@SuppressWarnings({"unchecked"})
protected F create(E key) {
long start = System.nanoTime();
F t = calculatable.calculate(owner, key);
long end = System.nanoTime();
miss(end - start);
save(key, t);
return t;
}
@Override
@SuppressWarnings({"unchecked"})
public F getOrCreate(E o) {
if (DependencyTracker.isBypassCaches()) {
return calculatable.calculate(owner, o);
} else {
lock(o);
try {
Object v = load(o);
if (v != UNDEFINED) {
DependencyTracker.mark(getDependencyNode());
hit();
return (F) v;
}
DependencyNode callerNode = DependencyTracker.track(getDependencyNode());
try {
while (true) {
try {
return create(o);
} catch (ResourceOccupied e) {
if (callerNode != null) {
throw e;
} else {
unlock(o);
try {
e.getResource().waitForEndOfModification();
} finally {
lock(o);
}
v = load(o);
if (v != UNDEFINED) {
hit();
return (F) v;
}
}
}
}
} finally {
DependencyTracker.exit(callerNode);
}
} finally {
unlock(o);
}
}
}