public final List lockAll()

in hugegraph-common/src/main/java/org/apache/hugegraph/concurrent/KeyLock.java [80:101]

• 22 lines of code
• 6 McCabe index (conditional complexity)

    public final List<Lock> lockAll(Object... keys) {
        E.checkArgument(keys != null && keys.length > 0,
                        "Lock keys can't be null or empty");
        List<Lock> locks = new ArrayList<>(keys.length);
        for (Object key : keys) {
            E.checkArgument(key != null, "Lock key can't be null");
            Lock lock = this.locks.get(key);
            locks.add(lock);
        }
        locks.sort((a, b) -> {
            int diff = a.hashCode() - b.hashCode();
            if (diff == 0 && a != b) {
                diff = this.indexOf(a) - this.indexOf(b);
                assert diff != 0;
            }
            return diff;
        });
        for (Lock lock : locks) {
            lock.lock();
        }
        return Collections.unmodifiableList(locks);
    }