Method clear

output/java_guava/1.4.17/LocalCache.java:3284–3316

()

    }

    void clear() {
      if (count != 0) { // read-volatile
        lock();
        try {
          long now = map.ticker.read();
          preWriteCleanup(now);
          AtomicReferenceArray<ReferenceEntry<K, V>> table = this.table;
          for (int i = 0; i < table.length(); ++i) {
            for (ReferenceEntry<K, V> e = table.get(i); e != null; e = e.getNext()) {
              // Loading references aren't actually in the map yet.
              if (e.getValueReference().isActive()) {
                K key = e.getKey();
                V value = e.getValueReference().get();
                RemovalCause cause = (key == null || value == null) ? RemovalCause.COLLECTED : RemovalCause.EXPLICIT;
                enqueueNotification(key, e.getHash(), value, e.getValueReference().getWeight(), cause);
              }
            }
          }
          for (int i = 0; i < table.length(); ++i) {
            table.set(i, null);
          }
          clearReferenceQueues();
          writeQueue.clear();
          accessQueue.clear();
          readCount.set(0);
          ++modCount;
          count = 0; // write-volatile
        } finally {
          unlock();
          postWriteCleanup();
        }
      }
    }

    @GuardedBy("this")
    @Nullable