The Tor Browser: mobile/android/thirdparty/com/squareup/picasso/LruCache.java@6474c204b198 (annotated)

mobile/android/thirdparty/com/squareup/picasso/LruCache.java@6474c204b198 (annotated)

mobile/android/thirdparty/com/squareup/picasso/LruCache.java

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  * Copyright (C) 2011 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 package com.squareup.picasso;
 import android.content.Context;
 import android.graphics.Bitmap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 /** A memory cache which uses a least-recently used eviction policy. */
 public class LruCache implements Cache {
   final LinkedHashMap<String, Bitmap> map;
   private final int maxSize;
   private int size;
   private int putCount;
   private int evictionCount;
   private int hitCount;
   private int missCount;
   /** Create a cache using an appropriate portion of the available RAM as the maximum size. */
   public LruCache(Context context) {
     this(Utils.calculateMemoryCacheSize(context));
   }
   /** Create a cache with a given maximum size in bytes. */
   public LruCache(int maxSize) {
     if (maxSize <= 0) {
       throw new IllegalArgumentException("Max size must be positive.");
     }
     this.maxSize = maxSize;
     this.map = new LinkedHashMap<String, Bitmap>(0, 0.75f, true);
   }
   @Override public Bitmap get(String key) {
     if (key == null) {
       throw new NullPointerException("key == null");
     }
     Bitmap mapValue;
     synchronized (this) {
       mapValue = map.get(key);
       if (mapValue != null) {
         hitCount++;
         return mapValue;
       }
       missCount++;
     }
     return null;
   }
   @Override public void set(String key, Bitmap bitmap) {
     if (key == null || bitmap == null) {
       throw new NullPointerException("key == null || bitmap == null");
     }
     Bitmap previous;
     synchronized (this) {
       putCount++;
       size += Utils.getBitmapBytes(bitmap);
       previous = map.put(key, bitmap);
       if (previous != null) {
         size -= Utils.getBitmapBytes(previous);
       }
     }
     trimToSize(maxSize);
   }
   private void trimToSize(int maxSize) {
     while (true) {
       String key;
       Bitmap value;
       synchronized (this) {
         if (size < 0 || (map.isEmpty() && size != 0)) {
           throw new IllegalStateException(
               getClass().getName() + ".sizeOf() is reporting inconsistent results!");
         }
         if (size <= maxSize || map.isEmpty()) {
           break;
         }
         Map.Entry<String, Bitmap> toEvict = map.entrySet().iterator().next();
         key = toEvict.getKey();
         value = toEvict.getValue();
         map.remove(key);
         size -= Utils.getBitmapBytes(value);
         evictionCount++;
       }
     }
   }
   /** Clear the cache. */
   public final void evictAll() {
     trimToSize(-1); // -1 will evict 0-sized elements
   }
   /** Returns the sum of the sizes of the entries in this cache. */
   public final synchronized int size() {
     return size;
   }
   /** Returns the maximum sum of the sizes of the entries in this cache. */
   public final synchronized int maxSize() {
     return maxSize;
   }
   public final synchronized void clear() {
     evictAll();
   }
   /** Returns the number of times {@link #get} returned a value. */
   public final synchronized int hitCount() {
     return hitCount;
   }
   /** Returns the number of times {@link #get} returned {@code null}. */
   public final synchronized int missCount() {
     return missCount;
   }
   /** Returns the number of times {@link #set(String, Bitmap)} was called. */
   public final synchronized int putCount() {
     return putCount;
   }
   /** Returns the number of values that have been evicted. */
   public final synchronized int evictionCount() {
     return evictionCount;
   }
 }

The Tor Browser / annotate

mobile/android/thirdparty/com/squareup/picasso/LruCache.java@6474c204b198 (annotated)

mobile/android/thirdparty/com/squareup/picasso/LruCache.java