StrictMode.java revision 32e60c7942eeba920ec5c27b372ec0899fd75a20
1438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick/* 2438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * Copyright (C) 2010 The Android Open Source Project 3438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * 4438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * Licensed under the Apache License, Version 2.0 (the "License"); 5438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * you may not use this file except in compliance with the License. 6438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * You may obtain a copy of the License at 7438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * 8438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * http://www.apache.org/licenses/LICENSE-2.0 9438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * 10438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * Unless required by applicable law or agreed to in writing, software 11438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * distributed under the License is distributed on an "AS IS" BASIS, 12438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * See the License for the specific language governing permissions and 14438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * limitations under the License. 15438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 16438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrickpackage android.os; 17438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 18438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrickimport android.app.ActivityManagerNative; 19438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrickimport android.app.ApplicationErrorReport; 20438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrickimport android.util.Log; 21cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrickimport android.util.Printer; 22438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 23438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrickimport com.android.internal.os.RuntimeInit; 24438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 25438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrickimport dalvik.system.BlockGuard; 26438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 275b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrickimport java.io.PrintWriter; 285b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrickimport java.io.StringWriter; 295b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrickimport java.util.ArrayList; 3046d42387464a651268648659e91d022566d4844cBrad Fitzpatrickimport java.util.HashMap; 3146d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 32438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick/** 3332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>StrictMode is a developer tool which detects things you might be 3432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * doing by accident and brings them to your attention so you can fix 3532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * them. 3615ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * 3715ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * <p>StrictMode is most commonly used to catch accidental disk or 3815ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * network access on the application's main thread, where UI 3915ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * operations are received and animations take place. Keeping disk 4015ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * and network operations off the main thread makes for much smoother, 4115ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * more responsive applications. 4215ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * 4315ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * <p class="note">Note that even though an Android device's disk is 4415ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * often on flash memory, many devices run a filesystem on top of that 4515ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * memory with very limited concurrency. It's often the case that 4615ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * almost all disk accesses are fast, but may in individual cases be 4715ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * dramatically slower when certain I/O is happening in the background 4815ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * from other processes. If possible, it's best to assume that such 4915ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * things are not fast.</p> 5015ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * 5115ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * <p>Example code to enable from early in your 5215ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * {@link android.app.Application}, {@link android.app.Activity}, or 5315ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * other application component's 5415ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * {@link android.app.Application#onCreate} method: 5515ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * 5615ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * <pre> 5715ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * public void onCreate() { 5815ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * if (DEVELOPER_MODE) { 5932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode.setThreadPolicy(new {@link ThreadPolicy.Builder StrictMode.ThreadPolicy.Builder}() 6032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .detectDiskReads() 6132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .detectDiskWrites() 6232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .detectNetwork() // or .detectAll() for all detectable problems 6332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .penaltyLog() 6432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .build()); 6532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode.setVmPolicy(new {@link VmPolicy.Builder StrictMode.VmPolicy.Builder}() 6632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .detectLeakedSqlLiteCursors() 6732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .penaltyLog() 6832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .penaltyDeath() 6932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .build()); 7015ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * } 7115ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * super.onCreate(); 7215ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * } 7315ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * </pre> 7415ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * 7532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>You can decide what should happen when a violation is detected. 7632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * For example, using {@link ThreadPolicy.Builder#penaltyLog} you can 7732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * watch the output of <code>adb logcat</code> while you use your 7832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * application to see the violations as they happen. 7915ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * 8015ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * <p>If you find violations that you feel are problematic, there are 8115ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * a variety of tools to help solve them: threads, {@link android.os.Handler}, 8215ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * {@link android.os.AsyncTask}, {@link android.app.IntentService}, etc. 8315ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * But don't feel compelled to fix everything that StrictMode finds. In particular, 8432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * many cases of disk access are often necessary during the normal activity lifecycle. Use 8532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode to find things you did by accident. Network requests on the UI thread 8615ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * are almost always a problem, though. 8715ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * 8815ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * <p class="note">StrictMode is not a security mechanism and is not 8915ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * guaranteed to find all disk or network accesses. While it does 9015ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * propagate its state across process boundaries when doing 9115ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * {@link android.os.Binder} calls, it's still ultimately a best 9215ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * effort mechanism. Notably, disk or network access from JNI calls 9315ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * won't necessarily trigger it. Future versions of Android may catch 9415ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * more (or fewer) operations, so you should never leave StrictMode 9515ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * enabled in shipping applications on the Android Market. 96438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 97438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrickpublic final class StrictMode { 98438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick private static final String TAG = "StrictMode"; 995b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static final boolean LOG_V = false; 100438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 10146d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // Only log a duplicate stack trace to the logs every second. 10246d42387464a651268648659e91d022566d4844cBrad Fitzpatrick private static final long MIN_LOG_INTERVAL_MS = 1000; 10346d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 10446d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // Only show an annoying dialog at most every 30 seconds 10546d42387464a651268648659e91d022566d4844cBrad Fitzpatrick private static final long MIN_DIALOG_INTERVAL_MS = 30000; 10646d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 10732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // Thread-policy: 108438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 10915ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick /** 11032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 11115ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick */ 11232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final int DETECT_DISK_WRITE = 0x01; // for ThreadPolicy 11315ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick 11415ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick /** 11532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 11615ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick */ 11732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final int DETECT_DISK_READ = 0x02; // for ThreadPolicy 11815ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick 11915ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick /** 12032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 12115ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick */ 12232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final int DETECT_NETWORK = 0x04; // for ThreadPolicy 123438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 12432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // Process-policy: 125438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 126438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 12732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Note, a "VM_" bit, not thread. 12832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 12932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 13032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final int DETECT_VM_CURSOR_LEAKS = 0x200; // for ProcessPolicy 13132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 13232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 13332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 134438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 135438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public static final int PENALTY_LOG = 0x10; // normal android.util.Log 136438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 13732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // Used for both process and thread policy: 13832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 139438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 14032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 141438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 142438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public static final int PENALTY_DIALOG = 0x20; 143438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 144438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 14532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 146438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 147438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public static final int PENALTY_DEATH = 0x40; 148438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 149438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 15032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 151438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 152438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public static final int PENALTY_DROPBOX = 0x80; 153438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 154727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick /** 155727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * Non-public penalty mode which overrides all the other penalty 156727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * bits and signals that we're in a Binder call and we should 157727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * ignore the other penalty bits and instead serialize back all 158727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * our offending stack traces to the caller to ultimately handle 159727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * in the originating process. 160727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * 161703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick * This must be kept in sync with the constant in libs/binder/Parcel.cpp 162703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick * 163727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * @hide 164727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick */ 165727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick public static final int PENALTY_GATHER = 0x100; 166727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 16732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 16832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * The current VmPolicy in effect. 16932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 17032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private static volatile int sVmPolicyMask = 0; 17132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 17232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private StrictMode() {} 17332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 17432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 17532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * {@link StrictMode} policy applied to a certain thread. 17632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 17732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>The policy is enabled by {@link #setThreadPolicy}. The current policy 17832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * can be retrieved with {@link #getThreadPolicy}. 17932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 18032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>Note that multiple penalties may be provided and they're run 18132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * in order from least to most severe (logging before process 18232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * death, for example). There's currently no mechanism to choose 18332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * different penalties for different detected actions. 18432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 18532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final class ThreadPolicy { 18632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 18732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * The default, lax policy which doesn't catch anything. 18832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 18932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final ThreadPolicy LAX = new ThreadPolicy(0); 19032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 19132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick final int mask; 19232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 19332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private ThreadPolicy(int mask) { 19432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick this.mask = mask; 19532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 19632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 19732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick @Override 19832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public String toString() { 19932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return "[StrictMode.ThreadPolicy; mask=" + mask + "]"; 20032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 20132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 20232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 20332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Creates ThreadPolicy instances. Methods whose names start 20432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * with {@code detect} specify what problems we should look 20532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * for. Methods whose names start with {@code penalty} specify what 20632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * we should do when we detect a problem. 20732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 20832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>You can call as many {@code detect} and {@code penalty} 20932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * methods as you like. Currently order is insignificant: all 21032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * penalties apply to all detected problems. 21132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 21232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>For example, detect everything and log anything that's found: 21332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <pre> 21432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode.VmPolicy policy = new StrictMode.VmPolicy.Builder() 21532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .detectAll() 21632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .penaltyLog() 21732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .build(); 21832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode.setVmPolicy(policy); 21932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * </pre> 22032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 22132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final class Builder { 22232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private int mMask = 0; 22332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 22432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 22532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Create a Builder that detects nothing and has no 22632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * violations. (but note that {@link #build} will default 22732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * to enabling {@link #penaltyLog} if no other penalties 22832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * are specified) 22932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 23032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder() { 23132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick mMask = 0; 23232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 23332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 23432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 23532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Initialize a Builder from an existing ThreadPolicy. 23632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 23732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder(ThreadPolicy policy) { 23832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick mMask = policy.mask; 23932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 24032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 24132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 24232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Detect everything that's potentially suspect. 24332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 24432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>As of the Gingerbread release this includes network and 24532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * disk operations but will likely expand in future releases. 24632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 24732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectAll() { 24832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_DISK_WRITE | DETECT_DISK_READ | DETECT_NETWORK); 24932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 25032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 25132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 25232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Disable the detection of everything. 25332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 25432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder permitAll() { 25532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return disable(DETECT_DISK_WRITE | DETECT_DISK_READ | DETECT_NETWORK); 25632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 25732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 25832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 25932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Enable detection of network operations. 26032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 26132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectNetwork() { 26232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_NETWORK); 26332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 26432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 26532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 26632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Disable detection of network operations. 26732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 26832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder permitNetwork() { 26932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return disable(DETECT_NETWORK); 27032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 27132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 27232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 27332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Enable detection of disk reads. 27432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 27532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectDiskReads() { 27632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_DISK_READ); 27732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 27832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 27932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 28032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Disable detection of disk reads. 28132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 28232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder permitDiskReads() { 28332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return disable(DETECT_DISK_READ); 28432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 28532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 28632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 28732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Enable detection of disk writes. 28832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 28932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectDiskWrites() { 29032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_DISK_WRITE); 29132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 29232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 29332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 29432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Disable detection of disk writes. 29532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 29632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder permitDiskWrites() { 29732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return disable(DETECT_DISK_WRITE); 29832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 29932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 30032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 30132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Show an annoying dialog to the developer on detected 30232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * violations, rate-limited to be only a little annoying. 30332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 30432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyDialog() { 30532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_DIALOG); 30632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 30732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 30832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 30932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Crash the whole process on violation. This penalty runs at 31032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * the end of all enabled penalties so you'll still get 31132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * see logging or other violations before the process dies. 31232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 31332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyDeath() { 31432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_DEATH); 31532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 31632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 31732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 31832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Log detected violations to the system log. 31932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 32032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyLog() { 32132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_LOG); 32232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 32332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 32432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 32532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Enable detected violations log a stacktrace and timing data 32632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * to the {@link android.os.DropBoxManager DropBox} on policy 32732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * violation. Intended mostly for platform integrators doing 32832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * beta user field data collection. 32932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 33032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyDropBox() { 33132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_DROPBOX); 33232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 33332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 33432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private Builder enable(int bit) { 33532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick mMask |= bit; 33632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return this; 33732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 33832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 33932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private Builder disable(int bit) { 34032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick mMask &= ~bit; 34132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return this; 34232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 34332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 34432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 34532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Construct the ThreadPolicy instance. 34632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 34732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>Note: if no penalties are enabled before calling 34832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <code>build</code>, {@link #penaltyLog} is implicitly 34932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * set. 35032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 35132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public ThreadPolicy build() { 35232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // If there are detection bits set but no violation bits 35332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // set, enable simple logging. 35432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if (mMask != 0 && 35532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick (mMask & (PENALTY_DEATH | PENALTY_LOG | 35632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick PENALTY_DROPBOX | PENALTY_DIALOG)) == 0) { 35732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick penaltyLog(); 35832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 35932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new ThreadPolicy(mMask); 36032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 36132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 36232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 36332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 36432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 36532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * {@link StrictMode} policy applied to all threads in the virtual machine's process. 36632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 36732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>The policy is enabled by {@link #setVmPolicy}. 36832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 36932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final class VmPolicy { 37032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 37132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * The default, lax policy which doesn't catch anything. 37232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 37332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final VmPolicy LAX = new VmPolicy(0); 37432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 37532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick final int mask; 37632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 37732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private VmPolicy(int mask) { 37832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick this.mask = mask; 37932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 38032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 38132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick @Override 38232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public String toString() { 38332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return "[StrictMode.VmPolicy; mask=" + mask + "]"; 38432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 38532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 38632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 38732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Creates {@link VmPolicy} instances. Methods whose names start 38832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * with {@code detect} specify what problems we should look 38932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * for. Methods whose names start with {@code penalty} specify what 39032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * we should do when we detect a problem. 39132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 39232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>You can call as many {@code detect} and {@code penalty} 39332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * methods as you like. Currently order is insignificant: all 39432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * penalties apply to all detected problems. 39532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 39632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>For example, detect everything and log anything that's found: 39732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <pre> 39832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode.VmPolicy policy = new StrictMode.VmPolicy.Builder() 39932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .detectAll() 40032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .penaltyLog() 40132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .build(); 40232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode.setVmPolicy(policy); 40332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * </pre> 40432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 40532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final class Builder { 40632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private int mMask; 40732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 40832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 40932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Detect everything that's potentially suspect. 41032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 41132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>As of the Gingerbread release this only includes 41232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * SQLite cursor leaks but will likely expand in future 41332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * releases. 41432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 41532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectAll() { 41632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_VM_CURSOR_LEAKS); 41732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 41832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 41932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 42032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Detect when an 42132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * {@link android.database.sqlite.SQLiteCursor} or other 42232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * SQLite object is finalized without having been closed. 42332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 42432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>You always want to explicitly close your SQLite 42532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * cursors to avoid unnecessary database contention and 42632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * temporary memory leaks. 42732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 42832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectLeakedSqlLiteObjects() { 42932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_VM_CURSOR_LEAKS); 43032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 43132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 43232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 43332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Crashes the whole process on violation. This penalty runs at 43432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * the end of all enabled penalties so yo you'll still get 43532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * your logging or other violations before the process dies. 43632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 43732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyDeath() { 43832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_DEATH); 43932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 44032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 44132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 44232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Log detected violations to the system log. 44332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 44432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyLog() { 44532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_LOG); 44632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 44732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 44832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 44932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Enable detected violations log a stacktrace and timing data 45032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * to the {@link android.os.DropBoxManager DropBox} on policy 45132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * violation. Intended mostly for platform integrators doing 45232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * beta user field data collection. 45332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 45432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyDropBox() { 45532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_DROPBOX); 45632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 45732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 45832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private Builder enable(int bit) { 45932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick mMask |= bit; 46032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return this; 46132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 46232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 46332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 46432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Construct the VmPolicy instance. 46532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 46632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>Note: if no penalties are enabled before calling 46732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <code>build</code>, {@link #penaltyLog} is implicitly 46832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * set. 46932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 47032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public VmPolicy build() { 47132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // If there are detection bits set but no violation bits 47232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // set, enable simple logging. 47332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if (mMask != 0 && 47432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick (mMask & (PENALTY_DEATH | PENALTY_LOG | 47532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick PENALTY_DROPBOX | PENALTY_DIALOG)) == 0) { 47632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick penaltyLog(); 47732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 47832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new VmPolicy(mMask); 47932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 48032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 48132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 482438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 483438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 4845b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Log of strict mode violation stack traces that have occurred 4855b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * during a Binder call, to be serialized back later to the caller 4865b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * via Parcel.writeNoException() (amusingly) where the caller can 4875b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * choose how to react. 4885b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 489cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick private static final ThreadLocal<ArrayList<ViolationInfo>> gatheredViolations = 490cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick new ThreadLocal<ArrayList<ViolationInfo>>() { 491cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick @Override protected ArrayList<ViolationInfo> initialValue() { 492703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick // Starts null to avoid unnecessary allocations when 493703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick // checking whether there are any violations or not in 494703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick // hasGatheredViolations() below. 495703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick return null; 4965b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 4975b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick }; 4985b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 4995b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 50032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Sets the policy for what actions on the current thread should 50132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * be detected, as well as the penalty if such actions occur. 50215ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * 50332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>Internally this sets a thread-local variable which is 50415ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * propagated across cross-process IPC calls, meaning you can 50515ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * catch violations when a system service or another process 50615ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * accesses the disk or network on your behalf. 507438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * 50832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @param policy the policy to put into place 509438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 51032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static void setThreadPolicy(final ThreadPolicy policy) { 51132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(policy.mask); 51232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 51332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 51432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private static void setThreadPolicyMask(final int policyMask) { 515727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // In addition to the Java-level thread-local in Dalvik's 516727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // BlockGuard, we also need to keep a native thread-local in 517727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // Binder in order to propagate the value across Binder calls, 518727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // even across native-only processes. The two are kept in 519727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // sync via the callback to onStrictModePolicyChange, below. 520727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick setBlockGuardPolicy(policyMask); 521727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 522727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // And set the Android native version... 523727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick Binder.setThreadStrictModePolicy(policyMask); 524727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick } 525727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 526727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // Sets the policy in Dalvik/libcore (BlockGuard) 527727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick private static void setBlockGuardPolicy(final int policyMask) { 52846d42387464a651268648659e91d022566d4844cBrad Fitzpatrick if (policyMask == 0) { 52946d42387464a651268648659e91d022566d4844cBrad Fitzpatrick BlockGuard.setThreadPolicy(BlockGuard.LAX_POLICY); 53046d42387464a651268648659e91d022566d4844cBrad Fitzpatrick return; 53146d42387464a651268648659e91d022566d4844cBrad Fitzpatrick } 532438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick BlockGuard.Policy policy = BlockGuard.getThreadPolicy(); 533438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick if (!(policy instanceof AndroidBlockGuardPolicy)) { 534438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick BlockGuard.setThreadPolicy(new AndroidBlockGuardPolicy(policyMask)); 535438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } else { 536438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick AndroidBlockGuardPolicy androidPolicy = (AndroidBlockGuardPolicy) policy; 537438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick androidPolicy.setPolicyMask(policyMask); 538438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 539438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 540438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 5415b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static class StrictModeNetworkViolation extends BlockGuard.BlockGuardPolicyException { 5425b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick public StrictModeNetworkViolation(int policyMask) { 54332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick super(policyMask, DETECT_NETWORK); 5445b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5455b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5465b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 5475b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static class StrictModeDiskReadViolation extends BlockGuard.BlockGuardPolicyException { 5485b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick public StrictModeDiskReadViolation(int policyMask) { 54932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick super(policyMask, DETECT_DISK_READ); 5505b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5515b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5525b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 5535b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static class StrictModeDiskWriteViolation extends BlockGuard.BlockGuardPolicyException { 5545b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick public StrictModeDiskWriteViolation(int policyMask) { 55532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick super(policyMask, DETECT_DISK_WRITE); 5565b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5575b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5585b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 559438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 56015ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * Returns the bitmask of the current thread's policy. 561438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * 56232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @return the bitmask of all the DETECT_* and PENALTY_* bits currently enabled 56332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 56432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 565438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 56632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static int getThreadPolicyMask() { 567438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick return BlockGuard.getThreadPolicy().getPolicyMask(); 568438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 569438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 5705b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 57132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Returns the current thread's policy. 57232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 57332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static ThreadPolicy getThreadPolicy() { 57432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new ThreadPolicy(getThreadPolicyMask()); 57532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 57632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 57732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 57832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * A convenience wrapper that takes the current 57932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * {@link ThreadPolicy} from {@link #getThreadPolicy}, modifies it 58032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * to permit both disk reads & writes, and sets the new policy 58132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * with {@link #setThreadPolicy}, returning the old policy so you 58232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * can restore it at the end of a block. 58397461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick * 58432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @return the old policy, to be passed to {@link #setThreadPolicy} to 58532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * restore the policy at the end of a block 58697461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick */ 58732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static ThreadPolicy allowThreadDiskWrites() { 58832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int oldPolicyMask = getThreadPolicyMask(); 58932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int newPolicyMask = oldPolicyMask & ~(DETECT_DISK_WRITE | DETECT_DISK_READ); 59032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if (newPolicyMask != oldPolicyMask) { 59132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(newPolicyMask); 59297461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick } 59332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new ThreadPolicy(oldPolicyMask); 59497461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick } 59597461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick 59697461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick /** 59732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * A convenience wrapper that takes the current 59832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * {@link ThreadPolicy} from {@link #getThreadPolicy}, modifies it 59932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * to permit disk reads, and sets the new policy 60032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * with {@link #setThreadPolicy}, returning the old policy so you 60132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * can restore it at the end of a block. 60297461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick * 60332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @return the old policy, to be passed to setThreadPolicy to 60497461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick * restore the policy. 60597461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick */ 60632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static ThreadPolicy allowThreadDiskReads() { 60732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int oldPolicyMask = getThreadPolicyMask(); 60832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int newPolicyMask = oldPolicyMask & ~(DETECT_DISK_READ); 60932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if (newPolicyMask != oldPolicyMask) { 61032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(newPolicyMask); 61197461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick } 61232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new ThreadPolicy(oldPolicyMask); 61397461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick } 61497461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick 61597461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick /** 61650d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick * Enable DropBox logging for debug phone builds. 61750d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick * 61850d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick * @hide 61950d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick */ 62050d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick public static boolean conditionallyEnableDebugLogging() { 62150d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick // For debug builds, log event loop stalls to dropbox for analysis. 62250d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick // Similar logic also appears in ActivityThread.java for system apps. 62350d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick if ("user".equals(Build.TYPE)) { 62450d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick return false; 62550d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick } 62632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.setThreadPolicyMask( 62732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.DETECT_DISK_WRITE | 62832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.DETECT_DISK_READ | 62932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.DETECT_NETWORK | 63050d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick StrictMode.PENALTY_DROPBOX); 63132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick sVmPolicyMask = StrictMode.DETECT_VM_CURSOR_LEAKS | 63232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.PENALTY_DROPBOX | 63332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.PENALTY_LOG; 63450d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick return true; 63550d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick } 63650d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick 63750d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick /** 6385b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Parses the BlockGuard policy mask out from the Exception's 6395b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * getMessage() String value. Kinda gross, but least 6405b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * invasive. :/ 6415b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * 6425b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Input is of form "policy=137 violation=64" 6435b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * 6445b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Returns 0 on failure, which is a valid policy, but not a 6455b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * valid policy during a violation (else there must've been 6465b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * some policy in effect to violate). 6475b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 6485b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static int parsePolicyFromMessage(String message) { 6495b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (message == null || !message.startsWith("policy=")) { 6505b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6515b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6525b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick int spaceIndex = message.indexOf(' '); 6535b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (spaceIndex == -1) { 6545b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6555b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6565b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick String policyString = message.substring(7, spaceIndex); 6575b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick try { 6585b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return Integer.valueOf(policyString).intValue(); 6595b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } catch (NumberFormatException e) { 6605b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6615b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6625b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6635b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 6645b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 6655b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Like parsePolicyFromMessage(), but returns the violation. 6665b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 6675b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static int parseViolationFromMessage(String message) { 6685b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (message == null) { 6695b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6705b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6715b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick int violationIndex = message.indexOf("violation="); 6725b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (violationIndex == -1) { 6735b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6745b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6755b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick String violationString = message.substring(violationIndex + 10); 6765b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick try { 6775b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return Integer.valueOf(violationString).intValue(); 6785b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } catch (NumberFormatException e) { 6795b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6805b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6815b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6825b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 683438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick private static class AndroidBlockGuardPolicy implements BlockGuard.Policy { 684438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick private int mPolicyMask; 68546d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 68646d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // Map from violation stacktrace hashcode -> uptimeMillis of 68746d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // last violation. No locking needed, as this is only 68846d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // accessed by the same thread. 68946d42387464a651268648659e91d022566d4844cBrad Fitzpatrick private final HashMap<Integer, Long> mLastViolationTime = new HashMap<Integer, Long>(); 690438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 691438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public AndroidBlockGuardPolicy(final int policyMask) { 692438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick mPolicyMask = policyMask; 693438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 694438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 6955b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick @Override 6965b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick public String toString() { 6975b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return "AndroidBlockGuardPolicy; mPolicyMask=" + mPolicyMask; 6985b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6995b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 700438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick // Part of BlockGuard.Policy interface: 701438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public int getPolicyMask() { 702438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick return mPolicyMask; 703438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 704438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 705438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick // Part of BlockGuard.Policy interface: 706438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public void onWriteToDisk() { 70732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((mPolicyMask & DETECT_DISK_WRITE) == 0) { 708438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick return; 709438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 710cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick BlockGuard.BlockGuardPolicyException e = new StrictModeDiskWriteViolation(mPolicyMask); 711cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick e.fillInStackTrace(); 712cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick startHandlingViolationException(e); 713438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 714438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 715438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick // Part of BlockGuard.Policy interface: 716438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public void onReadFromDisk() { 71732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((mPolicyMask & DETECT_DISK_READ) == 0) { 718438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick return; 719438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 720cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick BlockGuard.BlockGuardPolicyException e = new StrictModeDiskReadViolation(mPolicyMask); 721cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick e.fillInStackTrace(); 722cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick startHandlingViolationException(e); 723438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 724438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 725438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick // Part of BlockGuard.Policy interface: 726438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public void onNetwork() { 72732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((mPolicyMask & DETECT_NETWORK) == 0) { 728438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick return; 729438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 730cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick BlockGuard.BlockGuardPolicyException e = new StrictModeNetworkViolation(mPolicyMask); 731cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick e.fillInStackTrace(); 732cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick startHandlingViolationException(e); 733438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 734438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 735438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public void setPolicyMask(int policyMask) { 736438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick mPolicyMask = policyMask; 737438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 738438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 7395b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // Start handling a violation that just started and hasn't 7405b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // actually run yet (e.g. no disk write or network operation 7415b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // has yet occurred). This sees if we're in an event loop 7425b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // thread and, if so, uses it to roughly measure how long the 7435b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // violation took. 7445b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick void startHandlingViolationException(BlockGuard.BlockGuardPolicyException e) { 745cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick final ViolationInfo info = new ViolationInfo(e, e.getPolicy()); 746cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick info.violationUptimeMillis = SystemClock.uptimeMillis(); 747cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick handleViolationWithTimingAttempt(info); 748cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 749438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 750cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick private static final ThreadLocal<ArrayList<ViolationInfo>> violationsBeingTimed = 751cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick new ThreadLocal<ArrayList<ViolationInfo>>() { 752cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick @Override protected ArrayList<ViolationInfo> initialValue() { 753cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick return new ArrayList<ViolationInfo>(); 754cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 755cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick }; 756cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 757cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // Attempts to fill in the provided ViolationInfo's 758cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // durationMillis field if this thread has a Looper we can use 759cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // to measure with. We measure from the time of violation 760cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // until the time the looper is idle again (right before 761cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // the next epoll_wait) 762cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick void handleViolationWithTimingAttempt(final ViolationInfo info) { 763438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick Looper looper = Looper.myLooper(); 764cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 765cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // Without a Looper, we're unable to time how long the 766cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // violation takes place. This case should be rare, as 767cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // most users will care about timing violations that 768cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // happen on their main UI thread. Note that this case is 769cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // also hit when a violation takes place in a Binder 770cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // thread, in "gather" mode. In this case, the duration 771cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // of the violation is computed by the ultimate caller and 772cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // its Looper, if any. 773cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // TODO: if in gather mode, ignore Looper.myLooper() and always 774cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // go into this immediate mode? 775438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick if (looper == null) { 776cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick info.durationMillis = -1; // unknown (redundant, already set) 777cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick handleViolation(info); 778cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick return; 779438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 780438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 781cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick MessageQueue queue = Looper.myQueue(); 782cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick final ArrayList<ViolationInfo> records = violationsBeingTimed.get(); 783cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (records.size() >= 10) { 784cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // Not worth measuring. Too many offenses in one loop. 785cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick return; 786cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 787cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick records.add(info); 788cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (records.size() > 1) { 789cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // There's already been a violation this loop, so we've already 790cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // registered an idle handler to process the list of violations 791cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // at the end of this Looper's loop. 792cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick return; 793cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 794cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 795cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick queue.addIdleHandler(new MessageQueue.IdleHandler() { 796cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public boolean queueIdle() { 797cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick long loopFinishTime = SystemClock.uptimeMillis(); 798cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick for (int n = 0; n < records.size(); ++n) { 799cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick ViolationInfo v = records.get(n); 800cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick v.violationNumThisLoop = n + 1; 801cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick v.durationMillis = 802cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick (int) (loopFinishTime - v.violationUptimeMillis); 803cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick handleViolation(v); 804cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 805cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick records.clear(); 806cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick return false; // remove this idle handler from the array 807cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 808cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick }); 8095b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 810438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 8115b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // Note: It's possible (even quite likely) that the 8125b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // thread-local policy mask has changed from the time the 8135b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // violation fired and now (after the violating code ran) due 8145b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // to people who push/pop temporary policy in regions of code, 8155b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // hence the policy being passed around. 816cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick void handleViolation(final ViolationInfo info) { 817cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (info == null || info.crashInfo == null || info.crashInfo.stackTrace == null) { 818cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick Log.wtf(TAG, "unexpected null stacktrace"); 8195b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return; 8205b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 821438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 822cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (LOG_V) Log.d(TAG, "handleViolation; policy=" + info.policy); 82346d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 824cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if ((info.policy & PENALTY_GATHER) != 0) { 825cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick ArrayList<ViolationInfo> violations = gatheredViolations.get(); 826703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick if (violations == null) { 827cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violations = new ArrayList<ViolationInfo>(1); 828703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick gatheredViolations.set(violations); 829703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick } else if (violations.size() >= 5) { 8305b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // Too many. In a loop or something? Don't gather them all. 8315b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return; 8325b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 833cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick for (ViolationInfo previous : violations) { 834cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (info.crashInfo.stackTrace.equals(previous.crashInfo.stackTrace)) { 8355b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // Duplicate. Don't log. 8365b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return; 8375b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 8385b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 839cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violations.add(info); 840727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick return; 841727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick } 842727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 84346d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // Not perfect, but fast and good enough for dup suppression. 844cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick Integer crashFingerprint = info.crashInfo.stackTrace.hashCode(); 84546d42387464a651268648659e91d022566d4844cBrad Fitzpatrick long lastViolationTime = 0; 84646d42387464a651268648659e91d022566d4844cBrad Fitzpatrick if (mLastViolationTime.containsKey(crashFingerprint)) { 84746d42387464a651268648659e91d022566d4844cBrad Fitzpatrick lastViolationTime = mLastViolationTime.get(crashFingerprint); 84846d42387464a651268648659e91d022566d4844cBrad Fitzpatrick } 84946d42387464a651268648659e91d022566d4844cBrad Fitzpatrick long now = SystemClock.uptimeMillis(); 85046d42387464a651268648659e91d022566d4844cBrad Fitzpatrick mLastViolationTime.put(crashFingerprint, now); 85146d42387464a651268648659e91d022566d4844cBrad Fitzpatrick long timeSinceLastViolationMillis = lastViolationTime == 0 ? 85246d42387464a651268648659e91d022566d4844cBrad Fitzpatrick Long.MAX_VALUE : (now - lastViolationTime); 85346d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 854cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if ((info.policy & PENALTY_LOG) != 0 && 85546d42387464a651268648659e91d022566d4844cBrad Fitzpatrick timeSinceLastViolationMillis > MIN_LOG_INTERVAL_MS) { 856cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (info.durationMillis != -1) { 8575b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick Log.d(TAG, "StrictMode policy violation; ~duration=" + 858cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick info.durationMillis + " ms: " + info.crashInfo.stackTrace); 859438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } else { 860cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick Log.d(TAG, "StrictMode policy violation: " + info.crashInfo.stackTrace); 861438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 862438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 863438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 86446d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // The violationMask, passed to ActivityManager, is a 86546d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // subset of the original StrictMode policy bitmask, with 86646d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // only the bit violated and penalty bits to be executed 86746d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // by the ActivityManagerService remaining set. 868cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick int violationMaskSubset = 0; 86946d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 870cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if ((info.policy & PENALTY_DIALOG) != 0 && 87146d42387464a651268648659e91d022566d4844cBrad Fitzpatrick timeSinceLastViolationMillis > MIN_DIALOG_INTERVAL_MS) { 872cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationMaskSubset |= PENALTY_DIALOG; 87346d42387464a651268648659e91d022566d4844cBrad Fitzpatrick } 87446d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 875cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if ((info.policy & PENALTY_DROPBOX) != 0 && lastViolationTime == 0) { 876cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationMaskSubset |= PENALTY_DROPBOX; 87746d42387464a651268648659e91d022566d4844cBrad Fitzpatrick } 87846d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 879cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (violationMaskSubset != 0) { 880cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick int violationBit = parseViolationFromMessage(info.crashInfo.exceptionMessage); 881cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationMaskSubset |= violationBit; 88232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick final int savedPolicyMask = getThreadPolicyMask(); 883438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick try { 884727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // First, remove any policy before we call into the Activity Manager, 885727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // otherwise we'll infinite recurse as we try to log policy violations 886727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // to disk, thus violating policy, thus requiring logging, etc... 887727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // We restore the current policy below, in the finally block. 88832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(0); 889727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 890438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick ActivityManagerNative.getDefault().handleApplicationStrictModeViolation( 891438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick RuntimeInit.getApplicationObject(), 892cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationMaskSubset, 893cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick info); 894438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } catch (RemoteException e) { 89546d42387464a651268648659e91d022566d4844cBrad Fitzpatrick Log.e(TAG, "RemoteException trying to handle StrictMode violation", e); 896727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick } finally { 897727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // Restore the policy. 89832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(savedPolicyMask); 899438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 900438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 901438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 902cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if ((info.policy & PENALTY_DEATH) != 0) { 903438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick System.err.println("StrictMode policy violation with POLICY_DEATH; shutting down."); 904438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick Process.killProcess(Process.myPid()); 905438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick System.exit(10); 906438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 907438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 908438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 909727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 910727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick /** 9115b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Called from Parcel.writeNoException() 9125b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 9135b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /* package */ static boolean hasGatheredViolations() { 914703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick return gatheredViolations.get() != null; 915703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick } 916703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick 917703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick /** 918703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick * Called from Parcel.writeException(), so we drop this memory and 919703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick * don't incorrectly attribute it to the wrong caller on the next 920703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick * Binder call on this thread. 921703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick */ 922703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick /* package */ static void clearGatheredViolations() { 923703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick gatheredViolations.set(null); 9245b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 9255b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 9265b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 92732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Sets the policy for what actions in the VM process (on any 92832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * thread) should be detected, as well as the penalty if such 92932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * actions occur. 93032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 93132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @param policy the policy to put into place 93232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 93332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static void setVmPolicy(final VmPolicy policy) { 93432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick sVmPolicyMask = policy.mask; 93532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 93632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 93732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 93832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Gets the current VM policy. 93932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 94032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static VmPolicy getVmPolicy() { 94132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new VmPolicy(sVmPolicyMask); 94232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 94332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 94432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 94532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 94632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 94732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static boolean vmSqliteObjectLeaksEnabled() { 94832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return (sVmPolicyMask & DETECT_VM_CURSOR_LEAKS) != 0; 94932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 95032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 95132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 95232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 95332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 95432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static void onSqliteObjectLeaked(String message, Throwable originStack) { 95532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((sVmPolicyMask & PENALTY_LOG) != 0) { 95632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick Log.e(TAG, message, originStack); 95732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 95832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 95932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((sVmPolicyMask & PENALTY_DROPBOX) != 0) { 96032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick final ViolationInfo info = new ViolationInfo(originStack, sVmPolicyMask); 96132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 96232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // The violationMask, passed to ActivityManager, is a 96332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // subset of the original StrictMode policy bitmask, with 96432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // only the bit violated and penalty bits to be executed 96532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // by the ActivityManagerService remaining set. 96632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int violationMaskSubset = PENALTY_DROPBOX | DETECT_VM_CURSOR_LEAKS; 96732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick final int savedPolicyMask = getThreadPolicyMask(); 96832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick try { 96932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // First, remove any policy before we call into the Activity Manager, 97032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // otherwise we'll infinite recurse as we try to log policy violations 97132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // to disk, thus violating policy, thus requiring logging, etc... 97232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // We restore the current policy below, in the finally block. 97332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(0); 97432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 97532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick ActivityManagerNative.getDefault().handleApplicationStrictModeViolation( 97632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick RuntimeInit.getApplicationObject(), 97732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick violationMaskSubset, 97832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick info); 97932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } catch (RemoteException e) { 98032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick Log.e(TAG, "RemoteException trying to handle StrictMode violation", e); 98132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } finally { 98232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // Restore the policy. 98332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(savedPolicyMask); 98432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 98532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 98632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 98732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((sVmPolicyMask & PENALTY_DEATH) != 0) { 98832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick System.err.println("StrictMode VmPolicy violation with POLICY_DEATH; shutting down."); 98932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick Process.killProcess(Process.myPid()); 99032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick System.exit(10); 99132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 99232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 99332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 99432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 9955b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Called from Parcel.writeNoException() 9965b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 9975b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /* package */ static void writeGatheredViolationsToParcel(Parcel p) { 998cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick ArrayList<ViolationInfo> violations = gatheredViolations.get(); 999703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick if (violations == null) { 1000703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick p.writeInt(0); 1001703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick } else { 1002703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick p.writeInt(violations.size()); 1003703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick for (int i = 0; i < violations.size(); ++i) { 1004703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick violations.get(i).writeToParcel(p, 0 /* unused flags? */); 1005703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick } 1006703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick if (LOG_V) Log.d(TAG, "wrote violations to response parcel; num=" + violations.size()); 1007703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick violations.clear(); // somewhat redundant, as we're about to null the threadlocal 10085b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 1009703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick gatheredViolations.set(null); 10105b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 10115b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 10125b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static class LogStackTrace extends Exception {} 10135b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 10145b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 10155b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Called from Parcel.readException() when the exception is EX_STRICT_MODE_VIOLATIONS, 10165b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * we here read back all the encoded violations. 10175b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 10185b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /* package */ static void readAndHandleBinderCallViolations(Parcel p) { 10195b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // Our own stack trace to append 10205b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick StringWriter sw = new StringWriter(); 1021cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick new LogStackTrace().printStackTrace(new PrintWriter(sw)); 10225b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick String ourStack = sw.toString(); 10235b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 102432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int policyMask = getThreadPolicyMask(); 1025cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick boolean currentlyGathering = (policyMask & PENALTY_GATHER) != 0; 10265b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 10275b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick int numViolations = p.readInt(); 10285b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick for (int i = 0; i < numViolations; ++i) { 10295b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (LOG_V) Log.d(TAG, "strict mode violation stacks read from binder call. i=" + i); 1030cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick ViolationInfo info = new ViolationInfo(p, !currentlyGathering); 1031cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick info.crashInfo.stackTrace += "# via Binder call with stack:\n" + ourStack; 10325b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick BlockGuard.Policy policy = BlockGuard.getThreadPolicy(); 10335b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (policy instanceof AndroidBlockGuardPolicy) { 1034cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick ((AndroidBlockGuardPolicy) policy).handleViolationWithTimingAttempt(info); 10355b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 10365b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 10375b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 10385b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 10395b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 1040727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * Called from android_util_Binder.cpp's 1041727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * android_os_Parcel_enforceInterface when an incoming Binder call 1042727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * requires changing the StrictMode policy mask. The role of this 1043727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * function is to ask Binder for its current (native) thread-local 1044727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * policy value and synchronize it to libcore's (Java) 1045727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * thread-local policy value. 1046727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick */ 1047727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick private static void onBinderStrictModePolicyChange(int newPolicy) { 1048727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick setBlockGuardPolicy(newPolicy); 1049727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick } 1050cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1051cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1052cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Parcelable that gets sent in Binder call headers back to callers 1053cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * to report violations that happened during a cross-process call. 1054cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * 1055cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * @hide 1056cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1057cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public static class ViolationInfo { 1058cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1059cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Stack and other stuff info. 1060cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1061cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public final ApplicationErrorReport.CrashInfo crashInfo; 1062cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1063cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1064cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * The strict mode policy mask at the time of violation. 1065cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1066cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public final int policy; 1067cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1068cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1069cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * The wall time duration of the violation, when known. -1 when 1070cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * not known. 1071cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1072cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public int durationMillis = -1; 1073cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1074cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1075cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Which violation number this was (1-based) since the last Looper loop, 1076cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * from the perspective of the root caller (if it crossed any processes 1077cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * via Binder calls). The value is 0 if the root caller wasn't on a Looper 1078cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * thread. 1079cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1080cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public int violationNumThisLoop; 1081cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1082cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1083cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * The time (in terms of SystemClock.uptimeMillis()) that the 1084cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * violation occurred. 1085cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1086cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public long violationUptimeMillis; 1087cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1088cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1089cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Create an uninitialized instance of ViolationInfo 1090cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1091cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public ViolationInfo() { 1092cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick crashInfo = null; 1093cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick policy = 0; 1094cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1095cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1096cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1097cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Create an instance of ViolationInfo initialized from an exception. 1098cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1099cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public ViolationInfo(Throwable tr, int policy) { 1100cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick crashInfo = new ApplicationErrorReport.CrashInfo(tr); 1101cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationUptimeMillis = SystemClock.uptimeMillis(); 1102cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick this.policy = policy; 1103cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1104cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1105cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1106cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Create an instance of ViolationInfo initialized from a Parcel. 1107cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1108cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public ViolationInfo(Parcel in) { 1109cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick this(in, false); 1110cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1111cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1112cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1113cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Create an instance of ViolationInfo initialized from a Parcel. 1114cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * 1115cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * @param unsetGatheringBit if true, the caller is the root caller 1116cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * and the gathering penalty should be removed. 1117cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1118cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public ViolationInfo(Parcel in, boolean unsetGatheringBit) { 1119cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick crashInfo = new ApplicationErrorReport.CrashInfo(in); 1120cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick int rawPolicy = in.readInt(); 1121cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (unsetGatheringBit) { 1122cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick policy = rawPolicy & ~PENALTY_GATHER; 1123cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } else { 1124cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick policy = rawPolicy; 1125cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1126cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick durationMillis = in.readInt(); 1127cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationNumThisLoop = in.readInt(); 1128cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationUptimeMillis = in.readLong(); 1129cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1130cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1131cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1132cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Save a ViolationInfo instance to a parcel. 1133cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1134cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public void writeToParcel(Parcel dest, int flags) { 1135cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick crashInfo.writeToParcel(dest, flags); 1136cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick dest.writeInt(policy); 1137cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick dest.writeInt(durationMillis); 1138cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick dest.writeInt(violationNumThisLoop); 1139cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick dest.writeLong(violationUptimeMillis); 1140cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1141cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1142cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1143cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1144cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Dump a ViolationInfo instance to a Printer. 1145cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1146cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public void dump(Printer pw, String prefix) { 1147cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick crashInfo.dump(pw, prefix); 1148cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick pw.println(prefix + "policy: " + policy); 1149cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (durationMillis != -1) { 1150cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick pw.println(prefix + "durationMillis: " + durationMillis); 1151cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1152cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (violationNumThisLoop != 0) { 1153cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick pw.println(prefix + "violationNumThisLoop: " + violationNumThisLoop); 1154cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1155cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick pw.println(prefix + "violationUptimeMillis: " + violationUptimeMillis); 1156cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1157cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1158cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1159438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick} 1160