/** Get an instance of an object capable of reflectively invoking this method */
@RuntimePure
@SuppressWarnings("unchecked")
public synchronized ReflectionBase getInvoker() {
if (!VM.runningVM) {
return null;
}
ReflectionBase invoker;
if (invokeMethods != null) {
synchronized (RVMMethod.class) {
invoker = invokeMethods.get(this);
}
} else {
invoker = null;
}
if (invoker == null) {
Class<ReflectionBase> reflectionClass =
(Class<ReflectionBase>) RVMClass.createReflectionClass(this);
if (reflectionClass != null) {
try {
invoker = reflectionClass.newInstance();
} catch (Throwable e) {
throw new Error(e);
}
} else {
invoker = ReflectionBase.nullInvoker;
}
if (invokeMethods != null) {
synchronized (RVMMethod.class) {
invokeMethods.put(this, invoker);
}
}
}
return invoker;
}
/** Returns the parameter annotations for this method. */
@Pure
public final Annotation[][] getDeclaredParameterAnnotations() {
Annotation[][] result;
synchronized (declaredParameterAnnotations) {
result = declaredParameterAnnotations.get(this);
}
if (result == null) {
RVMAnnotation[][] parameterAnnotations = getParameterAnnotations();
result = new Annotation[parameterAnnotations.length][];
for (int a = 0; a < result.length; ++a) {
result[a] = toAnnotations(parameterAnnotations[a]);
}
synchronized (declaredParameterAnnotations) {
declaredParameterAnnotations.put(this, result);
}
}
return result;
}
/**
* This is the findOrCreate() method through which all Atoms are ultimately created. The
* constructor for Atom is a private method, so someone has to call one of the public
* findOrCreate() methods to get a new one. And they all feed through here.
*/
private static Atom findOrCreate(byte[] bytes, boolean create, String str) {
Atom val = new Atom(bytes, -1, str);
val = dictionary.get(val);
if (val != null || !create) return val;
synchronized (Atom.class) {
val = new Atom(bytes, nextId++, str);
int column = val.id >> LOG_ROW_SIZE;
if (column == atoms.length) {
Atom[][] tmp = new Atom[column + 1][];
for (int i = 0; i < column; i++) {
tmp[i] = atoms[i];
}
atoms = tmp;
atoms[column] = new Atom[1 << LOG_ROW_SIZE];
}
atoms[column][val.id & ROW_MASK] = val;
dictionary.put(val, val);
}
return val;
}
/** Get the offset used to hold a JTOC addressable version of the current entry code array */
@Pure
private Offset getJtocOffset() {
Integer offAsInt;
synchronized (jtocOffsets) {
offAsInt = jtocOffsets.get(this);
}
if (offAsInt == null) {
return Offset.zero();
} else {
return Offset.fromIntSignExtend(offAsInt.intValue());
}
}
/** Find or create a JTOC offset for this method */
public final synchronized Offset findOrCreateJtocOffset() {
if (VM.VerifyAssertions) VM._assert(!isStatic() && !isObjectInitializer());
Offset jtocOffset = getJtocOffset();
;
if (jtocOffset.EQ(Offset.zero())) {
jtocOffset = Statics.allocateReferenceSlot(true);
Statics.setSlotContents(jtocOffset, getCurrentEntryCodeArray());
synchronized (jtocOffsets) {
jtocOffsets.put(this, Integer.valueOf(jtocOffset.toInt()));
}
}
return jtocOffset;
}
/**
* Find an atom from the subsequence of another
*
* @param utf8 byte backing of atom
* @param off offset of new atom
* @param len length of new atom
* @param str possible string encoding of atom or null
* @return atom
*/
private static Atom findOrCreate(byte[] utf8, int off, int len, String str) {
if (str != null) {
// string substring is cheap, so try to find using this if possible
Atom val = new Atom(null, -1, str.substring(off, off + len));
val = dictionary.get(val);
if (val != null) return val;
}
byte[] val = new byte[len];
for (int i = 0; i < len; ++i) {
val[i] = utf8[off++];
}
return findOrCreate(val, true, null);
}
/**
* Read an annotation attribute from the class file
*
* @param constantPool from constant pool being loaded
* @param input the data being read
*/
static RVMAnnotation readAnnotation(
int[] constantPool, DataInputStream input, ClassLoader classLoader)
throws IOException, ClassNotFoundException {
TypeReference type;
// Read type
int typeIndex = input.readUnsignedShort();
type = TypeReference.findOrCreate(classLoader, RVMClass.getUtf(constantPool, typeIndex));
// Read values
int numAnnotationMembers = input.readUnsignedShort();
AnnotationMember[] elementValuePairs = new AnnotationMember[numAnnotationMembers];
for (int i = 0; i < numAnnotationMembers; i++) {
elementValuePairs[i] =
AnnotationMember.readAnnotationMember(type, constantPool, input, classLoader);
}
// Arrays.sort(elementValuePairs);
RVMAnnotation result = new RVMAnnotation(type, elementValuePairs);
RVMAnnotation unique = uniqueMap.get(result);
if (unique != null) {
return unique;
} else {
uniqueMap.put(result, result);
return result;
}
}
/**
* Exceptions thrown by this method - something like { "java/lang/IOException",
* "java/lang/EOFException" }
*
* @return info (null --> method doesn't throw any exceptions)
*/
@Pure
public final TypeReference[] getExceptionTypes() {
synchronized (exceptionTypes) {
return exceptionTypes.get(this);
}
}
/** Get the parameter annotations for this method */
@Pure
private RVMAnnotation[][] getParameterAnnotations() {
synchronized (parameterAnnotations) {
return parameterAnnotations.get(this);
}
}