ejb3/src/main/java/org/jboss/as/ejb3/component/singleton/EJBReadWriteLock.java
private void incReadLockCount() {
        Integer current = readLockCount.get();
        int next;
        if (current == null)
            next = 1;
        else
            next = current.intValue() + 1;
        readLockCount.set(new Integer(next));
    }
private void incReadLockCount() {
        Integer current = readLockCount.get();
        int next;
        if (current == null)
            next = 1;
        else
            next = current.intValue() + 1;
        readLockCount.set(new Integer(next));
    }
Increments the read lock count held by the thread