Examples with JCJavaClass com.ibm.dtfj.java.javacore.JCJavaClass used on opensource projects

Example 1 with JCJavaClass

use of com.ibm.dtfj.java.javacore.JCJavaClass in project openj9 by eclipse.

the class JavaRuntimeBuilder method addJavaThread.

/**
 * If successfully added a JavaThread, or updated an existing JavaThread, return the javathread, or otherwise
 * throw an exception. Note that a javathread cannot be successfully added if no valid threadID is passed.
 * <br><br>
 * REQUIREMENT: Thread Id must be valid to properly create a Java Thread, or exception is thrown.
 *
 * @throws BuilderFailureException if arguments lead to an invalid DTFJ object, particularly an invalid threadID
 * @return a non null JavaThread that was successfully added or updated.
 */
public JavaThread addJavaThread(ImageThread imageThread, String name, long tid, long j9thread_t, long javaObjID, long jniEnv, String state, int priority, long blockingObject, String blockingObjectClass) throws BuilderFailureException {
    try {
        if (j9thread_t != IBuilderData.NOT_AVAILABLE && jniEnv != IBuilderData.NOT_AVAILABLE) {
            // Save the JNIEnv for later
            ImagePointer pointer = fAddressSpace.getPointer(jniEnv);
            j9ThreadToJNIEnv.put(new Long(j9thread_t), pointer);
        }
        if (!fAddressSpace.isValidAddressID(tid)) {
            throw new JCInvalidArgumentsException("Must pass a valid thread id");
        }
        JCJavaThread javaThread = getJavaRuntime().findJavaThread(tid);
        if (javaThread == null) {
            ImagePointer pointer = fAddressSpace.getPointer(tid);
            javaThread = new JCJavaThread(getJavaRuntime(), pointer);
        }
        javaThread.setName(name);
        javaThread.setPriority(priority);
        javaThread.setState(state);
        javaThread.setImageThread((JCImageThread) imageThread);
        if (jniEnv == IBuilderData.NOT_AVAILABLE) {
            // Retrieve the JNIEnv
            ImagePointer pointer = (ImagePointer) j9ThreadToJNIEnv.get(new Long(j9thread_t));
            if (pointer != null) {
                // Set it for 1.4.2
                javaThread.setJNIEnv(pointer);
            } else {
                // Else TID for J9 seems to be JNIEnv
                javaThread.setJNIEnv(javaThread.getThreadID());
            }
        }
        /*
			 * Add the object only if the object ID is valid.
			 */
        if (fAddressSpace.isValidAddressID(javaObjID)) {
            // Make the type just java.lang.Thread - later we can do better if there is a stack trace.
            JCJavaClass jClass = generateJavaClass(getJavaRuntime(), "java/lang/Thread", IBuilderData.NOT_AVAILABLE);
            ImagePointer pointerObjectID = fAddressSpace.getPointer(javaObjID);
            JCJavaObject jobject = new JCJavaObject(pointerObjectID, jClass);
            javaThread.setObject(jobject);
        }
        if (fAddressSpace.isValidAddressID(blockingObject)) {
            JCJavaClass jClass = generateJavaClass(getJavaRuntime(), blockingObjectClass, IBuilderData.NOT_AVAILABLE);
            ImagePointer pointerObjectID = fAddressSpace.getPointer(javaObjID);
            JCJavaObject jobject = new JCJavaObject(pointerObjectID, jClass);
            javaThread.setBlockingObject(jobject);
        }
        return javaThread;
    } catch (JCInvalidArgumentsException e) {
        throw new BuilderFailureException(e);
    }
}

Example 2 with JCJavaClass

use of com.ibm.dtfj.java.javacore.JCJavaClass in project openj9 by eclipse.

the class JavaRuntimeBuilder method generateJavaClass.

/**
 * Either retrieves an existing java class registered with the java runtime or it creates one and it fills in missing information,
 * if the latter is available.
 * <br><br>
 * A valid runtime and class name must be passed in order to successfully generate a java class. An invalid argument exception is
 * thrown if either one of them is invalid.
 * <br><br>
 * A null value should not be returned, as this indicates an error was encountered. Instead, throw the
 * appropriate exception.
 *
 * @param runtime required
 * @param name required
 * @param classID optional
 * @return added or updated JavaClass, or exception thrown if invalid arguments passed.
 * @throws JCInvalidArgumentsException
 */
private JCJavaClass generateJavaClass(JCJavaRuntime runtime, String name, long classID) throws JCInvalidArgumentsException {
    if (name != null) {
        if (fAddressSpace.isValidAddressID(classID)) {
            JCJavaClass jClass = runtime.findJavaClass(classID);
            if (jClass == null) {
                jClass = runtime.findJavaClass(name);
                if (jClass != null) {
                    ImagePointer ip = jClass.getID();
                    if (ip == null) {
                        jClass.setID(classID);
                    } else {
                        jClass = new JCJavaClass(runtime, name);
                        jClass.setID(classID);
                    }
                } else {
                    jClass = new JCJavaClass(runtime, name);
                    jClass.setID(classID);
                }
            }
            return jClass;
        }
        JCJavaClass jClass = runtime.findJavaClass(name);
        if (jClass == null) {
            jClass = new JCJavaClass(runtime, name);
        }
        if (fAddressSpace.isValidAddressID(classID)) {
            jClass.setID(classID);
        }
        return jClass;
    } else {
        throw new JCInvalidArgumentsException("Failed to add class.  Null class name");
    }
}

Example 3 with JCJavaClass

use of com.ibm.dtfj.java.javacore.JCJavaClass in project openj9 by eclipse.

the class JavaRuntimeBuilder method addJavaStackFrame.

/**
 */
public JavaStackFrame addJavaStackFrame(JavaThread javaThread, String className, String classFileName, String methodName, String methodType, String compilationLevel, int lineNumber) throws BuilderFailureException {
    try {
        JCJavaThread jThread = (JCJavaThread) javaThread;
        JCJavaClass jclass = getJavaRuntime().findJavaClass(className);
        if (jclass == null) {
            jclass = new JCJavaClass(getJavaRuntime(), className);
        }
        JCJavaMethod method = new JCJavaMethod(methodName, jclass);
        JCJavaLocation location = new JCJavaLocation(method);
        location.setFilename(classFileName);
        location.setCompilation(compilationLevel);
        location.setLineNumber(lineNumber);
        JCJavaStackFrame stackFrame = new JCJavaStackFrame(jThread, location);
        if ("run".equals(methodName)) {
            /*
				 * Perhaps the type of the thread is the type of the last run() method.
				 * Not strictly accurate if the class was extended without overriding run(). 
				 * Add the object only if the object ID is valid.
				 */
            try {
                JavaObject jo = jThread.getObject();
                if (jo != null) {
                    ImagePointer tid = jo.getID();
                    if (fAddressSpace.isValidAddressID(tid.getAddress())) {
                        JCJavaObject jobject = new JCJavaObject(tid, jclass);
                        jThread.setObject(jobject);
                    }
                }
            } catch (CorruptDataException e) {
            // Ignore
            }
        }
        return stackFrame;
    } catch (JCInvalidArgumentsException e) {
        throw new BuilderFailureException(e);
    }
}

Example 4 with JCJavaClass

use of com.ibm.dtfj.java.javacore.JCJavaClass in project openj9 by eclipse.

the class JavaRuntimeBuilder method addClassLoader.

/**
 * Must pass a valid class loader ID in order to generate a class loader object. Else exception
 * is thrown.
 *
 * @param classLoaderName optional
 * @param clID required, or else exception is throw and class loader is not created.
 * @param objectID optional (although generally this is the same as the clID for most javacores)
 * @return successfully created JavaClassLoader
 * @throws BuilderFailureException if class loader ID is invalid.
 */
public JavaClassLoader addClassLoader(String classLoaderName, long clID, long objectID) throws BuilderFailureException {
    try {
        JCJavaClassLoader classLoader = getJavaRuntime().findJavaClassLoader(clID);
        if (classLoader == null) {
            classLoader = new JCJavaClassLoader(getJavaRuntime(), clID);
        }
        JCJavaObject javaObject = classLoader.getInternalObject();
        if (javaObject == null) {
            JCJavaClass javaClass = getJavaRuntime().findJavaClass(classLoaderName);
            if (javaClass == null) {
                javaClass = new JCJavaClass(getJavaRuntime(), classLoaderName);
            }
            ImagePointer objectPointer = fAddressSpace.getPointer(objectID);
            javaObject = new JCJavaObject(objectPointer, javaClass);
            classLoader.setObject(javaObject);
        }
        return classLoader;
    } catch (JCInvalidArgumentsException e) {
        throw new BuilderFailureException(e);
    }
}

Example 5 with JCJavaClass

use of com.ibm.dtfj.java.javacore.JCJavaClass in project openj9 by eclipse.

the class JavaRuntimeBuilder method addClass.

/**
 * Note that even if a class was already registered with a class loader previously, it may contain incomplete data,
 * so this case has to be considered.
 */
public JavaClass addClass(JavaClassLoader jClassLoader, String name, long classID, long superClassID, String fileName) throws BuilderFailureException {
    try {
        JCJavaClassLoader classLoader = (JCJavaClassLoader) jClassLoader;
        JCJavaClass jClass = generateJavaClass(getJavaRuntime(), name, classID);
        jClass.setJavaSuperClass(superClassID);
        jClass.setClassLoader(classLoader);
        ImagePointer ip = jClass.getID();
        if (ip != null) {
            classLoader.addClass(name, ip);
        } else {
            if (classLoader.internalGetClass(name) == null) {
                classLoader.addClass(name);
            }
        }
        return jClass;
    } catch (JCInvalidArgumentsException e) {
        throw new BuilderFailureException(e);
    }
}