The Tor Browser / file comparison
comparison: mobile/android/base/util/NonEvictingLruCache.java
mobile/android/base/util/NonEvictingLruCache.java
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:28261e2236ca |
|---|---|
| 1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 package org.mozilla.gecko.util; | |
| 7 | |
| 8 import android.support.v4.util.LruCache; | |
| 9 | |
| 10 import java.util.concurrent.ConcurrentHashMap; | |
| 11 | |
| 12 /** | |
| 13 * An LruCache that also supports a set of items that will never be evicted. | |
| 14 * | |
| 15 * Alas, LruCache is final, so we compose rather than inherit. | |
| 16 */ | |
| 17 public class NonEvictingLruCache<K, V> { | |
| 18 private final ConcurrentHashMap<K, V> permanent = new ConcurrentHashMap<K, V>(); | |
| 19 private final LruCache<K, V> evictable; | |
| 20 | |
| 21 public NonEvictingLruCache(final int evictableSize) { | |
| 22 evictable = new LruCache<K, V>(evictableSize); | |
| 23 } | |
| 24 | |
| 25 public V get(K key) { | |
| 26 V val = permanent.get(key); | |
| 27 if (val == null) { | |
| 28 return evictable.get(key); | |
| 29 } | |
| 30 return val; | |
| 31 } | |
| 32 | |
| 33 public void putWithoutEviction(K key, V value) { | |
| 34 permanent.put(key, value); | |
| 35 } | |
| 36 | |
| 37 public void put(K key, V value) { | |
| 38 evictable.put(key, value); | |
| 39 } | |
| 40 | |
| 41 public void evictAll() { | |
| 42 evictable.evictAll(); | |
| 43 } | |
| 44 } |
