| /* |
| * Copyright 2013-present Facebook, Inc. |
| * |
| * 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.facebook.buck.dalvik; |
| |
| import com.facebook.buck.java.classes.FileLike; |
| import com.google.common.collect.MapMaker; |
| |
| import java.io.IOException; |
| import java.util.concurrent.ConcurrentMap; |
| |
| /** |
| * Cache to memoize results from DalvikStatsTool. |
| */ |
| class DalvikStatsCache { |
| |
| private final ConcurrentMap<FileLike, DalvikStatsTool.Stats> cache; |
| |
| DalvikStatsCache() { |
| cache = new MapMaker().weakKeys().makeMap(); |
| } |
| |
| DalvikStatsTool.Stats getStats(FileLike entry) { |
| String name = entry.getRelativePath(); |
| if (!name.endsWith(".class")) { |
| // Probably something like a pom.properties file in a JAR: this does not contribute |
| // to the linear alloc size, so return zero. |
| return DalvikStatsTool.Stats.ZERO; |
| } |
| |
| DalvikStatsTool.Stats stats = cache.get(entry); |
| if (stats != null) { |
| return stats; |
| } |
| |
| try { |
| stats = DalvikStatsTool.getEstimate(entry.getInput()); |
| cache.put(entry, stats); |
| return stats; |
| } catch (IOException e) { |
| throw new RuntimeException(String.format("Error calculating size for %s.", name), e); |
| } catch (RuntimeException e) { |
| throw new RuntimeException(String.format("Error calculating size for %s.", name), e); |
| } |
| } |
| } |