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