/**
* Mutator-specific handling of uncaught exceptions.
*
* @param t
* @param e
*/
public void uncaughtException(Thread t, Throwable e) {
if (e.getClass() == expectedThrowable) {
System.err.println(
"Mutator "
+ context.getId()
+ " exiting due to expected exception of class "
+ expectedThrowable);
expectedThrowable = null;
end();
} else {
System.err.print("Mutator " + context.getId() + " caused unexpected exception: ");
e.printStackTrace();
System.exit(1);
}
}
/**
* Store a value into a reference field of an object.
*
* @param object The object to store the field of.
* @param index The field index.
* @param value The value to store.
*/
public void storeReferenceField(ObjectReference object, int index, ObjectReference value) {
int limit = ObjectModel.getRefs(object);
if (Trace.isEnabled(Item.STORE) || ObjectModel.isWatched(object)) {
Trace.printf(
Item.STORE,
"[%s].object[%d/%d] = %s",
ObjectModel.getString(object),
index,
limit,
value.toString());
}
check(!object.isNull(), "Object can not be null");
check(index >= 0, "Index must be non-negative");
check(index < limit, "Index " + index + " out of bounds " + limit);
Address referenceSlot = ObjectModel.getRefSlot(object, index);
if (ActivePlan.constraints.needsWriteBarrier()) {
context.writeBarrier(object, referenceSlot, value, null, null, Plan.AASTORE_WRITE_BARRIER);
if (gcEveryWB) {
gc();
}
} else {
referenceSlot.store(value);
}
}
/**
* Load and return the value of a reference field of an object.
*
* @param object The object to load the field of.
* @param index The field index.
*/
public ObjectReference loadReferenceField(ObjectReference object, int index) {
int limit = ObjectModel.getRefs(object);
check(!object.isNull(), "Object can not be null");
check(index >= 0, "Index must be non-negative");
check(index < limit, "Index " + index + " out of bounds " + limit);
Address referenceSlot = ObjectModel.getRefSlot(object, index);
ObjectReference result;
if (ActivePlan.constraints.needsReadBarrier()) {
result = context.readBarrier(object, referenceSlot, null, null, Plan.AASTORE_WRITE_BARRIER);
} else {
result = referenceSlot.loadObjectReference();
}
Trace.trace(
Item.LOAD,
"[%s].object[%d] returned [%s]",
ObjectModel.getString(object),
index,
result.toString());
return result;
}
/** Register a mutator, returning the allocated id. */
public static synchronized void register(MutatorContext context) {
int id = mutators.size();
mutators.add(null);
context.initMutator(id);
}
public void begin() {
mutators.set(context.getId(), this);
}