/* * Copyright (C) 2015 Square, 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.squareup.leakcanary; import android.os.Debug; import android.util.Log; import java.io.File; import java.io.IOException; import static com.squareup.leakcanary.internal.LeakCanaryInternals.isExternalStorageWritable; import static com.squareup.leakcanary.internal.LeakCanaryInternals.storageDirectory; public final class AndroidHeapDumper implements HeapDumper { private static final String TAG = "AndroidHeapDumper"; @Override public File dumpHeap() { if (!isExternalStorageWritable()) { Log.d(TAG, "Could not dump heap, external storage not mounted."); } File heapDumpFile = getHeapDumpFile(); if (heapDumpFile.exists()) { Log.d(TAG, "Could not dump heap, previous analysis still is in progress."); // Heap analysis in progress, let's not put too much pressure on the device. return null; } try { Debug.dumpHprofData(heapDumpFile.getAbsolutePath()); return heapDumpFile; } catch (IOException e) { cleanup(); Log.e(TAG, "Could not perform heap dump", e); // Abort heap dump return null; } } private File getHeapDumpFile() { return new File(storageDirectory(), "suspected_leak_heapdump.hprof"); } /** * Call this on app startup to clean up all heap dump files that had not been handled yet when * the app process was killed. */ public void cleanup() { if (isExternalStorageWritable()) { Log.d(TAG, "Could not attempt cleanup, external storage not mounted."); } File heapDumpFile = getHeapDumpFile(); if (heapDumpFile.exists()) { Log.d(TAG, "Previous analysis did not complete correctly, cleaning: " + heapDumpFile); heapDumpFile.delete(); } } }