| /* |
| * Copyright 2016, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.jf.dexlib2.writer.pool; |
| |
| import com.google.common.collect.Maps; |
| |
| import javax.annotation.Nonnull; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| public class BasePool<Key, Value> implements Markable { |
| @Nonnull protected final DexPool dexPool; |
| @Nonnull protected final Map<Key, Value> internedItems = Maps.newLinkedHashMap(); |
| private int markedItemCount = -1; |
| |
| public BasePool(@Nonnull DexPool dexPool) { |
| this.dexPool = dexPool; |
| } |
| |
| public void mark() { |
| markedItemCount = internedItems.size(); |
| } |
| |
| public void reset() { |
| if (markedItemCount < 0) { |
| throw new IllegalStateException("mark() must be called before calling reset()"); |
| } |
| |
| if (markedItemCount == internedItems.size()) { |
| return; |
| } |
| |
| Iterator<Key> keys = internedItems.keySet().iterator(); |
| for (int i=0; i<markedItemCount; i++) { |
| keys.next(); |
| } |
| while (keys.hasNext()) { |
| keys.next(); |
| keys.remove(); |
| } |
| } |
| |
| public int getItemCount() { |
| return internedItems.size(); |
| } |
| } |