AtnManager.java 文件源码

public ATN checkAndClear() {
    if (0 != counter.incrementAndGet() % DFA_CACHE_THRESHOLD) {
        return atn;
    }

    RRWL.writeLock().lock();
    try {
        atn.clearDFA();
    } finally {
        RRWL.writeLock().unlock();
    }

    return atn;
}