The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server; |
| 18 | |
| 19 | import com.android.server.am.ActivityManagerService; |
| 20 | |
| 21 | import android.app.AlarmManager; |
| 22 | import android.app.PendingIntent; |
| 23 | import android.content.BroadcastReceiver; |
| 24 | import android.content.ContentResolver; |
| 25 | import android.content.Context; |
| 26 | import android.content.Intent; |
| 27 | import android.content.IntentFilter; |
| 28 | import android.os.Debug; |
| 29 | import android.os.Handler; |
| 30 | import android.os.Message; |
| 31 | import android.os.Process; |
Suchi Amalapurapu | 6ffce2e | 2010-03-08 14:48:40 -0800 | [diff] [blame] | 32 | import android.os.ServiceManager; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 33 | import android.os.SystemClock; |
| 34 | import android.os.SystemProperties; |
| 35 | import android.provider.Settings; |
| 36 | import android.util.Config; |
| 37 | import android.util.EventLog; |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 38 | import android.util.Log; |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 39 | import android.util.Slog; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 40 | |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 41 | import java.io.File; |
Christopher Tate | ecaa7b4 | 2010-06-04 14:55:02 -0700 | [diff] [blame^] | 42 | import java.io.FileInputStream; |
| 43 | import java.io.FileOutputStream; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 44 | import java.io.IOException; |
| 45 | import java.util.ArrayList; |
| 46 | import java.util.Calendar; |
| 47 | |
| 48 | /** This class calls its monitor every minute. Killing this process if they don't return **/ |
| 49 | public class Watchdog extends Thread { |
| 50 | static final String TAG = "Watchdog"; |
| 51 | static final boolean localLOGV = false || Config.LOGV; |
| 52 | |
| 53 | // Set this to true to use debug default values. |
| 54 | static final boolean DB = false; |
| 55 | |
Christopher Tate | ecaa7b4 | 2010-06-04 14:55:02 -0700 | [diff] [blame^] | 56 | // Set this to true to have the watchdog record kernel thread stacks when it fires |
| 57 | static final boolean RECORD_KERNEL_THREADS = true; |
| 58 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 59 | static final int MONITOR = 2718; |
| 60 | static final int GLOBAL_PSS = 2719; |
| 61 | |
Christopher Tate | 6ee412d | 2010-05-28 12:01:56 -0700 | [diff] [blame] | 62 | static final int TIME_TO_RESTART = DB ? 15*1000 : 60*1000; |
| 63 | static final int TIME_TO_WAIT = TIME_TO_RESTART / 2; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 64 | |
| 65 | static final int MEMCHECK_DEFAULT_INTERVAL = DB ? 30 : 30*60; // 30 minutes |
| 66 | static final int MEMCHECK_DEFAULT_LOG_REALTIME_INTERVAL = DB ? 60 : 2*60*60; // 2 hours |
| 67 | static final int MEMCHECK_DEFAULT_SYSTEM_SOFT_THRESHOLD = (DB ? 10:16)*1024*1024; // 16MB |
| 68 | static final int MEMCHECK_DEFAULT_SYSTEM_HARD_THRESHOLD = (DB ? 14:20)*1024*1024; // 20MB |
| 69 | static final int MEMCHECK_DEFAULT_PHONE_SOFT_THRESHOLD = (DB ? 4:8)*1024*1024; // 8MB |
| 70 | static final int MEMCHECK_DEFAULT_PHONE_HARD_THRESHOLD = (DB ? 8:12)*1024*1024; // 12MB |
| 71 | |
| 72 | static final int MEMCHECK_DEFAULT_EXEC_START_TIME = 1*60*60; // 1:00am |
| 73 | static final int MEMCHECK_DEFAULT_EXEC_END_TIME = 5*60*60; // 5:00am |
| 74 | static final int MEMCHECK_DEFAULT_MIN_SCREEN_OFF = DB ? 1*60 : 5*60; // 5 minutes |
| 75 | static final int MEMCHECK_DEFAULT_MIN_ALARM = DB ? 1*60 : 3*60; // 3 minutes |
| 76 | static final int MEMCHECK_DEFAULT_RECHECK_INTERVAL = DB ? 1*60 : 5*60; // 5 minutes |
| 77 | |
| 78 | static final int REBOOT_DEFAULT_INTERVAL = DB ? 1 : 0; // never force reboot |
| 79 | static final int REBOOT_DEFAULT_START_TIME = 3*60*60; // 3:00am |
| 80 | static final int REBOOT_DEFAULT_WINDOW = 60*60; // within 1 hour |
| 81 | |
| 82 | static final String CHECKUP_ACTION = "com.android.service.Watchdog.CHECKUP"; |
| 83 | static final String REBOOT_ACTION = "com.android.service.Watchdog.REBOOT"; |
| 84 | |
| 85 | static Watchdog sWatchdog; |
| 86 | |
| 87 | /* This handler will be used to post message back onto the main thread */ |
| 88 | final Handler mHandler; |
| 89 | final Runnable mGlobalPssCollected; |
| 90 | final ArrayList<Monitor> mMonitors = new ArrayList<Monitor>(); |
| 91 | ContentResolver mResolver; |
| 92 | BatteryService mBattery; |
| 93 | PowerManagerService mPower; |
| 94 | AlarmManagerService mAlarm; |
| 95 | ActivityManagerService mActivity; |
| 96 | boolean mCompleted; |
| 97 | boolean mForceKillSystem; |
| 98 | Monitor mCurrentMonitor; |
| 99 | |
| 100 | PssRequestor mPhoneReq; |
| 101 | int mPhonePid; |
| 102 | int mPhonePss; |
| 103 | |
| 104 | long mLastMemCheckTime = -(MEMCHECK_DEFAULT_INTERVAL*1000); |
| 105 | boolean mHavePss; |
| 106 | long mLastMemCheckRealtime = -(MEMCHECK_DEFAULT_LOG_REALTIME_INTERVAL*1000); |
| 107 | boolean mHaveGlobalPss; |
| 108 | final MemMonitor mSystemMemMonitor = new MemMonitor("system", |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 109 | Settings.Secure.MEMCHECK_SYSTEM_ENABLED, |
| 110 | Settings.Secure.MEMCHECK_SYSTEM_SOFT_THRESHOLD, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 111 | MEMCHECK_DEFAULT_SYSTEM_SOFT_THRESHOLD, |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 112 | Settings.Secure.MEMCHECK_SYSTEM_HARD_THRESHOLD, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 113 | MEMCHECK_DEFAULT_SYSTEM_HARD_THRESHOLD); |
| 114 | final MemMonitor mPhoneMemMonitor = new MemMonitor("com.android.phone", |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 115 | Settings.Secure.MEMCHECK_PHONE_ENABLED, |
| 116 | Settings.Secure.MEMCHECK_PHONE_SOFT_THRESHOLD, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 117 | MEMCHECK_DEFAULT_PHONE_SOFT_THRESHOLD, |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 118 | Settings.Secure.MEMCHECK_PHONE_HARD_THRESHOLD, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 119 | MEMCHECK_DEFAULT_PHONE_HARD_THRESHOLD); |
| 120 | |
| 121 | final Calendar mCalendar = Calendar.getInstance(); |
| 122 | long mMemcheckLastTime; |
| 123 | long mMemcheckExecStartTime; |
| 124 | long mMemcheckExecEndTime; |
| 125 | int mMinScreenOff = MEMCHECK_DEFAULT_MIN_SCREEN_OFF; |
| 126 | int mMinAlarm = MEMCHECK_DEFAULT_MIN_ALARM; |
| 127 | boolean mNeedScheduledCheck; |
| 128 | PendingIntent mCheckupIntent; |
| 129 | PendingIntent mRebootIntent; |
| 130 | |
| 131 | long mBootTime; |
| 132 | int mRebootInterval; |
| 133 | |
| 134 | boolean mReqRebootNoWait; // should wait for one interval before reboot? |
| 135 | int mReqRebootInterval = -1; // >= 0 if a reboot has been requested |
| 136 | int mReqRebootStartTime = -1; // >= 0 if a specific start time has been requested |
| 137 | int mReqRebootWindow = -1; // >= 0 if a specific window has been requested |
| 138 | int mReqMinScreenOff = -1; // >= 0 if a specific screen off time has been requested |
| 139 | int mReqMinNextAlarm = -1; // >= 0 if specific time to next alarm has been requested |
| 140 | int mReqRecheckInterval= -1; // >= 0 if a specific recheck interval has been requested |
| 141 | |
| 142 | /** |
| 143 | * This class monitors the memory in a particular process. |
| 144 | */ |
| 145 | final class MemMonitor { |
| 146 | final String mProcessName; |
| 147 | final String mEnabledSetting; |
| 148 | final String mSoftSetting; |
| 149 | final String mHardSetting; |
| 150 | |
| 151 | int mSoftThreshold; |
| 152 | int mHardThreshold; |
| 153 | boolean mEnabled; |
| 154 | long mLastPss; |
| 155 | |
| 156 | static final int STATE_OK = 0; |
| 157 | static final int STATE_SOFT = 1; |
| 158 | static final int STATE_HARD = 2; |
| 159 | int mState; |
| 160 | |
| 161 | MemMonitor(String processName, String enabledSetting, |
| 162 | String softSetting, int defSoftThreshold, |
| 163 | String hardSetting, int defHardThreshold) { |
| 164 | mProcessName = processName; |
| 165 | mEnabledSetting = enabledSetting; |
| 166 | mSoftSetting = softSetting; |
| 167 | mHardSetting = hardSetting; |
| 168 | mSoftThreshold = defSoftThreshold; |
| 169 | mHardThreshold = defHardThreshold; |
| 170 | } |
| 171 | |
| 172 | void retrieveSettings(ContentResolver resolver) { |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 173 | mSoftThreshold = Settings.Secure.getInt( |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 174 | resolver, mSoftSetting, mSoftThreshold); |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 175 | mHardThreshold = Settings.Secure.getInt( |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 176 | resolver, mHardSetting, mHardThreshold); |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 177 | mEnabled = Settings.Secure.getInt( |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 178 | resolver, mEnabledSetting, 0) != 0; |
| 179 | } |
| 180 | |
| 181 | boolean checkLocked(long curTime, int pid, int pss) { |
| 182 | mLastPss = pss; |
| 183 | if (mLastPss < mSoftThreshold) { |
| 184 | mState = STATE_OK; |
| 185 | } else if (mLastPss < mHardThreshold) { |
| 186 | mState = STATE_SOFT; |
| 187 | } else { |
| 188 | mState = STATE_HARD; |
| 189 | } |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 190 | EventLog.writeEvent(EventLogTags.WATCHDOG_PROC_PSS, mProcessName, pid, mLastPss); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 191 | |
| 192 | if (mState == STATE_OK) { |
| 193 | // Memory is good, don't recover. |
| 194 | return false; |
| 195 | } |
| 196 | |
| 197 | if (mState == STATE_HARD) { |
| 198 | // Memory is really bad, kill right now. |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 199 | EventLog.writeEvent(EventLogTags.WATCHDOG_HARD_RESET, mProcessName, pid, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 200 | mHardThreshold, mLastPss); |
| 201 | return mEnabled; |
| 202 | } |
| 203 | |
| 204 | // It is time to schedule a reset... |
| 205 | // Check if we are currently within the time to kill processes due |
| 206 | // to memory use. |
| 207 | computeMemcheckTimesLocked(curTime); |
| 208 | String skipReason = null; |
| 209 | if (curTime < mMemcheckExecStartTime || curTime > mMemcheckExecEndTime) { |
| 210 | skipReason = "time"; |
| 211 | } else { |
| 212 | skipReason = shouldWeBeBrutalLocked(curTime); |
| 213 | } |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 214 | EventLog.writeEvent(EventLogTags.WATCHDOG_SOFT_RESET, mProcessName, pid, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 215 | mSoftThreshold, mLastPss, skipReason != null ? skipReason : ""); |
| 216 | if (skipReason != null) { |
| 217 | mNeedScheduledCheck = true; |
| 218 | return false; |
| 219 | } |
| 220 | return mEnabled; |
| 221 | } |
| 222 | |
| 223 | void clear() { |
| 224 | mLastPss = 0; |
| 225 | mState = STATE_OK; |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * Used for scheduling monitor callbacks and checking memory usage. |
| 231 | */ |
| 232 | final class HeartbeatHandler extends Handler { |
| 233 | @Override |
| 234 | public void handleMessage(Message msg) { |
| 235 | switch (msg.what) { |
| 236 | case GLOBAL_PSS: { |
| 237 | if (mHaveGlobalPss) { |
| 238 | // During the last pass we collected pss information, so |
| 239 | // now it is time to report it. |
| 240 | mHaveGlobalPss = false; |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 241 | if (localLOGV) Slog.v(TAG, "Received global pss, logging."); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 242 | logGlobalMemory(); |
| 243 | } |
| 244 | } break; |
| 245 | |
| 246 | case MONITOR: { |
| 247 | if (mHavePss) { |
| 248 | // During the last pass we collected pss information, so |
| 249 | // now it is time to report it. |
| 250 | mHavePss = false; |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 251 | if (localLOGV) Slog.v(TAG, "Have pss, checking memory."); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 252 | checkMemory(); |
| 253 | } |
| 254 | |
| 255 | if (mHaveGlobalPss) { |
| 256 | // During the last pass we collected pss information, so |
| 257 | // now it is time to report it. |
| 258 | mHaveGlobalPss = false; |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 259 | if (localLOGV) Slog.v(TAG, "Have global pss, logging."); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 260 | logGlobalMemory(); |
| 261 | } |
| 262 | |
| 263 | long now = SystemClock.uptimeMillis(); |
| 264 | |
| 265 | // See if we should force a reboot. |
| 266 | int rebootInterval = mReqRebootInterval >= 0 |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 267 | ? mReqRebootInterval : Settings.Secure.getInt( |
| 268 | mResolver, Settings.Secure.REBOOT_INTERVAL, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 269 | REBOOT_DEFAULT_INTERVAL); |
| 270 | if (mRebootInterval != rebootInterval) { |
| 271 | mRebootInterval = rebootInterval; |
| 272 | // We have been running long enough that a reboot can |
| 273 | // be considered... |
| 274 | checkReboot(false); |
| 275 | } |
| 276 | |
| 277 | // See if we should check memory conditions. |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 278 | long memCheckInterval = Settings.Secure.getLong( |
| 279 | mResolver, Settings.Secure.MEMCHECK_INTERVAL, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 280 | MEMCHECK_DEFAULT_INTERVAL) * 1000; |
| 281 | if ((mLastMemCheckTime+memCheckInterval) < now) { |
| 282 | // It is now time to collect pss information. This |
| 283 | // is async so we won't report it now. And to keep |
| 284 | // things simple, we will assume that everyone has |
| 285 | // reported back by the next MONITOR message. |
| 286 | mLastMemCheckTime = now; |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 287 | if (localLOGV) Slog.v(TAG, "Collecting memory usage."); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 288 | collectMemory(); |
| 289 | mHavePss = true; |
| 290 | |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 291 | long memCheckRealtimeInterval = Settings.Secure.getLong( |
| 292 | mResolver, Settings.Secure.MEMCHECK_LOG_REALTIME_INTERVAL, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 293 | MEMCHECK_DEFAULT_LOG_REALTIME_INTERVAL) * 1000; |
| 294 | long realtimeNow = SystemClock.elapsedRealtime(); |
| 295 | if ((mLastMemCheckRealtime+memCheckRealtimeInterval) < realtimeNow) { |
| 296 | mLastMemCheckRealtime = realtimeNow; |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 297 | if (localLOGV) Slog.v(TAG, "Collecting global memory usage."); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 298 | collectGlobalMemory(); |
| 299 | mHaveGlobalPss = true; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | final int size = mMonitors.size(); |
| 304 | for (int i = 0 ; i < size ; i++) { |
| 305 | mCurrentMonitor = mMonitors.get(i); |
| 306 | mCurrentMonitor.monitor(); |
| 307 | } |
| 308 | |
| 309 | synchronized (Watchdog.this) { |
| 310 | mCompleted = true; |
| 311 | mCurrentMonitor = null; |
| 312 | } |
| 313 | } break; |
| 314 | } |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | final class GlobalPssCollected implements Runnable { |
| 319 | public void run() { |
| 320 | mHandler.sendEmptyMessage(GLOBAL_PSS); |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | final class CheckupReceiver extends BroadcastReceiver { |
| 325 | @Override |
| 326 | public void onReceive(Context c, Intent intent) { |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 327 | if (localLOGV) Slog.v(TAG, "Alarm went off, checking memory."); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 328 | checkMemory(); |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | final class RebootReceiver extends BroadcastReceiver { |
| 333 | @Override |
| 334 | public void onReceive(Context c, Intent intent) { |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 335 | if (localLOGV) Slog.v(TAG, "Alarm went off, checking reboot."); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 336 | checkReboot(true); |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | final class RebootRequestReceiver extends BroadcastReceiver { |
| 341 | @Override |
| 342 | public void onReceive(Context c, Intent intent) { |
| 343 | mReqRebootNoWait = intent.getIntExtra("nowait", 0) != 0; |
| 344 | mReqRebootInterval = intent.getIntExtra("interval", -1); |
| 345 | mReqRebootStartTime = intent.getIntExtra("startTime", -1); |
| 346 | mReqRebootWindow = intent.getIntExtra("window", -1); |
| 347 | mReqMinScreenOff = intent.getIntExtra("minScreenOff", -1); |
| 348 | mReqMinNextAlarm = intent.getIntExtra("minNextAlarm", -1); |
| 349 | mReqRecheckInterval = intent.getIntExtra("recheckInterval", -1); |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 350 | EventLog.writeEvent(EventLogTags.WATCHDOG_REQUESTED_REBOOT, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 351 | mReqRebootNoWait ? 1 : 0, mReqRebootInterval, |
| 352 | mReqRecheckInterval, mReqRebootStartTime, |
| 353 | mReqRebootWindow, mReqMinScreenOff, mReqMinNextAlarm); |
| 354 | checkReboot(true); |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | public interface Monitor { |
| 359 | void monitor(); |
| 360 | } |
| 361 | |
| 362 | public interface PssRequestor { |
| 363 | void requestPss(); |
| 364 | } |
| 365 | |
| 366 | public class PssStats { |
| 367 | public int mEmptyPss; |
| 368 | public int mEmptyCount; |
| 369 | public int mBackgroundPss; |
| 370 | public int mBackgroundCount; |
| 371 | public int mServicePss; |
| 372 | public int mServiceCount; |
| 373 | public int mVisiblePss; |
| 374 | public int mVisibleCount; |
| 375 | public int mForegroundPss; |
| 376 | public int mForegroundCount; |
| 377 | |
| 378 | public int mNoPssCount; |
| 379 | |
| 380 | public int mProcDeaths[] = new int[10]; |
| 381 | } |
| 382 | |
| 383 | public static Watchdog getInstance() { |
| 384 | if (sWatchdog == null) { |
| 385 | sWatchdog = new Watchdog(); |
| 386 | } |
| 387 | |
| 388 | return sWatchdog; |
| 389 | } |
| 390 | |
| 391 | private Watchdog() { |
| 392 | super("watchdog"); |
| 393 | mHandler = new HeartbeatHandler(); |
| 394 | mGlobalPssCollected = new GlobalPssCollected(); |
| 395 | } |
| 396 | |
| 397 | public void init(Context context, BatteryService battery, |
| 398 | PowerManagerService power, AlarmManagerService alarm, |
| 399 | ActivityManagerService activity) { |
| 400 | mResolver = context.getContentResolver(); |
| 401 | mBattery = battery; |
| 402 | mPower = power; |
| 403 | mAlarm = alarm; |
| 404 | mActivity = activity; |
| 405 | |
| 406 | context.registerReceiver(new CheckupReceiver(), |
| 407 | new IntentFilter(CHECKUP_ACTION)); |
| 408 | mCheckupIntent = PendingIntent.getBroadcast(context, |
| 409 | 0, new Intent(CHECKUP_ACTION), 0); |
| 410 | |
| 411 | context.registerReceiver(new RebootReceiver(), |
| 412 | new IntentFilter(REBOOT_ACTION)); |
| 413 | mRebootIntent = PendingIntent.getBroadcast(context, |
| 414 | 0, new Intent(REBOOT_ACTION), 0); |
| 415 | |
| 416 | context.registerReceiver(new RebootRequestReceiver(), |
| 417 | new IntentFilter(Intent.ACTION_REBOOT), |
| 418 | android.Manifest.permission.REBOOT, null); |
| 419 | |
| 420 | mBootTime = System.currentTimeMillis(); |
| 421 | } |
| 422 | |
| 423 | public void processStarted(PssRequestor req, String name, int pid) { |
| 424 | synchronized (this) { |
| 425 | if ("com.android.phone".equals(name)) { |
| 426 | mPhoneReq = req; |
| 427 | mPhonePid = pid; |
| 428 | mPhonePss = 0; |
| 429 | } |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | public void reportPss(PssRequestor req, String name, int pss) { |
| 434 | synchronized (this) { |
| 435 | if (mPhoneReq == req) { |
| 436 | mPhonePss = pss; |
| 437 | } |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | public void addMonitor(Monitor monitor) { |
| 442 | synchronized (this) { |
| 443 | if (isAlive()) { |
| 444 | throw new RuntimeException("Monitors can't be added while the Watchdog is running"); |
| 445 | } |
| 446 | mMonitors.add(monitor); |
| 447 | } |
| 448 | } |
| 449 | |
| 450 | /** |
| 451 | * Retrieve memory usage information from specific processes being |
| 452 | * monitored. This is an async operation, so must be done before doing |
| 453 | * memory checks. |
| 454 | */ |
| 455 | void collectMemory() { |
| 456 | synchronized (this) { |
| 457 | if (mPhoneReq != null) { |
| 458 | mPhoneReq.requestPss(); |
| 459 | } |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | /** |
| 464 | * Retrieve memory usage over all application processes. This is an |
| 465 | * async operation, so must be done before doing memory checks. |
| 466 | */ |
| 467 | void collectGlobalMemory() { |
| 468 | mActivity.requestPss(mGlobalPssCollected); |
| 469 | } |
| 470 | |
| 471 | /** |
| 472 | * Check memory usage in the system, scheduling kills/reboots as needed. |
| 473 | * This always runs on the mHandler thread. |
| 474 | */ |
| 475 | void checkMemory() { |
| 476 | boolean needScheduledCheck; |
| 477 | long curTime; |
| 478 | long nextTime = 0; |
| 479 | |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 480 | long recheckInterval = Settings.Secure.getLong( |
| 481 | mResolver, Settings.Secure.MEMCHECK_RECHECK_INTERVAL, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 482 | MEMCHECK_DEFAULT_RECHECK_INTERVAL) * 1000; |
| 483 | |
| 484 | mSystemMemMonitor.retrieveSettings(mResolver); |
| 485 | mPhoneMemMonitor.retrieveSettings(mResolver); |
| 486 | retrieveBrutalityAmount(); |
| 487 | |
| 488 | synchronized (this) { |
| 489 | curTime = System.currentTimeMillis(); |
| 490 | mNeedScheduledCheck = false; |
| 491 | |
| 492 | // How is the system doing? |
| 493 | if (mSystemMemMonitor.checkLocked(curTime, Process.myPid(), |
| 494 | (int)Process.getPss(Process.myPid()))) { |
| 495 | // Not good! Time to suicide. |
| 496 | mForceKillSystem = true; |
| 497 | notifyAll(); |
| 498 | return; |
| 499 | } |
| 500 | |
| 501 | // How is the phone process doing? |
| 502 | if (mPhoneReq != null) { |
| 503 | if (mPhoneMemMonitor.checkLocked(curTime, mPhonePid, |
| 504 | mPhonePss)) { |
| 505 | // Just kill the phone process and let it restart. |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 506 | Slog.i(TAG, "Watchdog is killing the phone process"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 507 | Process.killProcess(mPhonePid); |
| 508 | } |
| 509 | } else { |
| 510 | mPhoneMemMonitor.clear(); |
| 511 | } |
| 512 | |
| 513 | needScheduledCheck = mNeedScheduledCheck; |
| 514 | if (needScheduledCheck) { |
| 515 | // Something is going bad, but now is not a good time to |
| 516 | // tear things down... schedule an alarm to check again soon. |
| 517 | nextTime = curTime + recheckInterval; |
| 518 | if (nextTime < mMemcheckExecStartTime) { |
| 519 | nextTime = mMemcheckExecStartTime; |
| 520 | } else if (nextTime >= mMemcheckExecEndTime){ |
| 521 | // Need to check during next exec time... so that needs |
| 522 | // to be computed. |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 523 | if (localLOGV) Slog.v(TAG, "Computing next time range"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 524 | computeMemcheckTimesLocked(nextTime); |
| 525 | nextTime = mMemcheckExecStartTime; |
| 526 | } |
| 527 | |
| 528 | if (localLOGV) { |
| 529 | mCalendar.setTimeInMillis(nextTime); |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 530 | Slog.v(TAG, "Next Alarm Time: " + mCalendar); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 531 | } |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | if (needScheduledCheck) { |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 536 | if (localLOGV) Slog.v(TAG, "Scheduling next memcheck alarm for " |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 537 | + ((nextTime-curTime)/1000/60) + "m from now"); |
| 538 | mAlarm.remove(mCheckupIntent); |
| 539 | mAlarm.set(AlarmManager.RTC_WAKEUP, nextTime, mCheckupIntent); |
| 540 | } else { |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 541 | if (localLOGV) Slog.v(TAG, "No need to schedule a memcheck alarm!"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 542 | mAlarm.remove(mCheckupIntent); |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | final PssStats mPssStats = new PssStats(); |
| 547 | final String[] mMemInfoFields = new String[] { |
| 548 | "MemFree:", "Buffers:", "Cached:", |
| 549 | "Active:", "Inactive:", |
| 550 | "AnonPages:", "Mapped:", "Slab:", |
| 551 | "SReclaimable:", "SUnreclaim:", "PageTables:" }; |
| 552 | final long[] mMemInfoSizes = new long[mMemInfoFields.length]; |
| 553 | final String[] mVMStatFields = new String[] { |
| 554 | "pgfree ", "pgactivate ", "pgdeactivate ", |
| 555 | "pgfault ", "pgmajfault " }; |
| 556 | final long[] mVMStatSizes = new long[mVMStatFields.length]; |
| 557 | final long[] mPrevVMStatSizes = new long[mVMStatFields.length]; |
| 558 | long mLastLogGlobalMemoryTime; |
| 559 | |
| 560 | void logGlobalMemory() { |
| 561 | PssStats stats = mPssStats; |
| 562 | mActivity.collectPss(stats); |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 563 | EventLog.writeEvent(EventLogTags.WATCHDOG_PSS_STATS, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 564 | stats.mEmptyPss, stats.mEmptyCount, |
| 565 | stats.mBackgroundPss, stats.mBackgroundCount, |
| 566 | stats.mServicePss, stats.mServiceCount, |
| 567 | stats.mVisiblePss, stats.mVisibleCount, |
| 568 | stats.mForegroundPss, stats.mForegroundCount, |
| 569 | stats.mNoPssCount); |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 570 | EventLog.writeEvent(EventLogTags.WATCHDOG_PROC_STATS, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 571 | stats.mProcDeaths[0], stats.mProcDeaths[1], stats.mProcDeaths[2], |
| 572 | stats.mProcDeaths[3], stats.mProcDeaths[4]); |
| 573 | Process.readProcLines("/proc/meminfo", mMemInfoFields, mMemInfoSizes); |
| 574 | for (int i=0; i<mMemInfoSizes.length; i++) { |
| 575 | mMemInfoSizes[i] *= 1024; |
| 576 | } |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 577 | EventLog.writeEvent(EventLogTags.WATCHDOG_MEMINFO, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 578 | (int)mMemInfoSizes[0], (int)mMemInfoSizes[1], (int)mMemInfoSizes[2], |
| 579 | (int)mMemInfoSizes[3], (int)mMemInfoSizes[4], |
| 580 | (int)mMemInfoSizes[5], (int)mMemInfoSizes[6], (int)mMemInfoSizes[7], |
| 581 | (int)mMemInfoSizes[8], (int)mMemInfoSizes[9], (int)mMemInfoSizes[10]); |
| 582 | long now = SystemClock.uptimeMillis(); |
| 583 | long dur = now - mLastLogGlobalMemoryTime; |
| 584 | mLastLogGlobalMemoryTime = now; |
| 585 | Process.readProcLines("/proc/vmstat", mVMStatFields, mVMStatSizes); |
| 586 | for (int i=0; i<mVMStatSizes.length; i++) { |
| 587 | long v = mVMStatSizes[i]; |
| 588 | mVMStatSizes[i] -= mPrevVMStatSizes[i]; |
| 589 | mPrevVMStatSizes[i] = v; |
| 590 | } |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 591 | EventLog.writeEvent(EventLogTags.WATCHDOG_VMSTAT, dur, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 592 | (int)mVMStatSizes[0], (int)mVMStatSizes[1], (int)mVMStatSizes[2], |
| 593 | (int)mVMStatSizes[3], (int)mVMStatSizes[4]); |
| 594 | } |
| 595 | |
| 596 | void checkReboot(boolean fromAlarm) { |
| 597 | int rebootInterval = mReqRebootInterval >= 0 ? mReqRebootInterval |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 598 | : Settings.Secure.getInt( |
| 599 | mResolver, Settings.Secure.REBOOT_INTERVAL, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 600 | REBOOT_DEFAULT_INTERVAL); |
| 601 | mRebootInterval = rebootInterval; |
| 602 | if (rebootInterval <= 0) { |
| 603 | // No reboot interval requested. |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 604 | if (localLOGV) Slog.v(TAG, "No need to schedule a reboot alarm!"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 605 | mAlarm.remove(mRebootIntent); |
| 606 | return; |
| 607 | } |
| 608 | |
| 609 | long rebootStartTime = mReqRebootStartTime >= 0 ? mReqRebootStartTime |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 610 | : Settings.Secure.getLong( |
| 611 | mResolver, Settings.Secure.REBOOT_START_TIME, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 612 | REBOOT_DEFAULT_START_TIME); |
| 613 | long rebootWindowMillis = (mReqRebootWindow >= 0 ? mReqRebootWindow |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 614 | : Settings.Secure.getLong( |
| 615 | mResolver, Settings.Secure.REBOOT_WINDOW, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 616 | REBOOT_DEFAULT_WINDOW)) * 1000; |
| 617 | long recheckInterval = (mReqRecheckInterval >= 0 ? mReqRecheckInterval |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 618 | : Settings.Secure.getLong( |
| 619 | mResolver, Settings.Secure.MEMCHECK_RECHECK_INTERVAL, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 620 | MEMCHECK_DEFAULT_RECHECK_INTERVAL)) * 1000; |
| 621 | |
| 622 | retrieveBrutalityAmount(); |
| 623 | |
| 624 | long realStartTime; |
| 625 | long now; |
| 626 | |
| 627 | synchronized (this) { |
| 628 | now = System.currentTimeMillis(); |
| 629 | realStartTime = computeCalendarTime(mCalendar, now, |
| 630 | rebootStartTime); |
| 631 | |
| 632 | long rebootIntervalMillis = rebootInterval*24*60*60*1000; |
| 633 | if (DB || mReqRebootNoWait || |
| 634 | (now-mBootTime) >= (rebootIntervalMillis-rebootWindowMillis)) { |
| 635 | if (fromAlarm && rebootWindowMillis <= 0) { |
| 636 | // No reboot window -- just immediately reboot. |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 637 | EventLog.writeEvent(EventLogTags.WATCHDOG_SCHEDULED_REBOOT, now, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 638 | (int)rebootIntervalMillis, (int)rebootStartTime*1000, |
| 639 | (int)rebootWindowMillis, ""); |
| 640 | rebootSystem("Checkin scheduled forced"); |
| 641 | return; |
| 642 | } |
| 643 | |
| 644 | // Are we within the reboot window? |
| 645 | if (now < realStartTime) { |
| 646 | // Schedule alarm for next check interval. |
| 647 | realStartTime = computeCalendarTime(mCalendar, |
| 648 | now, rebootStartTime); |
| 649 | } else if (now < (realStartTime+rebootWindowMillis)) { |
| 650 | String doit = shouldWeBeBrutalLocked(now); |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 651 | EventLog.writeEvent(EventLogTags.WATCHDOG_SCHEDULED_REBOOT, now, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 652 | (int)rebootInterval, (int)rebootStartTime*1000, |
| 653 | (int)rebootWindowMillis, doit != null ? doit : ""); |
| 654 | if (doit == null) { |
| 655 | rebootSystem("Checked scheduled range"); |
| 656 | return; |
| 657 | } |
| 658 | |
| 659 | // Schedule next alarm either within the window or in the |
| 660 | // next interval. |
| 661 | if ((now+recheckInterval) >= (realStartTime+rebootWindowMillis)) { |
| 662 | realStartTime = computeCalendarTime(mCalendar, |
| 663 | now + rebootIntervalMillis, rebootStartTime); |
| 664 | } else { |
| 665 | realStartTime = now + recheckInterval; |
| 666 | } |
| 667 | } else { |
| 668 | // Schedule alarm for next check interval. |
| 669 | realStartTime = computeCalendarTime(mCalendar, |
| 670 | now + rebootIntervalMillis, rebootStartTime); |
| 671 | } |
| 672 | } |
| 673 | } |
| 674 | |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 675 | if (localLOGV) Slog.v(TAG, "Scheduling next reboot alarm for " |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 676 | + ((realStartTime-now)/1000/60) + "m from now"); |
| 677 | mAlarm.remove(mRebootIntent); |
| 678 | mAlarm.set(AlarmManager.RTC_WAKEUP, realStartTime, mRebootIntent); |
| 679 | } |
| 680 | |
| 681 | /** |
| 682 | * Perform a full reboot of the system. |
| 683 | */ |
| 684 | void rebootSystem(String reason) { |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 685 | Slog.i(TAG, "Rebooting system because: " + reason); |
Suchi Amalapurapu | 6ffce2e | 2010-03-08 14:48:40 -0800 | [diff] [blame] | 686 | PowerManagerService pms = (PowerManagerService) ServiceManager.getService("power"); |
| 687 | pms.reboot(reason); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | /** |
| 691 | * Load the current Gservices settings for when |
| 692 | * {@link #shouldWeBeBrutalLocked} will allow the brutality to happen. |
| 693 | * Must not be called with the lock held. |
| 694 | */ |
| 695 | void retrieveBrutalityAmount() { |
| 696 | mMinScreenOff = (mReqMinScreenOff >= 0 ? mReqMinScreenOff |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 697 | : Settings.Secure.getInt( |
| 698 | mResolver, Settings.Secure.MEMCHECK_MIN_SCREEN_OFF, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 699 | MEMCHECK_DEFAULT_MIN_SCREEN_OFF)) * 1000; |
| 700 | mMinAlarm = (mReqMinNextAlarm >= 0 ? mReqMinNextAlarm |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 701 | : Settings.Secure.getInt( |
| 702 | mResolver, Settings.Secure.MEMCHECK_MIN_ALARM, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 703 | MEMCHECK_DEFAULT_MIN_ALARM)) * 1000; |
| 704 | } |
| 705 | |
| 706 | /** |
| 707 | * Determine whether it is a good time to kill, crash, or otherwise |
| 708 | * plunder the current situation for the overall long-term benefit of |
| 709 | * the world. |
| 710 | * |
| 711 | * @param curTime The current system time. |
| 712 | * @return Returns null if this is a good time, else a String with the |
| 713 | * text of why it is not a good time. |
| 714 | */ |
| 715 | String shouldWeBeBrutalLocked(long curTime) { |
| 716 | if (mBattery == null || !mBattery.isPowered()) { |
| 717 | return "battery"; |
| 718 | } |
| 719 | |
| 720 | if (mMinScreenOff >= 0 && (mPower == null || |
| 721 | mPower.timeSinceScreenOn() < mMinScreenOff)) { |
| 722 | return "screen"; |
| 723 | } |
| 724 | |
| 725 | if (mMinAlarm >= 0 && (mAlarm == null || |
| 726 | mAlarm.timeToNextAlarm() < mMinAlarm)) { |
| 727 | return "alarm"; |
| 728 | } |
| 729 | |
| 730 | return null; |
| 731 | } |
| 732 | |
| 733 | /** |
| 734 | * Compute the times during which we next would like to perform process |
| 735 | * restarts. |
| 736 | * |
| 737 | * @param curTime The current system time. |
| 738 | */ |
| 739 | void computeMemcheckTimesLocked(long curTime) { |
| 740 | if (mMemcheckLastTime == curTime) { |
| 741 | return; |
| 742 | } |
| 743 | |
| 744 | mMemcheckLastTime = curTime; |
| 745 | |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 746 | long memcheckExecStartTime = Settings.Secure.getLong( |
| 747 | mResolver, Settings.Secure.MEMCHECK_EXEC_START_TIME, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 748 | MEMCHECK_DEFAULT_EXEC_START_TIME); |
Doug Zongker | f688889 | 2010-01-06 16:38:14 -0800 | [diff] [blame] | 749 | long memcheckExecEndTime = Settings.Secure.getLong( |
| 750 | mResolver, Settings.Secure.MEMCHECK_EXEC_END_TIME, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 751 | MEMCHECK_DEFAULT_EXEC_END_TIME); |
| 752 | |
| 753 | mMemcheckExecEndTime = computeCalendarTime(mCalendar, curTime, |
| 754 | memcheckExecEndTime); |
| 755 | if (mMemcheckExecEndTime < curTime) { |
| 756 | memcheckExecStartTime += 24*60*60; |
| 757 | memcheckExecEndTime += 24*60*60; |
| 758 | mMemcheckExecEndTime = computeCalendarTime(mCalendar, curTime, |
| 759 | memcheckExecEndTime); |
| 760 | } |
| 761 | mMemcheckExecStartTime = computeCalendarTime(mCalendar, curTime, |
| 762 | memcheckExecStartTime); |
| 763 | |
| 764 | if (localLOGV) { |
| 765 | mCalendar.setTimeInMillis(curTime); |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 766 | Slog.v(TAG, "Current Time: " + mCalendar); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 767 | mCalendar.setTimeInMillis(mMemcheckExecStartTime); |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 768 | Slog.v(TAG, "Start Check Time: " + mCalendar); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 769 | mCalendar.setTimeInMillis(mMemcheckExecEndTime); |
Joe Onorato | 8a9b220 | 2010-02-26 18:56:32 -0800 | [diff] [blame] | 770 | Slog.v(TAG, "End Check Time: " + mCalendar); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 771 | } |
| 772 | } |
| 773 | |
| 774 | static long computeCalendarTime(Calendar c, long curTime, |
| 775 | long secondsSinceMidnight) { |
| 776 | |
| 777 | // start with now |
| 778 | c.setTimeInMillis(curTime); |
| 779 | |
| 780 | int val = (int)secondsSinceMidnight / (60*60); |
| 781 | c.set(Calendar.HOUR_OF_DAY, val); |
| 782 | secondsSinceMidnight -= val * (60*60); |
| 783 | val = (int)secondsSinceMidnight / 60; |
| 784 | c.set(Calendar.MINUTE, val); |
| 785 | c.set(Calendar.SECOND, (int)secondsSinceMidnight - (val*60)); |
| 786 | c.set(Calendar.MILLISECOND, 0); |
| 787 | |
| 788 | long newTime = c.getTimeInMillis(); |
| 789 | if (newTime < curTime) { |
| 790 | // The given time (in seconds since midnight) has already passed for today, so advance |
| 791 | // by one day (due to daylight savings, etc., the delta may differ from 24 hours). |
| 792 | c.add(Calendar.DAY_OF_MONTH, 1); |
| 793 | newTime = c.getTimeInMillis(); |
| 794 | } |
| 795 | |
| 796 | return newTime; |
| 797 | } |
| 798 | |
| 799 | @Override |
| 800 | public void run() { |
Christopher Tate | 6ee412d | 2010-05-28 12:01:56 -0700 | [diff] [blame] | 801 | boolean waitedHalf = false; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 802 | while (true) { |
| 803 | mCompleted = false; |
| 804 | mHandler.sendEmptyMessage(MONITOR); |
| 805 | |
| 806 | synchronized (this) { |
| 807 | long timeout = TIME_TO_WAIT; |
| 808 | |
| 809 | // NOTE: We use uptimeMillis() here because we do not want to increment the time we |
| 810 | // wait while asleep. If the device is asleep then the thing that we are waiting |
Christopher Tate | 6ee412d | 2010-05-28 12:01:56 -0700 | [diff] [blame] | 811 | // to timeout on is asleep as well and won't have a chance to run, causing a false |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 812 | // positive on when to kill things. |
| 813 | long start = SystemClock.uptimeMillis(); |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 814 | while (timeout > 0 && !mForceKillSystem) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 815 | try { |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 816 | wait(timeout); // notifyAll() is called when mForceKillSystem is set |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 817 | } catch (InterruptedException e) { |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 818 | Log.wtf(TAG, e); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 819 | } |
| 820 | timeout = TIME_TO_WAIT - (SystemClock.uptimeMillis() - start); |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 821 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 822 | |
| 823 | if (mCompleted && !mForceKillSystem) { |
| 824 | // The monitors have returned. |
Christopher Tate | 6ee412d | 2010-05-28 12:01:56 -0700 | [diff] [blame] | 825 | waitedHalf = false; |
| 826 | continue; |
| 827 | } |
| 828 | |
| 829 | if (!waitedHalf) { |
| 830 | // We've waited half the deadlock-detection interval. Pull a stack |
| 831 | // trace and wait another half. |
| 832 | ArrayList pids = new ArrayList(); |
| 833 | pids.add(Process.myPid()); |
| 834 | File stack = ActivityManagerService.dumpStackTraces(true, pids); |
| 835 | waitedHalf = true; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 836 | continue; |
| 837 | } |
| 838 | } |
| 839 | |
| 840 | // If we got here, that means that the system is most likely hung. |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 841 | // First collect stack traces from all threads of the system process. |
| 842 | // Then kill this process so that the system will restart. |
| 843 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 844 | String name = (mCurrentMonitor != null) ? mCurrentMonitor.getClass().getName() : "null"; |
Doug Zongker | ab5c49c | 2009-12-04 10:31:43 -0800 | [diff] [blame] | 845 | EventLog.writeEvent(EventLogTags.WATCHDOG, name); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 846 | |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 847 | ArrayList pids = new ArrayList(); |
| 848 | pids.add(Process.myPid()); |
Dan Egnor | 4bded07 | 2010-03-11 22:00:47 -0800 | [diff] [blame] | 849 | if (mPhonePid > 0) pids.add(mPhonePid); |
Christopher Tate | 6ee412d | 2010-05-28 12:01:56 -0700 | [diff] [blame] | 850 | // Pass !waitedHalf so that just in case we somehow wind up here without having |
| 851 | // dumped the halfway stacks, we properly re-initialize the trace file. |
| 852 | File stack = ActivityManagerService.dumpStackTraces(!waitedHalf, pids); |
Dan Egnor | 4bded07 | 2010-03-11 22:00:47 -0800 | [diff] [blame] | 853 | |
| 854 | // Give some extra time to make sure the stack traces get written. |
| 855 | // The system's been hanging for a minute, another second or two won't hurt much. |
| 856 | SystemClock.sleep(2000); |
| 857 | |
Christopher Tate | ecaa7b4 | 2010-06-04 14:55:02 -0700 | [diff] [blame^] | 858 | // Pull our own kernel thread stacks as well if we're configured for that |
| 859 | if (RECORD_KERNEL_THREADS) { |
| 860 | dumpKernelStackTraces(); |
| 861 | } |
| 862 | |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 863 | mActivity.addErrorToDropBox("watchdog", null, null, null, name, null, stack, null); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 864 | |
| 865 | // Only kill the process if the debugger is not attached. |
| 866 | if (!Debug.isDebuggerConnected()) { |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 867 | Slog.w(TAG, "*** WATCHDOG KILLING SYSTEM PROCESS: " + name); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 868 | Process.killProcess(Process.myPid()); |
Dan Egnor | 9bdc94b | 2010-03-04 14:20:31 -0800 | [diff] [blame] | 869 | System.exit(10); |
| 870 | } else { |
| 871 | Slog.w(TAG, "Debugger connected: Watchdog is *not* killing the system process"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 872 | } |
Christopher Tate | 6ee412d | 2010-05-28 12:01:56 -0700 | [diff] [blame] | 873 | |
| 874 | waitedHalf = false; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 875 | } |
| 876 | } |
Christopher Tate | ecaa7b4 | 2010-06-04 14:55:02 -0700 | [diff] [blame^] | 877 | |
| 878 | private File dumpKernelStackTraces() { |
| 879 | String tracesPath = SystemProperties.get("dalvik.vm.stack-trace-file", null); |
| 880 | if (tracesPath == null || tracesPath.length() == 0) { |
| 881 | return null; |
| 882 | } |
| 883 | |
| 884 | native_dumpKernelStacks(tracesPath); |
| 885 | return new File(tracesPath); |
| 886 | } |
| 887 | |
| 888 | private native void native_dumpKernelStacks(String tracesPath); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 889 | } |