter
* @run compile -g MethodExitReturnValuesTest.java
* @run main MethodExitReturnValuesTest
*/
import com.sun.jdi.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;
import java.util.*;
import java.net.URLClassLoader;
import java.net.URL;
import java.lang.reflect.Array;
/*
* This test has a debuggee which calls a static method
* for each kind of JDI Value, and then an instance method
* for each.
* The debugger turns on MethodExitEvents and checks
* that the right return values are included in the MethodExitEvents.
* Each value is stored in a static var in the debuggee. The debugger
* gets the values from these static vars to check for correct
* return values in the MethodExitEvents.
*/
class MethodExitReturnValuesTarg {
// These are the values that will be returned by the methods
static URL[] urls = new URL[1];
public static byte byteValue = 89;
public static char charValue = 'x';
public static double doubleValue = 2.2;
public static float floatValue = 3.3f;
public static int intValue = 1;
public static long longValue = Long.MAX_VALUE;
public static short shortValue = 8;
public static boolean booleanValue = false;
public static Class classValue = Object.class;
public static ClassLoader classLoaderValue;
{
try {
urls[0] = new URL("hi there");
} catch (java.net.MalformedURLException ee) {
}
classLoaderValue = new URLClassLoader(urls);
}
public static Thread threadValue;
public static ThreadGroup threadGroupValue;
public static String stringValue = "abc";
public static int[] intArrayValue = new int[] {1, 2, 3};
public static MethodExitReturnValuesTarg objectValue =
new MethodExitReturnValuesTarg();
public String ivar = stringValue;
// arrays to be used in calls to native methods Array.get...(....)
public static byte[] arrByte = new byte[] {byteValue};
public static char[] arrChar = new char[] {charValue};
public static double[] arrDouble = new double[] {doubleValue};
public static float[] arrFloat = new float[] {floatValue};
public static int[] arrInt = new int[] {intValue};
public static long[] arrLong = new long[] {longValue};
public static short[] arrShort = new short[] {shortValue};
public static boolean[] arrBoolean = new boolean[] {booleanValue};
public static Object[] arrObject = new Object[] {objectValue};
// Used to show which set of tests follows
public static String s_show(String p1) { return p1;}
// These are the static methods
public static byte s_bytef() { return byteValue; }
public static char s_charf() { return charValue; }
public static double s_doublef() { return doubleValue; }
public static float s_floatf() { return floatValue; }
public static int s_intf() { return intValue; }
public static long s_longf() { return longValue; }
public static short s_shortf() { return shortValue; }
public static boolean s_booleanf(){ return booleanValue; }
public static String s_stringf() { return stringValue; }
public static Class s_classf() { return classValue; }
public static ClassLoader s_classLoaderf()
{ return classLoaderValue; }
public static Thread s_threadf() { threadValue = Thread.currentThread();
return threadValue; }
public static ThreadGroup s_threadGroupf()
{ threadGroupValue = threadValue.getThreadGroup();
return threadGroupValue; }
public static int[] s_intArrayf() { return intArrayValue; }
public static Object s_nullObjectf() { return null; }
public static Object s_objectf() { return objectValue; }
public static void s_voidf() {}
// These are the instance methods
public byte i_bytef() { return byteValue; }
public char i_charf() { return charValue; }
public double i_doublef() { return doubleValue; }
public float i_floatf() { return floatValue; }
public int i_intf() { return intValue; }
public long i_longf() { return longValue; }
public short i_shortf() { return shortValue; }
public boolean i_booleanf() { return booleanValue; }
public String i_stringf() { return stringValue; }
public Class i_classf() { return classValue; }
public ClassLoader i_classLoaderf()
{ return classLoaderValue; }
public Thread i_threadf() { return threadValue; }
public ThreadGroup i_threadGroupf()
{ return threadGroupValue; }
public int[] i_intArrayf() { return intArrayValue; }
public Object i_nullObjectf() { return null; }
public Object i_objectf() { return objectValue; }
public void i_voidf() {}
static void doit(MethodExitReturnValuesTarg xx) {
s_show("========== Testing static methods ================");
s_bytef();
s_charf();
s_doublef();
s_floatf();
s_intf();
s_longf();
s_shortf();
s_booleanf();
s_stringf();
s_classf();
s_classLoaderf();
s_threadf();
s_threadGroupf();
s_intArrayf();
s_nullObjectf();
s_objectf();
s_voidf();
s_show("========== Testing instance methods ================");
xx.i_bytef();
xx.i_charf();
xx.i_doublef();
xx.i_floatf();
xx.i_intf();
xx.i_longf();
xx.i_shortf();
xx.i_booleanf();
xx.i_stringf();
xx.i_intArrayf();
xx.i_classf();
xx.i_classLoaderf();
xx.i_threadf();
xx.i_threadGroupf();
xx.i_nullObjectf();
xx.i_objectf();
xx.i_voidf();
// Prove it works for native methods too
s_show("========== Testing native methods ================");
StrictMath.sin(doubleValue);
Array.getByte(arrByte, 0);
Array.getChar(arrChar, 0);
Array.getDouble(arrDouble, 0);
Array.getFloat(arrFloat, 0);
Array.getInt(arrInt, 0);
Array.getLong(arrLong, 0);
Array.getShort(arrShort, 0);
Array.getBoolean(arrBoolean, 0);
Array.get(arrObject, 0);
stringValue.intern();
}
public static void main(String[] args) {
// The debugger will stop at the start of main,
// enable method exit events, and then do
// a resume.
MethodExitReturnValuesTarg xx =
new MethodExitReturnValuesTarg();
doit(xx);
}
}
public class MethodExitReturnValuesTest extends TestScaffold {
// Classes which we are interested in
private List includes = Arrays.asList(new String[] {
"MethodExitReturnValuesTarg",
"java.lang.reflect.Array",
"java.lang.StrictMath",
"java.lang.String"
});
static VirtualMachineManager vmm ;
ClassType targetClass;
Field theValueField;
static int successes = 0;
static final int expectedSuccesses = 44; // determined by inspection :-)
MethodExitReturnValuesTest(String args[]) {
super(args);
}
public static void main(String[] args) throws Exception {
MethodExitReturnValuesTest meee = new MethodExitReturnValuesTest(args);
vmm = Bootstrap.virtualMachineManager();
meee.startTests();
}
// These are the methods that check for correct return values.
void ckByteValue(Value retValue) {
Field theValueField = targetClass.fieldByName("byteValue");
ByteValue theValue = (ByteValue)targetClass.getValue(theValueField);
byte vv = theValue.value();
byte rv = ((ByteValue)retValue).value();
if (vv != rv) {
failure("failure: byte: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: byte " + rv);
successes++;
}
}
void ckCharValue(Value retValue) {
Field theValueField = targetClass.fieldByName("charValue");
CharValue theValue = (CharValue)targetClass.getValue(theValueField);
char vv = theValue.value();
char rv = ((CharValue)retValue).value();
if (vv != rv) {
failure("failure: char: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: char " + rv);
successes++;
}
}
void ckDoubleValue(Value retValue) {
Field theValueField = targetClass.fieldByName("doubleValue");
DoubleValue theValue = (DoubleValue)targetClass.getValue(theValueField);
double vv = theValue.value();
double rv = ((DoubleValue)retValue).value();
if (vv != rv) {
failure("failure: double: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: double " + rv);
successes++;
}
}
void ckFloatValue(Value retValue) {
Field theValueField = targetClass.fieldByName("floatValue");
FloatValue theValue = (FloatValue)targetClass.getValue(theValueField);
float vv = theValue.value();
float rv = ((FloatValue)retValue).value();
if (vv != rv) {
failure("failure: float: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: float " + rv);
successes++;
}
}
void ckIntValue(Value retValue) {
Field theValueField = targetClass.fieldByName("intValue");
IntegerValue theValue = (IntegerValue)targetClass.getValue(theValueField);
int vv = theValue.value();
int rv = ((IntegerValue)retValue).value();
if (vv != rv) {
failure("failure: int: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: int " + rv);
successes++;
}
}
void ckLongValue(Value retValue) {
Field theValueField = targetClass.fieldByName("longValue");
LongValue theValue = (LongValue)targetClass.getValue(theValueField);
long vv = theValue.value();
long rv = ((LongValue)retValue).value();
if (vv != rv) {
failure("failure: long: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: long " + rv);
successes++;
}
}
void ckShortValue(Value retValue) {
Field theValueField = targetClass.fieldByName("shortValue");
ShortValue theValue = (ShortValue)targetClass.getValue(theValueField);
short vv = theValue.value();
short rv = ((ShortValue)retValue).value();
if (vv != rv) {
failure("failure: short: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: short " + rv);
successes++;
}
}
void ckBooleanValue(Value retValue) {
Field theValueField = targetClass.fieldByName("booleanValue");
BooleanValue theValue = (BooleanValue)targetClass.getValue(theValueField);
boolean vv = theValue.value();
boolean rv = ((BooleanValue)retValue).value();
if (vv != rv) {
failure("failure: boolean: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: boolean " + rv);
successes++;
}
}
void ckStringValue(Value retValue) {
Field theValueField = targetClass.fieldByName("stringValue");
StringReference theValue = (StringReference)targetClass.getValue(theValueField);
String vv = theValue.value();
String rv = ((StringReference)retValue).value();
if (vv != rv) {
failure("failure: String: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: String: " + rv);
successes++;
}
}
void ckClassValue(Value retValue) {
Field theValueField = targetClass.fieldByName("classValue");
ClassObjectReference vv = (ClassObjectReference)targetClass.
getValue(theValueField);
ClassObjectReference rv = (ClassObjectReference)retValue;
if (vv != rv) {
failure("failure: Class: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: Class: " + rv);
successes++;
}
}
void ckClassLoaderValue(Value retValue) {
Field theValueField = targetClass.fieldByName("classLoaderValue");
ClassLoaderReference vv = (ClassLoaderReference)targetClass.
getValue(theValueField);
ClassLoaderReference rv = (ClassLoaderReference)retValue;
if (vv != rv) {
failure("failure: ClassLoader: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: ClassLoader: " + rv);
successes++;
}
}
void ckThreadValue(Value retValue) {
Field theValueField = targetClass.fieldByName("threadValue");
ThreadReference vv = (ThreadReference)targetClass.
getValue(theValueField);
ThreadReference rv = (ThreadReference)retValue;
if (vv != rv) {
failure("failure: Thread: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: Thread: " + rv);
successes++;
}
}
void ckThreadGroupValue(Value retValue) {
Field theValueField = targetClass.fieldByName("threadGroupValue");
ThreadGroupReference vv = (ThreadGroupReference)targetClass.
getValue(theValueField);
ThreadGroupReference rv = (ThreadGroupReference)retValue;
if (vv != rv) {
failure("failure: ThreadgGroup: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: ThreadGroup: " + rv);
successes++;
}
}
void ckArrayValue(Value retValue) {
Field theValueField = targetClass.fieldByName("intArrayValue");
ArrayReference theValue = (ArrayReference)targetClass.getValue(theValueField);
IntegerValue theElem2 = (IntegerValue)theValue.getValue(2);
ArrayReference theRetValue = (ArrayReference)retValue;
IntegerValue retElem2 = (IntegerValue)theRetValue.getValue(2);
int vv = theElem2.value();
int rv = retElem2.value();
if (vv != rv) {
failure("failure: in[2]: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: int[2]: " + rv);
successes++;
}
}
void ckNullObjectValue(Value retValue) {
if (retValue != null) {
failure("failure: NullObject: expected " + null + ", got " + retValue);
} else {
System.out.println("Passed: NullObject: " + retValue);
successes++;
}
}
void ckObjectValue(Value retValue) {
// We will check the ivar field which we know contains
// the value of 'stringValue'
Field theValueField = targetClass.fieldByName("stringValue");
StringReference theValue = (StringReference)targetClass.getValue(theValueField);
Field theIVarField = targetClass.fieldByName("ivar");
ObjectReference theRetValue = (ObjectReference)retValue;
StringReference theRetValField = (StringReference)theRetValue.getValue(theIVarField);
String vv = theValue.value();
String rv = theRetValField.value();
if (vv != rv) {
failure("failure: Object: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: Object: " + rv);
successes++;
}
}
void ckVoidValue(Value retValue) {
System.out.println("Passed: Void");
successes++;
}
void ckSinValue(Value retValue) {
double rv = ((DoubleValue)retValue).value();
double vv = StrictMath.sin(MethodExitReturnValuesTarg.doubleValue);
if (rv != vv) {
failure("failure: sin: expected " + vv + ", got " + rv);
} else {
System.out.println("Passed: sin " + rv);
successes++;
}
}
// This is the MethodExitEvent handler.
public void methodExited(MethodExitEvent event) {
String origMethodName = event.method().name();
if (!includes.contains(event.method().declaringType().name())) {
return;
}
if (vmm.majorInterfaceVersion() >= 1 &&
vmm.minorInterfaceVersion() >= 6 &&
vm().canGetMethodReturnValues()) {
Value retValue = event.returnValue();
if ("sin".equals(origMethodName)) {
ckSinValue(retValue);
return;
}
if (!origMethodName.startsWith("s_") &&
!origMethodName.startsWith("i_")) {
// Check native methods
if ("getByte".equals(origMethodName)) ckByteValue(retValue);
else if ("getChar".equals(origMethodName)) ckCharValue(retValue);
else if ("getDouble".equals(origMethodName)) ckDoubleValue(retValue);
else if ("getFloat".equals(origMethodName)) ckFloatValue(retValue);
else if ("getInt".equals(origMethodName)) ckIntValue(retValue);
else if ("getLong".equals(origMethodName)) ckLongValue(retValue);
else if ("getShort".equals(origMethodName)) ckShortValue(retValue);
else if ("getBoolean".equals(origMethodName)) ckBooleanValue(retValue);
else if ("getObject".equals(origMethodName)) ckObjectValue(retValue);
else if ("intern".equals(origMethodName)) ckStringValue(retValue);
return;
}
String methodName = origMethodName.substring(2);
if ("show".equals(methodName)) {
System.out.println(retValue);
return;
}
if ("bytef".equals(methodName)) ckByteValue(retValue);
else if ("charf".equals(methodName)) ckCharValue(retValue);
else if ("doublef".equals(methodName)) ckDoubleValue(retValue);
else if ("floatf".equals(methodName)) ckFloatValue(retValue);
else if ("intf".equals(methodName)) ckIntValue(retValue);
else if ("longf".equals(methodName)) ckLongValue(retValue);
else if ("shortf".equals(methodName)) ckShortValue(retValue);
else if ("booleanf".equals(methodName)) ckBooleanValue(retValue);
else if ("stringf".equals(methodName)) ckStringValue(retValue);
else if ("classf".equals(methodName)) ckClassValue(retValue);
else if ("classLoaderf".equals(methodName)) ckClassLoaderValue(retValue);
else if ("threadf".equals(methodName)) ckThreadValue(retValue);
else if ("threadGroupf".equals(methodName)) ckThreadGroupValue(retValue);
else if ("intArrayf".equals(methodName)) ckArrayValue(retValue);
else if ("nullObjectf".equals(methodName)) ckNullObjectValue(retValue);
else if ("objectf".equals(methodName)) ckObjectValue(retValue);
else if ("voidf".equals(methodName)) ckVoidValue(retValue);
else {
failure("failure: Unknown methodName: " + origMethodName);
}
} else {
System.out.println("Return Value not available for method: " + origMethodName);
}
}
protected void runTests() throws Exception {
/*
* Get to the top of main()
* to determine targetClass and mainThread
*/
BreakpointEvent bpe = startToMain("MethodExitReturnValuesTarg");
targetClass = (ClassType)bpe.location().declaringType();
mainThread = bpe.thread();
theValueField = targetClass.fieldByName("theValue");
/*
* Ask for method exit events
*/
MethodExitRequest exitRequest =
eventRequestManager().createMethodExitRequest();
exitRequest.addThreadFilter(mainThread);
int sessionSuspendPolicy = EventRequest.SUSPEND_ALL;
//sessionSuspendPolicy = EventRequest.SUSPEND_EVENT_THREAD;
//sessionSuspendPolicy = EventRequest.SUSPEND_NONE;
exitRequest.setSuspendPolicy(sessionSuspendPolicy);
exitRequest.enable();
/*
* We are now set up to receive the notifications we want.
* Here we go. This adds 'this' as a listener so
* that our handlers above will be called.
*/
listenUntilVMDisconnect();
if (successes != expectedSuccesses) {
failure("failure: Expected " + expectedSuccesses + ", but got " + successes);
}
System.out.println("All done, " + successes + " passed");
if (!testFailed) {
System.out.println();
System.out.println("MethodExitReturnValuesTest: passed");
} else {
System.out.println();
System.out.println("MethodExitReturnValuesTest: failed");
throw new Exception("MethodExitReturnValuesTest: failed");
}
}
}
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