StrictMode.java revision 191cdf023c3c1ab441087a77f7881c7bb376613a
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 107191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick // How many offending stacks to keep track of (and time) per loop 108191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick // of the Looper. 109191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick private static final int MAX_OFFENSES_PER_LOOP = 10; 110191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick 11132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // Thread-policy: 112438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 11315ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick /** 11432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 11515ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick */ 11632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final int DETECT_DISK_WRITE = 0x01; // for ThreadPolicy 11715ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick 11815ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick /** 11932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 12015ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick */ 12132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final int DETECT_DISK_READ = 0x02; // for ThreadPolicy 12215ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick 12315ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick /** 12432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 12515ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick */ 12632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final int DETECT_NETWORK = 0x04; // for ThreadPolicy 127438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 12832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // Process-policy: 129438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 130438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 13132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Note, a "VM_" bit, not thread. 13232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 13332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 13432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final int DETECT_VM_CURSOR_LEAKS = 0x200; // for ProcessPolicy 13532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 13632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 13732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 138438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 139438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public static final int PENALTY_LOG = 0x10; // normal android.util.Log 140438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 14132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // Used for both process and thread policy: 14232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 143438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 14432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 145438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 146438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public static final int PENALTY_DIALOG = 0x20; 147438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 148438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 14932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 150438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 151438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public static final int PENALTY_DEATH = 0x40; 152438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 153438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 15432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 155438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 156438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public static final int PENALTY_DROPBOX = 0x80; 157438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 158727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick /** 159727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * Non-public penalty mode which overrides all the other penalty 160727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * bits and signals that we're in a Binder call and we should 161727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * ignore the other penalty bits and instead serialize back all 162727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * our offending stack traces to the caller to ultimately handle 163727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * in the originating process. 164727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * 165703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick * This must be kept in sync with the constant in libs/binder/Parcel.cpp 166703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick * 167727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * @hide 168727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick */ 169727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick public static final int PENALTY_GATHER = 0x100; 170727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 17132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 17232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * The current VmPolicy in effect. 17332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 17432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private static volatile int sVmPolicyMask = 0; 17532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 17632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private StrictMode() {} 17732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 17832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 17932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * {@link StrictMode} policy applied to a certain thread. 18032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 18132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>The policy is enabled by {@link #setThreadPolicy}. The current policy 18232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * can be retrieved with {@link #getThreadPolicy}. 18332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 18432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>Note that multiple penalties may be provided and they're run 18532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * in order from least to most severe (logging before process 18632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * death, for example). There's currently no mechanism to choose 18732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * different penalties for different detected actions. 18832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 18932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final class ThreadPolicy { 19032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 19132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * The default, lax policy which doesn't catch anything. 19232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 19332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final ThreadPolicy LAX = new ThreadPolicy(0); 19432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 19532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick final int mask; 19632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 19732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private ThreadPolicy(int mask) { 19832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick this.mask = mask; 19932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 20032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 20132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick @Override 20232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public String toString() { 20332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return "[StrictMode.ThreadPolicy; mask=" + mask + "]"; 20432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 20532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 20632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 20732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Creates ThreadPolicy instances. Methods whose names start 20832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * with {@code detect} specify what problems we should look 20932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * for. Methods whose names start with {@code penalty} specify what 21032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * we should do when we detect a problem. 21132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 21232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>You can call as many {@code detect} and {@code penalty} 21332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * methods as you like. Currently order is insignificant: all 21432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * penalties apply to all detected problems. 21532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 21632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>For example, detect everything and log anything that's found: 21732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <pre> 21832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode.VmPolicy policy = new StrictMode.VmPolicy.Builder() 21932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .detectAll() 22032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .penaltyLog() 22132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .build(); 22232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode.setVmPolicy(policy); 22332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * </pre> 22432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 22532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final class Builder { 22632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private int mMask = 0; 22732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 22832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 22932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Create a Builder that detects nothing and has no 23032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * violations. (but note that {@link #build} will default 23132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * to enabling {@link #penaltyLog} if no other penalties 23232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * are specified) 23332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 23432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder() { 23532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick mMask = 0; 23632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 23732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 23832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 23932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Initialize a Builder from an existing ThreadPolicy. 24032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 24132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder(ThreadPolicy policy) { 24232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick mMask = policy.mask; 24332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 24432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 24532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 24632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Detect everything that's potentially suspect. 24732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 24832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>As of the Gingerbread release this includes network and 24932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * disk operations but will likely expand in future releases. 25032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 25132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectAll() { 25232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_DISK_WRITE | DETECT_DISK_READ | DETECT_NETWORK); 25332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 25432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 25532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 25632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Disable the detection of everything. 25732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 25832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder permitAll() { 25932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return disable(DETECT_DISK_WRITE | DETECT_DISK_READ | DETECT_NETWORK); 26032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 26132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 26232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 26332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Enable detection of network operations. 26432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 26532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectNetwork() { 26632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_NETWORK); 26732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 26832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 26932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 27032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Disable detection of network operations. 27132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 27232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder permitNetwork() { 27332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return disable(DETECT_NETWORK); 27432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 27532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 27632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 27732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Enable detection of disk reads. 27832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 27932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectDiskReads() { 28032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_DISK_READ); 28132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 28232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 28332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 28432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Disable detection of disk reads. 28532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 28632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder permitDiskReads() { 28732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return disable(DETECT_DISK_READ); 28832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 28932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 29032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 29132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Enable detection of disk writes. 29232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 29332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectDiskWrites() { 29432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_DISK_WRITE); 29532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 29632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 29732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 29832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Disable detection of disk writes. 29932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 30032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder permitDiskWrites() { 30132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return disable(DETECT_DISK_WRITE); 30232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 30332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 30432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 30532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Show an annoying dialog to the developer on detected 30632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * violations, rate-limited to be only a little annoying. 30732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 30832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyDialog() { 30932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_DIALOG); 31032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 31132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 31232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 31332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Crash the whole process on violation. This penalty runs at 31432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * the end of all enabled penalties so you'll still get 31532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * see logging or other violations before the process dies. 31632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 31732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyDeath() { 31832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_DEATH); 31932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 32032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 32132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 32232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Log detected violations to the system log. 32332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 32432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyLog() { 32532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_LOG); 32632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 32732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 32832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 32932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Enable detected violations log a stacktrace and timing data 33032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * to the {@link android.os.DropBoxManager DropBox} on policy 33132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * violation. Intended mostly for platform integrators doing 33232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * beta user field data collection. 33332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 33432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyDropBox() { 33532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_DROPBOX); 33632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 33732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 33832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private Builder enable(int bit) { 33932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick mMask |= bit; 34032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return this; 34132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 34232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 34332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private Builder disable(int bit) { 34432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick mMask &= ~bit; 34532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return this; 34632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 34732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 34832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 34932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Construct the ThreadPolicy instance. 35032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 35132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>Note: if no penalties are enabled before calling 35232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <code>build</code>, {@link #penaltyLog} is implicitly 35332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * set. 35432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 35532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public ThreadPolicy build() { 35632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // If there are detection bits set but no violation bits 35732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // set, enable simple logging. 35832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if (mMask != 0 && 35932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick (mMask & (PENALTY_DEATH | PENALTY_LOG | 36032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick PENALTY_DROPBOX | PENALTY_DIALOG)) == 0) { 36132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick penaltyLog(); 36232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 36332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new ThreadPolicy(mMask); 36432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 36532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 36632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 36732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 36832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 36932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * {@link StrictMode} policy applied to all threads in the virtual machine's process. 37032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 37132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>The policy is enabled by {@link #setVmPolicy}. 37232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 37332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final class VmPolicy { 37432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 37532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * The default, lax policy which doesn't catch anything. 37632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 37732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final VmPolicy LAX = new VmPolicy(0); 37832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 37932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick final int mask; 38032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 38132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private VmPolicy(int mask) { 38232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick this.mask = mask; 38332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 38432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 38532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick @Override 38632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public String toString() { 38732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return "[StrictMode.VmPolicy; mask=" + mask + "]"; 38832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 38932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 39032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 39132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Creates {@link VmPolicy} instances. Methods whose names start 39232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * with {@code detect} specify what problems we should look 39332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * for. Methods whose names start with {@code penalty} specify what 39432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * we should do when we detect a problem. 39532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 39632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>You can call as many {@code detect} and {@code penalty} 39732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * methods as you like. Currently order is insignificant: all 39832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * penalties apply to all detected problems. 39932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 40032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>For example, detect everything and log anything that's found: 40132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <pre> 40232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode.VmPolicy policy = new StrictMode.VmPolicy.Builder() 40332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .detectAll() 40432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .penaltyLog() 40532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * .build(); 40632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * StrictMode.setVmPolicy(policy); 40732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * </pre> 40832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 40932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static final class Builder { 41032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private int mMask; 41132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 41232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 41332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Detect everything that's potentially suspect. 41432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 41532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>As of the Gingerbread release this only includes 41632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * SQLite cursor leaks but will likely expand in future 41732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * releases. 41832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 41932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectAll() { 42032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_VM_CURSOR_LEAKS); 42132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 42232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 42332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 42432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Detect when an 42532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * {@link android.database.sqlite.SQLiteCursor} or other 42632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * SQLite object is finalized without having been closed. 42732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 42832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>You always want to explicitly close your SQLite 42932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * cursors to avoid unnecessary database contention and 43032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * temporary memory leaks. 43132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 43232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder detectLeakedSqlLiteObjects() { 43332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(DETECT_VM_CURSOR_LEAKS); 43432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 43532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 43632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 43732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Crashes the whole process on violation. This penalty runs at 43832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * the end of all enabled penalties so yo you'll still get 43932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * your logging or other violations before the process dies. 44032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 44132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyDeath() { 44232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_DEATH); 44332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 44432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 44532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 44632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Log detected violations to the system log. 44732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 44832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyLog() { 44932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_LOG); 45032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 45132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 45232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 45332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Enable detected violations log a stacktrace and timing data 45432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * to the {@link android.os.DropBoxManager DropBox} on policy 45532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * violation. Intended mostly for platform integrators doing 45632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * beta user field data collection. 45732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 45832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public Builder penaltyDropBox() { 45932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return enable(PENALTY_DROPBOX); 46032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 46132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 46232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private Builder enable(int bit) { 46332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick mMask |= bit; 46432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return this; 46532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 46632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 46732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 46832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Construct the VmPolicy instance. 46932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 47032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>Note: if no penalties are enabled before calling 47132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <code>build</code>, {@link #penaltyLog} is implicitly 47232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * set. 47332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 47432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public VmPolicy build() { 47532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // If there are detection bits set but no violation bits 47632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // set, enable simple logging. 47732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if (mMask != 0 && 47832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick (mMask & (PENALTY_DEATH | PENALTY_LOG | 47932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick PENALTY_DROPBOX | PENALTY_DIALOG)) == 0) { 48032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick penaltyLog(); 48132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 48232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new VmPolicy(mMask); 48332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 48432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 48532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 486438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 487438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 4885b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Log of strict mode violation stack traces that have occurred 4895b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * during a Binder call, to be serialized back later to the caller 4905b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * via Parcel.writeNoException() (amusingly) where the caller can 4915b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * choose how to react. 4925b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 493cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick private static final ThreadLocal<ArrayList<ViolationInfo>> gatheredViolations = 494cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick new ThreadLocal<ArrayList<ViolationInfo>>() { 495cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick @Override protected ArrayList<ViolationInfo> initialValue() { 496703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick // Starts null to avoid unnecessary allocations when 497703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick // checking whether there are any violations or not in 498703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick // hasGatheredViolations() below. 499703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick return null; 5005b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5015b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick }; 5025b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 5035b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 50432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Sets the policy for what actions on the current thread should 50532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * be detected, as well as the penalty if such actions occur. 50615ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * 50732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * <p>Internally this sets a thread-local variable which is 50815ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * propagated across cross-process IPC calls, meaning you can 50915ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * catch violations when a system service or another process 51015ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * accesses the disk or network on your behalf. 511438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * 51232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @param policy the policy to put into place 513438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 51432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static void setThreadPolicy(final ThreadPolicy policy) { 51532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(policy.mask); 51632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 51732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 51832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick private static void setThreadPolicyMask(final int policyMask) { 519727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // In addition to the Java-level thread-local in Dalvik's 520727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // BlockGuard, we also need to keep a native thread-local in 521727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // Binder in order to propagate the value across Binder calls, 522727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // even across native-only processes. The two are kept in 523727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // sync via the callback to onStrictModePolicyChange, below. 524727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick setBlockGuardPolicy(policyMask); 525727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 526727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // And set the Android native version... 527727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick Binder.setThreadStrictModePolicy(policyMask); 528727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick } 529727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 530727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // Sets the policy in Dalvik/libcore (BlockGuard) 531727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick private static void setBlockGuardPolicy(final int policyMask) { 53246d42387464a651268648659e91d022566d4844cBrad Fitzpatrick if (policyMask == 0) { 53346d42387464a651268648659e91d022566d4844cBrad Fitzpatrick BlockGuard.setThreadPolicy(BlockGuard.LAX_POLICY); 53446d42387464a651268648659e91d022566d4844cBrad Fitzpatrick return; 53546d42387464a651268648659e91d022566d4844cBrad Fitzpatrick } 536438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick BlockGuard.Policy policy = BlockGuard.getThreadPolicy(); 537438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick if (!(policy instanceof AndroidBlockGuardPolicy)) { 538438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick BlockGuard.setThreadPolicy(new AndroidBlockGuardPolicy(policyMask)); 539438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } else { 540438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick AndroidBlockGuardPolicy androidPolicy = (AndroidBlockGuardPolicy) policy; 541438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick androidPolicy.setPolicyMask(policyMask); 542438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 543438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 544438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 5455b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static class StrictModeNetworkViolation extends BlockGuard.BlockGuardPolicyException { 5465b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick public StrictModeNetworkViolation(int policyMask) { 54732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick super(policyMask, DETECT_NETWORK); 5485b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5495b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5505b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 5515b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static class StrictModeDiskReadViolation extends BlockGuard.BlockGuardPolicyException { 5525b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick public StrictModeDiskReadViolation(int policyMask) { 55332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick super(policyMask, DETECT_DISK_READ); 5545b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5555b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5565b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 5575b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static class StrictModeDiskWriteViolation extends BlockGuard.BlockGuardPolicyException { 5585b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick public StrictModeDiskWriteViolation(int policyMask) { 55932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick super(policyMask, DETECT_DISK_WRITE); 5605b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5615b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 5625b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 563438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick /** 56415ba4061116e088d62a7e05a0037f294f31dff06Brad Fitzpatrick * Returns the bitmask of the current thread's policy. 565438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick * 56632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @return the bitmask of all the DETECT_* and PENALTY_* bits currently enabled 56732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 56832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 569438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick */ 57032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static int getThreadPolicyMask() { 571438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick return BlockGuard.getThreadPolicy().getPolicyMask(); 572438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 573438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 5745b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 57532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Returns the current thread's policy. 57632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 57732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static ThreadPolicy getThreadPolicy() { 57832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new ThreadPolicy(getThreadPolicyMask()); 57932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 58032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 58132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 58232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * A convenience wrapper that takes the current 58332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * {@link ThreadPolicy} from {@link #getThreadPolicy}, modifies it 58432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * to permit both disk reads & writes, and sets the new policy 58532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * with {@link #setThreadPolicy}, returning the old policy so you 58632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * can restore it at the end of a block. 58797461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick * 58832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @return the old policy, to be passed to {@link #setThreadPolicy} to 58932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * restore the policy at the end of a block 59097461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick */ 59132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static ThreadPolicy allowThreadDiskWrites() { 59232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int oldPolicyMask = getThreadPolicyMask(); 59332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int newPolicyMask = oldPolicyMask & ~(DETECT_DISK_WRITE | DETECT_DISK_READ); 59432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if (newPolicyMask != oldPolicyMask) { 59532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(newPolicyMask); 59697461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick } 59732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new ThreadPolicy(oldPolicyMask); 59897461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick } 59997461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick 60097461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick /** 60132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * A convenience wrapper that takes the current 60232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * {@link ThreadPolicy} from {@link #getThreadPolicy}, modifies it 60332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * to permit disk reads, and sets the new policy 60432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * with {@link #setThreadPolicy}, returning the old policy so you 60532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * can restore it at the end of a block. 60697461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick * 60732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @return the old policy, to be passed to setThreadPolicy to 60897461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick * restore the policy. 60997461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick */ 61032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static ThreadPolicy allowThreadDiskReads() { 61132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int oldPolicyMask = getThreadPolicyMask(); 61232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int newPolicyMask = oldPolicyMask & ~(DETECT_DISK_READ); 61332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if (newPolicyMask != oldPolicyMask) { 61432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(newPolicyMask); 61597461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick } 61632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new ThreadPolicy(oldPolicyMask); 61797461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick } 61897461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick 61997461bd25c3821f3fb6af9705f0612259c6b4492Brad Fitzpatrick /** 62050d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick * Enable DropBox logging for debug phone builds. 62150d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick * 62250d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick * @hide 62350d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick */ 62450d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick public static boolean conditionallyEnableDebugLogging() { 62550d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick // For debug builds, log event loop stalls to dropbox for analysis. 62650d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick // Similar logic also appears in ActivityThread.java for system apps. 62750d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick if ("user".equals(Build.TYPE)) { 62850d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick return false; 62950d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick } 63032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.setThreadPolicyMask( 63132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.DETECT_DISK_WRITE | 63232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.DETECT_DISK_READ | 63332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.DETECT_NETWORK | 63450d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick StrictMode.PENALTY_DROPBOX); 63532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick sVmPolicyMask = StrictMode.DETECT_VM_CURSOR_LEAKS | 63632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.PENALTY_DROPBOX | 63732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick StrictMode.PENALTY_LOG; 63850d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick return true; 63950d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick } 64050d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick 64150d66f9fcdac84b2af65a82be56728f54b1a7ef0Brad Fitzpatrick /** 6425b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Parses the BlockGuard policy mask out from the Exception's 6435b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * getMessage() String value. Kinda gross, but least 6445b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * invasive. :/ 6455b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * 6465b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Input is of form "policy=137 violation=64" 6475b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * 6485b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Returns 0 on failure, which is a valid policy, but not a 6495b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * valid policy during a violation (else there must've been 6505b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * some policy in effect to violate). 6515b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 6525b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static int parsePolicyFromMessage(String message) { 6535b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (message == null || !message.startsWith("policy=")) { 6545b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6555b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6565b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick int spaceIndex = message.indexOf(' '); 6575b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (spaceIndex == -1) { 6585b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6595b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6605b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick String policyString = message.substring(7, spaceIndex); 6615b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick try { 6625b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return Integer.valueOf(policyString).intValue(); 6635b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } catch (NumberFormatException e) { 6645b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6655b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6665b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6675b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 6685b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 6695b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Like parsePolicyFromMessage(), but returns the violation. 6705b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 6715b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static int parseViolationFromMessage(String message) { 6725b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (message == null) { 6735b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6745b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6755b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick int violationIndex = message.indexOf("violation="); 6765b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (violationIndex == -1) { 6775b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6785b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6795b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick String violationString = message.substring(violationIndex + 10); 6805b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick try { 6815b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return Integer.valueOf(violationString).intValue(); 6825b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } catch (NumberFormatException e) { 6835b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return 0; 6845b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6855b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 6865b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 687191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick private static final ThreadLocal<ArrayList<ViolationInfo>> violationsBeingTimed = 688191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick new ThreadLocal<ArrayList<ViolationInfo>>() { 689191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick @Override protected ArrayList<ViolationInfo> initialValue() { 690191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick return new ArrayList<ViolationInfo>(); 691191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick } 692191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick }; 693191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick 694191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick private static boolean tooManyViolationsThisLoop() { 695191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick return violationsBeingTimed.get().size() >= MAX_OFFENSES_PER_LOOP; 696191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick } 697191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick 698438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick private static class AndroidBlockGuardPolicy implements BlockGuard.Policy { 699438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick private int mPolicyMask; 70046d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 70146d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // Map from violation stacktrace hashcode -> uptimeMillis of 70246d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // last violation. No locking needed, as this is only 70346d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // accessed by the same thread. 70446d42387464a651268648659e91d022566d4844cBrad Fitzpatrick private final HashMap<Integer, Long> mLastViolationTime = new HashMap<Integer, Long>(); 705438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 706438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public AndroidBlockGuardPolicy(final int policyMask) { 707438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick mPolicyMask = policyMask; 708438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 709438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 7105b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick @Override 7115b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick public String toString() { 7125b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return "AndroidBlockGuardPolicy; mPolicyMask=" + mPolicyMask; 7135b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 7145b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 715438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick // Part of BlockGuard.Policy interface: 716438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public int getPolicyMask() { 717438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick return mPolicyMask; 718438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 719438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 720438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick // Part of BlockGuard.Policy interface: 721438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public void onWriteToDisk() { 72232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((mPolicyMask & DETECT_DISK_WRITE) == 0) { 723438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick return; 724438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 725191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick if (tooManyViolationsThisLoop()) { 726191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick return; 727191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick } 728cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick BlockGuard.BlockGuardPolicyException e = new StrictModeDiskWriteViolation(mPolicyMask); 729cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick e.fillInStackTrace(); 730cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick startHandlingViolationException(e); 731438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 732438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 733438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick // Part of BlockGuard.Policy interface: 734438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public void onReadFromDisk() { 73532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((mPolicyMask & DETECT_DISK_READ) == 0) { 736438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick return; 737438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 738191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick if (tooManyViolationsThisLoop()) { 739191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick return; 740191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick } 741cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick BlockGuard.BlockGuardPolicyException e = new StrictModeDiskReadViolation(mPolicyMask); 742cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick e.fillInStackTrace(); 743cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick startHandlingViolationException(e); 744438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 745438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 746438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick // Part of BlockGuard.Policy interface: 747438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public void onNetwork() { 74832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((mPolicyMask & DETECT_NETWORK) == 0) { 749438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick return; 750438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 751191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick if (tooManyViolationsThisLoop()) { 752191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick return; 753191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick } 754cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick BlockGuard.BlockGuardPolicyException e = new StrictModeNetworkViolation(mPolicyMask); 755cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick e.fillInStackTrace(); 756cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick startHandlingViolationException(e); 757438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 758438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 759438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick public void setPolicyMask(int policyMask) { 760438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick mPolicyMask = policyMask; 761438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 762438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 7635b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // Start handling a violation that just started and hasn't 7645b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // actually run yet (e.g. no disk write or network operation 7655b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // has yet occurred). This sees if we're in an event loop 7665b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // thread and, if so, uses it to roughly measure how long the 7675b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // violation took. 7685b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick void startHandlingViolationException(BlockGuard.BlockGuardPolicyException e) { 769cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick final ViolationInfo info = new ViolationInfo(e, e.getPolicy()); 770cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick info.violationUptimeMillis = SystemClock.uptimeMillis(); 771cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick handleViolationWithTimingAttempt(info); 772cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 773438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 774cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // Attempts to fill in the provided ViolationInfo's 775cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // durationMillis field if this thread has a Looper we can use 776cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // to measure with. We measure from the time of violation 777cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // until the time the looper is idle again (right before 778cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // the next epoll_wait) 779cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick void handleViolationWithTimingAttempt(final ViolationInfo info) { 780438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick Looper looper = Looper.myLooper(); 781cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 782cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // Without a Looper, we're unable to time how long the 783cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // violation takes place. This case should be rare, as 784cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // most users will care about timing violations that 785cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // happen on their main UI thread. Note that this case is 786cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // also hit when a violation takes place in a Binder 787cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // thread, in "gather" mode. In this case, the duration 788cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // of the violation is computed by the ultimate caller and 789cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // its Looper, if any. 790cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // TODO: if in gather mode, ignore Looper.myLooper() and always 791cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // go into this immediate mode? 792438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick if (looper == null) { 793cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick info.durationMillis = -1; // unknown (redundant, already set) 794cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick handleViolation(info); 795cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick return; 796438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 797438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 798cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick MessageQueue queue = Looper.myQueue(); 799cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick final ArrayList<ViolationInfo> records = violationsBeingTimed.get(); 800191cdf023c3c1ab441087a77f7881c7bb376613aBrad Fitzpatrick if (records.size() >= MAX_OFFENSES_PER_LOOP) { 801cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // Not worth measuring. Too many offenses in one loop. 802cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick return; 803cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 804cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick records.add(info); 805cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (records.size() > 1) { 806cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // There's already been a violation this loop, so we've already 807cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // registered an idle handler to process the list of violations 808cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick // at the end of this Looper's loop. 809cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick return; 810cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 811cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 812cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick queue.addIdleHandler(new MessageQueue.IdleHandler() { 813cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public boolean queueIdle() { 814cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick long loopFinishTime = SystemClock.uptimeMillis(); 815cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick for (int n = 0; n < records.size(); ++n) { 816cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick ViolationInfo v = records.get(n); 817cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick v.violationNumThisLoop = n + 1; 818cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick v.durationMillis = 819cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick (int) (loopFinishTime - v.violationUptimeMillis); 820cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick handleViolation(v); 821cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 822cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick records.clear(); 823cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick return false; // remove this idle handler from the array 824cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 825cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick }); 8265b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 827438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 8285b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // Note: It's possible (even quite likely) that the 8295b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // thread-local policy mask has changed from the time the 8305b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // violation fired and now (after the violating code ran) due 8315b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // to people who push/pop temporary policy in regions of code, 8325b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // hence the policy being passed around. 833cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick void handleViolation(final ViolationInfo info) { 834cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (info == null || info.crashInfo == null || info.crashInfo.stackTrace == null) { 835cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick Log.wtf(TAG, "unexpected null stacktrace"); 8365b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return; 8375b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 838438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 839cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (LOG_V) Log.d(TAG, "handleViolation; policy=" + info.policy); 84046d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 841cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if ((info.policy & PENALTY_GATHER) != 0) { 842cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick ArrayList<ViolationInfo> violations = gatheredViolations.get(); 843703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick if (violations == null) { 844cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violations = new ArrayList<ViolationInfo>(1); 845703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick gatheredViolations.set(violations); 846703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick } else if (violations.size() >= 5) { 8475b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // Too many. In a loop or something? Don't gather them all. 8485b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return; 8495b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 850cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick for (ViolationInfo previous : violations) { 851cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (info.crashInfo.stackTrace.equals(previous.crashInfo.stackTrace)) { 8525b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // Duplicate. Don't log. 8535b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick return; 8545b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 8555b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 856cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violations.add(info); 857727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick return; 858727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick } 859727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 86046d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // Not perfect, but fast and good enough for dup suppression. 861cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick Integer crashFingerprint = info.crashInfo.stackTrace.hashCode(); 86246d42387464a651268648659e91d022566d4844cBrad Fitzpatrick long lastViolationTime = 0; 86346d42387464a651268648659e91d022566d4844cBrad Fitzpatrick if (mLastViolationTime.containsKey(crashFingerprint)) { 86446d42387464a651268648659e91d022566d4844cBrad Fitzpatrick lastViolationTime = mLastViolationTime.get(crashFingerprint); 86546d42387464a651268648659e91d022566d4844cBrad Fitzpatrick } 86646d42387464a651268648659e91d022566d4844cBrad Fitzpatrick long now = SystemClock.uptimeMillis(); 86746d42387464a651268648659e91d022566d4844cBrad Fitzpatrick mLastViolationTime.put(crashFingerprint, now); 86846d42387464a651268648659e91d022566d4844cBrad Fitzpatrick long timeSinceLastViolationMillis = lastViolationTime == 0 ? 86946d42387464a651268648659e91d022566d4844cBrad Fitzpatrick Long.MAX_VALUE : (now - lastViolationTime); 87046d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 871cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if ((info.policy & PENALTY_LOG) != 0 && 87246d42387464a651268648659e91d022566d4844cBrad Fitzpatrick timeSinceLastViolationMillis > MIN_LOG_INTERVAL_MS) { 873cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (info.durationMillis != -1) { 8745b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick Log.d(TAG, "StrictMode policy violation; ~duration=" + 875cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick info.durationMillis + " ms: " + info.crashInfo.stackTrace); 876438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } else { 877cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick Log.d(TAG, "StrictMode policy violation: " + info.crashInfo.stackTrace); 878438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 879438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 880438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 88146d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // The violationMask, passed to ActivityManager, is a 88246d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // subset of the original StrictMode policy bitmask, with 88346d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // only the bit violated and penalty bits to be executed 88446d42387464a651268648659e91d022566d4844cBrad Fitzpatrick // by the ActivityManagerService remaining set. 885cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick int violationMaskSubset = 0; 88646d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 887cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if ((info.policy & PENALTY_DIALOG) != 0 && 88846d42387464a651268648659e91d022566d4844cBrad Fitzpatrick timeSinceLastViolationMillis > MIN_DIALOG_INTERVAL_MS) { 889cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationMaskSubset |= PENALTY_DIALOG; 89046d42387464a651268648659e91d022566d4844cBrad Fitzpatrick } 89146d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 892cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if ((info.policy & PENALTY_DROPBOX) != 0 && lastViolationTime == 0) { 893cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationMaskSubset |= PENALTY_DROPBOX; 89446d42387464a651268648659e91d022566d4844cBrad Fitzpatrick } 89546d42387464a651268648659e91d022566d4844cBrad Fitzpatrick 896cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (violationMaskSubset != 0) { 897cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick int violationBit = parseViolationFromMessage(info.crashInfo.exceptionMessage); 898cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationMaskSubset |= violationBit; 89932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick final int savedPolicyMask = getThreadPolicyMask(); 900438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick try { 901727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // First, remove any policy before we call into the Activity Manager, 902727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // otherwise we'll infinite recurse as we try to log policy violations 903727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // to disk, thus violating policy, thus requiring logging, etc... 904727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // We restore the current policy below, in the finally block. 90532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(0); 906727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 907438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick ActivityManagerNative.getDefault().handleApplicationStrictModeViolation( 908438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick RuntimeInit.getApplicationObject(), 909cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationMaskSubset, 910cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick info); 911438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } catch (RemoteException e) { 91246d42387464a651268648659e91d022566d4844cBrad Fitzpatrick Log.e(TAG, "RemoteException trying to handle StrictMode violation", e); 913727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick } finally { 914727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick // Restore the policy. 91532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(savedPolicyMask); 916438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 917438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 918438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick 919cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if ((info.policy & PENALTY_DEATH) != 0) { 920438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick System.err.println("StrictMode policy violation with POLICY_DEATH; shutting down."); 921438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick Process.killProcess(Process.myPid()); 922438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick System.exit(10); 923438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 924438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 925438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick } 926727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick 927727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick /** 9285b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Called from Parcel.writeNoException() 9295b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 9305b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /* package */ static boolean hasGatheredViolations() { 931703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick return gatheredViolations.get() != null; 932703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick } 933703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick 934703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick /** 935703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick * Called from Parcel.writeException(), so we drop this memory and 936703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick * don't incorrectly attribute it to the wrong caller on the next 937703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick * Binder call on this thread. 938703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick */ 939703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick /* package */ static void clearGatheredViolations() { 940703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick gatheredViolations.set(null); 9415b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 9425b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 9435b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 94432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Sets the policy for what actions in the VM process (on any 94532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * thread) should be detected, as well as the penalty if such 94632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * actions occur. 94732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * 94832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @param policy the policy to put into place 94932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 95032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static void setVmPolicy(final VmPolicy policy) { 95132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick sVmPolicyMask = policy.mask; 95232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 95332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 95432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 95532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * Gets the current VM policy. 95632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 95732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static VmPolicy getVmPolicy() { 95832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return new VmPolicy(sVmPolicyMask); 95932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 96032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 96132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 96232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 96332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 96432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static boolean vmSqliteObjectLeaksEnabled() { 96532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick return (sVmPolicyMask & DETECT_VM_CURSOR_LEAKS) != 0; 96632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 96732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 96832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 96932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick * @hide 97032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick */ 97132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick public static void onSqliteObjectLeaked(String message, Throwable originStack) { 97232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((sVmPolicyMask & PENALTY_LOG) != 0) { 97332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick Log.e(TAG, message, originStack); 97432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 97532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 97632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((sVmPolicyMask & PENALTY_DROPBOX) != 0) { 97732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick final ViolationInfo info = new ViolationInfo(originStack, sVmPolicyMask); 97832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 97932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // The violationMask, passed to ActivityManager, is a 98032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // subset of the original StrictMode policy bitmask, with 98132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // only the bit violated and penalty bits to be executed 98232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // by the ActivityManagerService remaining set. 98332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int violationMaskSubset = PENALTY_DROPBOX | DETECT_VM_CURSOR_LEAKS; 98432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick final int savedPolicyMask = getThreadPolicyMask(); 98532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick try { 98632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // First, remove any policy before we call into the Activity Manager, 98732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // otherwise we'll infinite recurse as we try to log policy violations 98832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // to disk, thus violating policy, thus requiring logging, etc... 98932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // We restore the current policy below, in the finally block. 99032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(0); 99132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 99232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick ActivityManagerNative.getDefault().handleApplicationStrictModeViolation( 99332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick RuntimeInit.getApplicationObject(), 99432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick violationMaskSubset, 99532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick info); 99632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } catch (RemoteException e) { 99732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick Log.e(TAG, "RemoteException trying to handle StrictMode violation", e); 99832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } finally { 99932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick // Restore the policy. 100032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick setThreadPolicyMask(savedPolicyMask); 100132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 100232e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 100332e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 100432e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick if ((sVmPolicyMask & PENALTY_DEATH) != 0) { 100532e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick System.err.println("StrictMode VmPolicy violation with POLICY_DEATH; shutting down."); 100632e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick Process.killProcess(Process.myPid()); 100732e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick System.exit(10); 100832e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 100932e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick } 101032e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick 101132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick /** 10125b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Called from Parcel.writeNoException() 10135b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 10145b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /* package */ static void writeGatheredViolationsToParcel(Parcel p) { 1015cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick ArrayList<ViolationInfo> violations = gatheredViolations.get(); 1016703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick if (violations == null) { 1017703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick p.writeInt(0); 1018703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick } else { 1019703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick p.writeInt(violations.size()); 1020703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick for (int i = 0; i < violations.size(); ++i) { 1021703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick violations.get(i).writeToParcel(p, 0 /* unused flags? */); 1022703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick } 1023703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick if (LOG_V) Log.d(TAG, "wrote violations to response parcel; num=" + violations.size()); 1024703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick violations.clear(); // somewhat redundant, as we're about to null the threadlocal 10255b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 1026703e5d3c7fbeb8ca0978045db01d40318f838612Brad Fitzpatrick gatheredViolations.set(null); 10275b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 10285b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 10295b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick private static class LogStackTrace extends Exception {} 10305b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 10315b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 10325b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * Called from Parcel.readException() when the exception is EX_STRICT_MODE_VIOLATIONS, 10335b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick * we here read back all the encoded violations. 10345b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick */ 10355b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /* package */ static void readAndHandleBinderCallViolations(Parcel p) { 10365b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick // Our own stack trace to append 10375b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick StringWriter sw = new StringWriter(); 1038cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick new LogStackTrace().printStackTrace(new PrintWriter(sw)); 10395b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick String ourStack = sw.toString(); 10405b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 104132e60c7942eeba920ec5c27b372ec0899fd75a20Brad Fitzpatrick int policyMask = getThreadPolicyMask(); 1042cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick boolean currentlyGathering = (policyMask & PENALTY_GATHER) != 0; 10435b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 10445b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick int numViolations = p.readInt(); 10455b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick for (int i = 0; i < numViolations; ++i) { 10465b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (LOG_V) Log.d(TAG, "strict mode violation stacks read from binder call. i=" + i); 1047cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick ViolationInfo info = new ViolationInfo(p, !currentlyGathering); 1048cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick info.crashInfo.stackTrace += "# via Binder call with stack:\n" + ourStack; 10495b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick BlockGuard.Policy policy = BlockGuard.getThreadPolicy(); 10505b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick if (policy instanceof AndroidBlockGuardPolicy) { 1051cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick ((AndroidBlockGuardPolicy) policy).handleViolationWithTimingAttempt(info); 10525b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 10535b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 10545b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick } 10555b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick 10565b747191ff8ad43a54d41faf50436271d1d7fcc8Brad Fitzpatrick /** 1057727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * Called from android_util_Binder.cpp's 1058727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * android_os_Parcel_enforceInterface when an incoming Binder call 1059727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * requires changing the StrictMode policy mask. The role of this 1060727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * function is to ask Binder for its current (native) thread-local 1061727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * policy value and synchronize it to libcore's (Java) 1062727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick * thread-local policy value. 1063727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick */ 1064727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick private static void onBinderStrictModePolicyChange(int newPolicy) { 1065727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick setBlockGuardPolicy(newPolicy); 1066727de40c6bc7c6521a0542ea9def5d5c7b1c5e06Brad Fitzpatrick } 1067cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1068cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1069cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Parcelable that gets sent in Binder call headers back to callers 1070cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * to report violations that happened during a cross-process call. 1071cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * 1072cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * @hide 1073cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1074cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public static class ViolationInfo { 1075cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1076cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Stack and other stuff info. 1077cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1078cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public final ApplicationErrorReport.CrashInfo crashInfo; 1079cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1080cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1081cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * The strict mode policy mask at the time of violation. 1082cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1083cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public final int policy; 1084cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1085cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1086cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * The wall time duration of the violation, when known. -1 when 1087cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * not known. 1088cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1089cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public int durationMillis = -1; 1090cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1091cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1092cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Which violation number this was (1-based) since the last Looper loop, 1093cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * from the perspective of the root caller (if it crossed any processes 1094cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * via Binder calls). The value is 0 if the root caller wasn't on a Looper 1095cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * thread. 1096cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1097cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public int violationNumThisLoop; 1098cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1099cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1100cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * The time (in terms of SystemClock.uptimeMillis()) that the 1101cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * violation occurred. 1102cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1103cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public long violationUptimeMillis; 1104cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1105cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1106cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Create an uninitialized instance of ViolationInfo 1107cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1108cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public ViolationInfo() { 1109cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick crashInfo = null; 1110cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick policy = 0; 1111cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1112cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1113cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1114cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Create an instance of ViolationInfo initialized from an exception. 1115cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1116cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public ViolationInfo(Throwable tr, int policy) { 1117cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick crashInfo = new ApplicationErrorReport.CrashInfo(tr); 1118cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationUptimeMillis = SystemClock.uptimeMillis(); 1119cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick this.policy = policy; 1120cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1121cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1122cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1123cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Create an instance of ViolationInfo initialized from a Parcel. 1124cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1125cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public ViolationInfo(Parcel in) { 1126cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick this(in, false); 1127cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1128cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1129cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1130cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Create an instance of ViolationInfo initialized from a Parcel. 1131cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * 1132cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * @param unsetGatheringBit if true, the caller is the root caller 1133cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * and the gathering penalty should be removed. 1134cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1135cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public ViolationInfo(Parcel in, boolean unsetGatheringBit) { 1136cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick crashInfo = new ApplicationErrorReport.CrashInfo(in); 1137cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick int rawPolicy = in.readInt(); 1138cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (unsetGatheringBit) { 1139cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick policy = rawPolicy & ~PENALTY_GATHER; 1140cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } else { 1141cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick policy = rawPolicy; 1142cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1143cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick durationMillis = in.readInt(); 1144cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationNumThisLoop = in.readInt(); 1145cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick violationUptimeMillis = in.readLong(); 1146cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1147cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1148cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1149cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Save a ViolationInfo instance to a parcel. 1150cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1151cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public void writeToParcel(Parcel dest, int flags) { 1152cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick crashInfo.writeToParcel(dest, flags); 1153cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick dest.writeInt(policy); 1154cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick dest.writeInt(durationMillis); 1155cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick dest.writeInt(violationNumThisLoop); 1156cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick dest.writeLong(violationUptimeMillis); 1157cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1158cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1159cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1160cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick /** 1161cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick * Dump a ViolationInfo instance to a Printer. 1162cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick */ 1163cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick public void dump(Printer pw, String prefix) { 1164cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick crashInfo.dump(pw, prefix); 1165cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick pw.println(prefix + "policy: " + policy); 1166cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (durationMillis != -1) { 1167cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick pw.println(prefix + "durationMillis: " + durationMillis); 1168cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1169cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick if (violationNumThisLoop != 0) { 1170cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick pw.println(prefix + "violationNumThisLoop: " + violationNumThisLoop); 1171cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1172cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick pw.println(prefix + "violationUptimeMillis: " + violationUptimeMillis); 1173cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1174cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick 1175cb9ceb1029036363a81952d8ed5dfcbc83e6ff72Brad Fitzpatrick } 1176438d0595121a7a2cdf19741e76e3c0e21a5c173dBrad Fitzpatrick} 1177