| /* |
| * Copyright (C) 2018 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 android.util.imagepool; |
| |
| import java.lang.management.GarbageCollectorMXBean; |
| import java.lang.management.ManagementFactory; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import com.google.common.collect.HashMultiset; |
| import com.google.common.collect.Multiset; |
| |
| /** |
| * Useful impl for debugging reproable error. |
| */ |
| public class ImagePoolStatsDebugImpl extends ImagePoolStatsProdImpl { |
| |
| private static String PACKAGE_NAME = ImagePoolStats.class.getPackage().getName(); |
| |
| // Used for deugging purposes only. |
| private final Map<Integer, String> mCallStack = new HashMap<>(); |
| private long mRequestedTotalBytes = 0; |
| private long mAllocatedOutsidePoolBytes = 0; |
| |
| // Used for gc-related stats. |
| private long mPreviousGcCollection = 0; |
| private long mPreviousGcTime = 0; |
| |
| /** Used for policy */ |
| @Override |
| public void recordBucketCreation(int widthBucket, int heightBucket) { |
| super.recordBucketCreation(widthBucket, heightBucket); |
| } |
| |
| @Override |
| public boolean fitsMaxCacheSize(int width, int height, long maxCacheSize) { |
| return super.fitsMaxCacheSize(width, height, maxCacheSize); |
| } |
| |
| @Override |
| public void clear() { |
| super.clear(); |
| |
| mRequestedTotalBytes = 0; |
| mAllocatedOutsidePoolBytes = 0; |
| mTooBigForPoolCount = 0; |
| mCallStack.clear(); |
| } |
| |
| @Override |
| public void tooBigForCache() { |
| super.tooBigForCache(); |
| } |
| |
| /** Used for Debugging only */ |
| @Override |
| public void recordBucketRequest(int w, int h) { |
| mRequestedTotalBytes += (w * h * ESTIMATED_PIXEL_BYTES); |
| } |
| |
| @Override |
| public void recordAllocOutsidePool(int width, int height) { |
| mAllocatedOutsidePoolBytes += (width * height * ESTIMATED_PIXEL_BYTES); |
| } |
| |
| @Override |
| public void acquiredImage(Integer imageHash) { |
| for (int i = 1; i < Thread.currentThread().getStackTrace().length; i++) { |
| StackTraceElement element = Thread.currentThread().getStackTrace()[i]; |
| String str = element.toString(); |
| |
| if (!str.contains(PACKAGE_NAME)) { |
| mCallStack.put(imageHash, str); |
| break; |
| } |
| } |
| } |
| |
| @Override |
| public void disposeImage(Integer imageHash) { |
| mCallStack.remove(imageHash); |
| } |
| |
| @Override |
| public void start() { |
| long totalGarbageCollections = 0; |
| long garbageCollectionTime = 0; |
| for (GarbageCollectorMXBean gc : ManagementFactory.getGarbageCollectorMXBeans()) { |
| long count = gc.getCollectionCount(); |
| if (count >= 0) { |
| totalGarbageCollections += count; |
| } |
| long time = gc.getCollectionTime(); |
| if (time >= 0) { |
| garbageCollectionTime += time; |
| } |
| } |
| mPreviousGcCollection = totalGarbageCollections; |
| mPreviousGcTime = garbageCollectionTime; |
| } |
| |
| private String calculateGcStatAndReturn() { |
| long totalGarbageCollections = 0; |
| long garbageCollectionTime = 0; |
| for (GarbageCollectorMXBean gc : ManagementFactory.getGarbageCollectorMXBeans()) { |
| long count = gc.getCollectionCount(); |
| if (count > 0) { |
| totalGarbageCollections += count; |
| } |
| long time = gc.getCollectionTime(); |
| if(time > 0) { |
| garbageCollectionTime += time; |
| } |
| } |
| totalGarbageCollections -= mPreviousGcCollection; |
| garbageCollectionTime -= mPreviousGcTime; |
| |
| StringBuilder builder = new StringBuilder(); |
| builder.append("Total Garbage Collections: "); |
| builder.append(totalGarbageCollections); |
| builder.append("\n"); |
| |
| builder.append("Total Garbage Collection Time (ms): "); |
| builder.append(garbageCollectionTime); |
| builder.append("\n"); |
| |
| return builder.toString(); |
| } |
| |
| @Override |
| public String getStatistic() { |
| StringBuilder builder = new StringBuilder(); |
| |
| builder.append(calculateGcStatAndReturn()); |
| builder.append("Memory\n"); |
| builder.append(" requested total : "); |
| builder.append(mRequestedTotalBytes / 1_000_000); |
| builder.append(" MB\n"); |
| builder.append(" allocated (in pool) : "); |
| builder.append(mAllocateTotalBytes / 1_000_000); |
| builder.append(" MB\n"); |
| builder.append(" allocated (out of pool) : "); |
| builder.append(mAllocatedOutsidePoolBytes / 1_000_000); |
| builder.append(" MB\n"); |
| |
| double percent = (1.0 - (double) mRequestedTotalBytes / (mAllocateTotalBytes + |
| mAllocatedOutsidePoolBytes)); |
| if (percent < 0.0) { |
| builder.append(" saved : "); |
| builder.append(-1.0 * percent); |
| builder.append("%\n"); |
| } else { |
| builder.append(" wasting : "); |
| builder.append(percent); |
| builder.append("%\n"); |
| } |
| |
| builder.append("Undispose images\n"); |
| Multiset<String> countSet = HashMultiset.create(); |
| for (String callsite : mCallStack.values()) { |
| countSet.add(callsite); |
| } |
| |
| for (Multiset.Entry<String> entry : countSet.entrySet()) { |
| builder.append(" - "); |
| builder.append(entry.getElement()); |
| builder.append(" - missed dispose : "); |
| builder.append(entry.getCount()); |
| builder.append(" times\n"); |
| } |
| |
| builder.append("Number of times requested image didn't fit the pool : "); |
| builder.append(mTooBigForPoolCount); |
| builder.append("\n"); |
| |
| return builder.toString(); |
| } |
| } |