AtomicReferenceFieldUpdaterImpl(
Class<T> tclass, Class<V> vclass, String fieldName, Class<?> caller) {
Field field = null;
Class fieldClass = null;
int modifiers = 0;
try {
field = tclass.getDeclaredField(fieldName);
modifiers = field.getModifiers();
sun.reflect.misc.ReflectUtil.ensureMemberAccess(caller, tclass, null, modifiers);
sun.reflect.misc.ReflectUtil.checkPackageAccess(tclass);
fieldClass = field.getType();
} catch (Exception ex) {
throw new RuntimeException(ex);
}
if (vclass != fieldClass) throw new ClassCastException();
if (vclass.isPrimitive()) throw new IllegalArgumentException("Must be reference type");
if (!Modifier.isVolatile(modifiers))
throw new IllegalArgumentException("Must be volatile type");
this.cclass = (Modifier.isProtected(modifiers) && caller != tclass) ? caller : null;
this.tclass = tclass;
if (vclass == Object.class) this.vclass = null;
else this.vclass = vclass;
offset = unsafe.objectFieldOffset(field);
}
LockedUpdater(Class<T> tclass, String fieldName, Class<?> caller) {
Field field = null;
int modifiers = 0;
try {
field = tclass.getDeclaredField(fieldName);
modifiers = field.getModifiers();
sun.reflect.misc.ReflectUtil.ensureMemberAccess(caller, tclass, null, modifiers);
sun.reflect.misc.ReflectUtil.checkPackageAccess(tclass);
} catch (Exception ex) {
throw new RuntimeException(ex);
}
Class fieldt = field.getType();
if (fieldt != long.class) throw new IllegalArgumentException("Must be long type");
if (!Modifier.isVolatile(modifiers))
throw new IllegalArgumentException("Must be volatile type");
this.cclass = (Modifier.isProtected(modifiers) && caller != tclass) ? caller : null;
this.tclass = tclass;
offset = unsafe.objectFieldOffset(field);
}
