1 /* 2 * Copyright (C) 2014 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.job; 18 19 import android.app.ActivityManager; 20 import android.app.job.JobParameters; 21 import android.app.job.IJobCallback; 22 import android.app.job.IJobService; 23 import android.content.ComponentName; 24 import android.content.Context; 25 import android.content.Intent; 26 import android.content.ServiceConnection; 27 import android.content.pm.PackageManager; 28 import android.net.Uri; 29 import android.os.Binder; 30 import android.os.Handler; 31 import android.os.IBinder; 32 import android.os.Looper; 33 import android.os.Message; 34 import android.os.PowerManager; 35 import android.os.RemoteException; 36 import android.os.SystemClock; 37 import android.os.UserHandle; 38 import android.os.WorkSource; 39 import android.util.Slog; 40 41 import com.android.internal.annotations.GuardedBy; 42 import com.android.internal.annotations.VisibleForTesting; 43 import com.android.internal.app.IBatteryStats; 44 import com.android.server.job.controllers.JobStatus; 45 46 import java.util.concurrent.atomic.AtomicBoolean; 47 48 /** 49 * Handles client binding and lifecycle of a job. Jobs execute one at a time on an instance of this 50 * class. 51 * 52 * There are two important interactions into this class from the 53 * {@link com.android.server.job.JobSchedulerService}. To execute a job and to cancel a job. 54 * - Execution of a new job is handled by the {@link #mAvailable}. This bit is flipped once when a 55 * job lands, and again when it is complete. 56 * - Cancelling is trickier, because there are also interactions from the client. It's possible 57 * the {@link com.android.server.job.JobServiceContext.JobServiceHandler} tries to process a 58 * {@link #MSG_CANCEL} after the client has already finished. This is handled by having 59 * {@link com.android.server.job.JobServiceContext.JobServiceHandler#handleCancelH} check whether 60 * the context is still valid. 61 * To mitigate this, tearing down the context removes all messages from the handler, including any 62 * tardy {@link #MSG_CANCEL}s. Additionally, we avoid sending duplicate onStopJob() 63 * calls to the client after they've specified jobFinished(). 64 */ 65 public class JobServiceContext extends IJobCallback.Stub implements ServiceConnection { 66 private static final boolean DEBUG = JobSchedulerService.DEBUG; 67 private static final String TAG = "JobServiceContext"; 68 /** Define the maximum # of jobs allowed to run on a service at once. */ 69 private static final int defaultMaxActiveJobsPerService = 70 ActivityManager.isLowRamDeviceStatic() ? 1 : 3; 71 /** Amount of time a job is allowed to execute for before being considered timed-out. */ 72 private static final long EXECUTING_TIMESLICE_MILLIS = 10 * 60 * 1000; // 10mins. 73 /** Amount of time the JobScheduler will wait for a response from an app for a message. */ 74 private static final long OP_TIMEOUT_MILLIS = 8 * 1000; 75 76 private static final String[] VERB_STRINGS = { 77 "VERB_BINDING", "VERB_STARTING", "VERB_EXECUTING", "VERB_STOPPING", "VERB_FINISHED" 78 }; 79 80 // States that a job occupies while interacting with the client. 81 static final int VERB_BINDING = 0; 82 static final int VERB_STARTING = 1; 83 static final int VERB_EXECUTING = 2; 84 static final int VERB_STOPPING = 3; 85 static final int VERB_FINISHED = 4; 86 87 // Messages that result from interactions with the client service. 88 /** System timed out waiting for a response. */ 89 private static final int MSG_TIMEOUT = 0; 90 /** Received a callback from client. */ 91 private static final int MSG_CALLBACK = 1; 92 /** Run through list and start any ready jobs.*/ 93 private static final int MSG_SERVICE_BOUND = 2; 94 /** Cancel a job. */ 95 private static final int MSG_CANCEL = 3; 96 /** Shutdown the job. Used when the client crashes and we can't die gracefully.*/ 97 private static final int MSG_SHUTDOWN_EXECUTION = 4; 98 99 public static final int NO_PREFERRED_UID = -1; 100 101 private final Handler mCallbackHandler; 102 /** Make callbacks to {@link JobSchedulerService} to inform on job completion status. */ 103 private final JobCompletedListener mCompletedListener; 104 /** Used for service binding, etc. */ 105 private final Context mContext; 106 private final Object mLock; 107 private final IBatteryStats mBatteryStats; 108 private final JobPackageTracker mJobPackageTracker; 109 private PowerManager.WakeLock mWakeLock; 110 111 // Execution state. 112 private JobParameters mParams; 113 @VisibleForTesting 114 int mVerb; 115 private AtomicBoolean mCancelled = new AtomicBoolean(); 116 117 /** 118 * All the information maintained about the job currently being executed. 119 * 120 * Any reads (dereferences) not done from the handler thread must be synchronized on 121 * {@link #mLock}. 122 * Writes can only be done from the handler thread, or {@link #executeRunnableJob(JobStatus)}. 123 */ 124 private JobStatus mRunningJob; 125 /** Used to store next job to run when current job is to be preempted. */ 126 private int mPreferredUid; 127 IJobService service; 128 129 /** 130 * Whether this context is free. This is set to false at the start of execution, and reset to 131 * true when execution is complete. 132 */ 133 @GuardedBy("mLock") 134 private boolean mAvailable; 135 /** Track start time. */ 136 private long mExecutionStartTimeElapsed; 137 /** Track when job will timeout. */ 138 private long mTimeoutElapsed; 139 140 JobServiceContext(JobSchedulerService service, IBatteryStats batteryStats, 141 JobPackageTracker tracker, Looper looper) { 142 this(service.getContext(), service.getLock(), batteryStats, tracker, service, looper); 143 } 144 145 @VisibleForTesting 146 JobServiceContext(Context context, Object lock, IBatteryStats batteryStats, 147 JobPackageTracker tracker, JobCompletedListener completedListener, Looper looper) { 148 mContext = context; 149 mLock = lock; 150 mBatteryStats = batteryStats; 151 mJobPackageTracker = tracker; 152 mCallbackHandler = new JobServiceHandler(looper); 153 mCompletedListener = completedListener; 154 mAvailable = true; 155 mVerb = VERB_FINISHED; 156 mPreferredUid = NO_PREFERRED_UID; 157 } 158 159 /** 160 * Give a job to this context for execution. Callers must first check {@link #getRunningJob()} 161 * and ensure it is null to make sure this is a valid context. 162 * @param job The status of the job that we are going to run. 163 * @return True if the job is valid and is running. False if the job cannot be executed. 164 */ 165 boolean executeRunnableJob(JobStatus job) { 166 synchronized (mLock) { 167 if (!mAvailable) { 168 Slog.e(TAG, "Starting new runnable but context is unavailable > Error."); 169 return false; 170 } 171 172 mPreferredUid = NO_PREFERRED_UID; 173 174 mRunningJob = job; 175 final boolean isDeadlineExpired = 176 job.hasDeadlineConstraint() && 177 (job.getLatestRunTimeElapsed() < SystemClock.elapsedRealtime()); 178 Uri[] triggeredUris = null; 179 if (job.changedUris != null) { 180 triggeredUris = new Uri[job.changedUris.size()]; 181 job.changedUris.toArray(triggeredUris); 182 } 183 String[] triggeredAuthorities = null; 184 if (job.changedAuthorities != null) { 185 triggeredAuthorities = new String[job.changedAuthorities.size()]; 186 job.changedAuthorities.toArray(triggeredAuthorities); 187 } 188 mParams = new JobParameters(this, job.getJobId(), job.getExtras(), isDeadlineExpired, 189 triggeredUris, triggeredAuthorities); 190 mExecutionStartTimeElapsed = SystemClock.elapsedRealtime(); 191 192 mVerb = VERB_BINDING; 193 scheduleOpTimeOut(); 194 final Intent intent = new Intent().setComponent(job.getServiceComponent()); 195 boolean binding = mContext.bindServiceAsUser(intent, this, 196 Context.BIND_AUTO_CREATE | Context.BIND_NOT_FOREGROUND, 197 new UserHandle(job.getUserId())); 198 if (!binding) { 199 if (DEBUG) { 200 Slog.d(TAG, job.getServiceComponent().getShortClassName() + " unavailable."); 201 } 202 mRunningJob = null; 203 mParams = null; 204 mExecutionStartTimeElapsed = 0L; 205 mVerb = VERB_FINISHED; 206 removeOpTimeOut(); 207 return false; 208 } 209 try { 210 mBatteryStats.noteJobStart(job.getBatteryName(), job.getSourceUid()); 211 } catch (RemoteException e) { 212 // Whatever. 213 } 214 mJobPackageTracker.noteActive(job); 215 mAvailable = false; 216 return true; 217 } 218 } 219 220 /** 221 * Used externally to query the running job. Will return null if there is no job running. 222 * Be careful when using this function, at any moment it's possible that the job returned may 223 * stop executing. 224 */ 225 JobStatus getRunningJob() { 226 final JobStatus job; 227 synchronized (mLock) { 228 job = mRunningJob; 229 } 230 return job == null ? null : new JobStatus(job); 231 } 232 233 /** 234 * Internal non-cloning inspection of the currently running job, if any. The lock 235 * must be held when calling this *and* for the entire lifetime of using its returned 236 * JobStatus object! 237 */ 238 JobStatus getRunningJobUnsafeLocked() { 239 return mRunningJob; 240 } 241 242 /** Called externally when a job that was scheduled for execution should be cancelled. */ 243 void cancelExecutingJob(int reason) { 244 mCallbackHandler.obtainMessage(MSG_CANCEL, reason, 0 /* unused */).sendToTarget(); 245 } 246 247 void preemptExecutingJob() { 248 Message m = mCallbackHandler.obtainMessage(MSG_CANCEL); 249 m.arg1 = JobParameters.REASON_PREEMPT; 250 m.sendToTarget(); 251 } 252 253 int getPreferredUid() { 254 return mPreferredUid; 255 } 256 257 void clearPreferredUid() { 258 mPreferredUid = NO_PREFERRED_UID; 259 } 260 261 long getExecutionStartTimeElapsed() { 262 return mExecutionStartTimeElapsed; 263 } 264 265 long getTimeoutElapsed() { 266 return mTimeoutElapsed; 267 } 268 269 @Override 270 public void jobFinished(int jobId, boolean reschedule) { 271 if (!verifyCallingUid()) { 272 return; 273 } 274 mCallbackHandler.obtainMessage(MSG_CALLBACK, jobId, reschedule ? 1 : 0) 275 .sendToTarget(); 276 } 277 278 @Override 279 public void acknowledgeStopMessage(int jobId, boolean reschedule) { 280 if (!verifyCallingUid()) { 281 return; 282 } 283 mCallbackHandler.obtainMessage(MSG_CALLBACK, jobId, reschedule ? 1 : 0) 284 .sendToTarget(); 285 } 286 287 @Override 288 public void acknowledgeStartMessage(int jobId, boolean ongoing) { 289 if (!verifyCallingUid()) { 290 return; 291 } 292 mCallbackHandler.obtainMessage(MSG_CALLBACK, jobId, ongoing ? 1 : 0).sendToTarget(); 293 } 294 295 /** 296 * We acquire/release a wakelock on onServiceConnected/unbindService. This mirrors the work 297 * we intend to send to the client - we stop sending work when the service is unbound so until 298 * then we keep the wakelock. 299 * @param name The concrete component name of the service that has been connected. 300 * @param service The IBinder of the Service's communication channel, 301 */ 302 @Override 303 public void onServiceConnected(ComponentName name, IBinder service) { 304 JobStatus runningJob; 305 synchronized (mLock) { 306 // This isn't strictly necessary b/c the JobServiceHandler is running on the main 307 // looper and at this point we can't get any binder callbacks from the client. Better 308 // safe than sorry. 309 runningJob = mRunningJob; 310 } 311 if (runningJob == null || !name.equals(runningJob.getServiceComponent())) { 312 mCallbackHandler.obtainMessage(MSG_SHUTDOWN_EXECUTION).sendToTarget(); 313 return; 314 } 315 this.service = IJobService.Stub.asInterface(service); 316 final PowerManager pm = 317 (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 318 PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, 319 runningJob.getTag()); 320 wl.setWorkSource(new WorkSource(runningJob.getSourceUid())); 321 wl.setReferenceCounted(false); 322 wl.acquire(); 323 synchronized (mLock) { 324 // We use a new wakelock instance per job. In rare cases there is a race between 325 // teardown following job completion/cancellation and new job service spin-up 326 // such that if we simply assign mWakeLock to be the new instance, we orphan 327 // the currently-live lock instead of cleanly replacing it. Watch for this and 328 // explicitly fast-forward the release if we're in that situation. 329 if (mWakeLock != null) { 330 Slog.w(TAG, "Bound new job " + runningJob + " but live wakelock " + mWakeLock 331 + " tag=" + mWakeLock.getTag()); 332 mWakeLock.release(); 333 } 334 mWakeLock = wl; 335 } 336 mCallbackHandler.obtainMessage(MSG_SERVICE_BOUND).sendToTarget(); 337 } 338 339 /** If the client service crashes we reschedule this job and clean up. */ 340 @Override 341 public void onServiceDisconnected(ComponentName name) { 342 mCallbackHandler.obtainMessage(MSG_SHUTDOWN_EXECUTION).sendToTarget(); 343 } 344 345 /** 346 * This class is reused across different clients, and passes itself in as a callback. Check 347 * whether the client exercising the callback is the client we expect. 348 * @return True if the binder calling is coming from the client we expect. 349 */ 350 private boolean verifyCallingUid() { 351 synchronized (mLock) { 352 if (mRunningJob == null || Binder.getCallingUid() != mRunningJob.getUid()) { 353 if (DEBUG) { 354 Slog.d(TAG, "Stale callback received, ignoring."); 355 } 356 return false; 357 } 358 return true; 359 } 360 } 361 362 /** 363 * Handles the lifecycle of the JobService binding/callbacks, etc. The convention within this 364 * class is to append 'H' to each function name that can only be called on this handler. This 365 * isn't strictly necessary because all of these functions are private, but helps clarity. 366 */ 367 private class JobServiceHandler extends Handler { 368 JobServiceHandler(Looper looper) { 369 super(looper); 370 } 371 372 @Override 373 public void handleMessage(Message message) { 374 switch (message.what) { 375 case MSG_SERVICE_BOUND: 376 removeOpTimeOut(); 377 handleServiceBoundH(); 378 break; 379 case MSG_CALLBACK: 380 if (DEBUG) { 381 Slog.d(TAG, "MSG_CALLBACK of : " + mRunningJob 382 + " v:" + VERB_STRINGS[mVerb]); 383 } 384 removeOpTimeOut(); 385 386 if (mVerb == VERB_STARTING) { 387 final boolean workOngoing = message.arg2 == 1; 388 handleStartedH(workOngoing); 389 } else if (mVerb == VERB_EXECUTING || 390 mVerb == VERB_STOPPING) { 391 final boolean reschedule = message.arg2 == 1; 392 handleFinishedH(reschedule); 393 } else { 394 if (DEBUG) { 395 Slog.d(TAG, "Unrecognised callback: " + mRunningJob); 396 } 397 } 398 break; 399 case MSG_CANCEL: 400 if (mVerb == VERB_FINISHED) { 401 if (DEBUG) { 402 Slog.d(TAG, 403 "Trying to process cancel for torn-down context, ignoring."); 404 } 405 return; 406 } 407 mParams.setStopReason(message.arg1); 408 if (message.arg1 == JobParameters.REASON_PREEMPT) { 409 mPreferredUid = mRunningJob != null ? mRunningJob.getUid() : 410 NO_PREFERRED_UID; 411 } 412 handleCancelH(); 413 break; 414 case MSG_TIMEOUT: 415 handleOpTimeoutH(); 416 break; 417 case MSG_SHUTDOWN_EXECUTION: 418 closeAndCleanupJobH(true /* needsReschedule */); 419 break; 420 default: 421 Slog.e(TAG, "Unrecognised message: " + message); 422 } 423 } 424 425 /** Start the job on the service. */ 426 private void handleServiceBoundH() { 427 if (DEBUG) { 428 Slog.d(TAG, "MSG_SERVICE_BOUND for " + mRunningJob.toShortString()); 429 } 430 if (mVerb != VERB_BINDING) { 431 Slog.e(TAG, "Sending onStartJob for a job that isn't pending. " 432 + VERB_STRINGS[mVerb]); 433 closeAndCleanupJobH(false /* reschedule */); 434 return; 435 } 436 if (mCancelled.get()) { 437 if (DEBUG) { 438 Slog.d(TAG, "Job cancelled while waiting for bind to complete. " 439 + mRunningJob); 440 } 441 closeAndCleanupJobH(true /* reschedule */); 442 return; 443 } 444 try { 445 mVerb = VERB_STARTING; 446 scheduleOpTimeOut(); 447 service.startJob(mParams); 448 } catch (RemoteException e) { 449 Slog.e(TAG, "Error sending onStart message to '" + 450 mRunningJob.getServiceComponent().getShortClassName() + "' ", e); 451 } 452 } 453 454 /** 455 * State behaviours. 456 * VERB_STARTING -> Successful start, change job to VERB_EXECUTING and post timeout. 457 * _PENDING -> Error 458 * _EXECUTING -> Error 459 * _STOPPING -> Error 460 */ 461 private void handleStartedH(boolean workOngoing) { 462 switch (mVerb) { 463 case VERB_STARTING: 464 mVerb = VERB_EXECUTING; 465 if (!workOngoing) { 466 // Job is finished already so fast-forward to handleFinished. 467 handleFinishedH(false); 468 return; 469 } 470 if (mCancelled.get()) { 471 if (DEBUG) { 472 Slog.d(TAG, "Job cancelled while waiting for onStartJob to complete."); 473 } 474 // Cancelled *while* waiting for acknowledgeStartMessage from client. 475 handleCancelH(); 476 return; 477 } 478 scheduleOpTimeOut(); 479 break; 480 default: 481 Slog.e(TAG, "Handling started job but job wasn't starting! Was " 482 + VERB_STRINGS[mVerb] + "."); 483 return; 484 } 485 } 486 487 /** 488 * VERB_EXECUTING -> Client called jobFinished(), clean up and notify done. 489 * _STOPPING -> Successful finish, clean up and notify done. 490 * _STARTING -> Error 491 * _PENDING -> Error 492 */ 493 private void handleFinishedH(boolean reschedule) { 494 switch (mVerb) { 495 case VERB_EXECUTING: 496 case VERB_STOPPING: 497 closeAndCleanupJobH(reschedule); 498 break; 499 default: 500 Slog.e(TAG, "Got an execution complete message for a job that wasn't being" + 501 "executed. Was " + VERB_STRINGS[mVerb] + "."); 502 } 503 } 504 505 /** 506 * A job can be in various states when a cancel request comes in: 507 * VERB_BINDING -> Cancelled before bind completed. Mark as cancelled and wait for 508 * {@link #onServiceConnected(android.content.ComponentName, android.os.IBinder)} 509 * _STARTING -> Mark as cancelled and wait for 510 * {@link JobServiceContext#acknowledgeStartMessage(int, boolean)} 511 * _EXECUTING -> call {@link #sendStopMessageH}}, but only if there are no callbacks 512 * in the message queue. 513 * _ENDING -> No point in doing anything here, so we ignore. 514 */ 515 private void handleCancelH() { 516 if (JobSchedulerService.DEBUG) { 517 Slog.d(TAG, "Handling cancel for: " + mRunningJob.getJobId() + " " 518 + VERB_STRINGS[mVerb]); 519 } 520 switch (mVerb) { 521 case VERB_BINDING: 522 case VERB_STARTING: 523 mCancelled.set(true); 524 break; 525 case VERB_EXECUTING: 526 if (hasMessages(MSG_CALLBACK)) { 527 // If the client has called jobFinished, ignore this cancel. 528 return; 529 } 530 sendStopMessageH(); 531 break; 532 case VERB_STOPPING: 533 // Nada. 534 break; 535 default: 536 Slog.e(TAG, "Cancelling a job without a valid verb: " + mVerb); 537 break; 538 } 539 } 540 541 /** Process MSG_TIMEOUT here. */ 542 private void handleOpTimeoutH() { 543 switch (mVerb) { 544 case VERB_BINDING: 545 Slog.e(TAG, "Time-out while trying to bind " + mRunningJob.toShortString() + 546 ", dropping."); 547 closeAndCleanupJobH(false /* needsReschedule */); 548 break; 549 case VERB_STARTING: 550 // Client unresponsive - wedged or failed to respond in time. We don't really 551 // know what happened so let's log it and notify the JobScheduler 552 // FINISHED/NO-RETRY. 553 Slog.e(TAG, "No response from client for onStartJob '" + 554 mRunningJob.toShortString()); 555 closeAndCleanupJobH(false /* needsReschedule */); 556 break; 557 case VERB_STOPPING: 558 // At least we got somewhere, so fail but ask the JobScheduler to reschedule. 559 Slog.e(TAG, "No response from client for onStopJob, '" + 560 mRunningJob.toShortString()); 561 closeAndCleanupJobH(true /* needsReschedule */); 562 break; 563 case VERB_EXECUTING: 564 // Not an error - client ran out of time. 565 Slog.i(TAG, "Client timed out while executing (no jobFinished received)." + 566 " sending onStop. " + mRunningJob.toShortString()); 567 mParams.setStopReason(JobParameters.REASON_TIMEOUT); 568 sendStopMessageH(); 569 break; 570 default: 571 Slog.e(TAG, "Handling timeout for an invalid job state: " + 572 mRunningJob.toShortString() + ", dropping."); 573 closeAndCleanupJobH(false /* needsReschedule */); 574 } 575 } 576 577 /** 578 * Already running, need to stop. Will switch {@link #mVerb} from VERB_EXECUTING -> 579 * VERB_STOPPING. 580 */ 581 private void sendStopMessageH() { 582 removeOpTimeOut(); 583 if (mVerb != VERB_EXECUTING) { 584 Slog.e(TAG, "Sending onStopJob for a job that isn't started. " + mRunningJob); 585 closeAndCleanupJobH(false /* reschedule */); 586 return; 587 } 588 try { 589 mVerb = VERB_STOPPING; 590 scheduleOpTimeOut(); 591 service.stopJob(mParams); 592 } catch (RemoteException e) { 593 Slog.e(TAG, "Error sending onStopJob to client.", e); 594 closeAndCleanupJobH(false /* reschedule */); 595 } 596 } 597 598 /** 599 * The provided job has finished, either by calling 600 * {@link android.app.job.JobService#jobFinished(android.app.job.JobParameters, boolean)} 601 * or from acknowledging the stop message we sent. Either way, we're done tracking it and 602 * we want to clean up internally. 603 */ 604 private void closeAndCleanupJobH(boolean reschedule) { 605 final JobStatus completedJob; 606 synchronized (mLock) { 607 if (mVerb == VERB_FINISHED) { 608 return; 609 } 610 completedJob = mRunningJob; 611 mJobPackageTracker.noteInactive(completedJob); 612 try { 613 mBatteryStats.noteJobFinish(mRunningJob.getBatteryName(), 614 mRunningJob.getSourceUid()); 615 } catch (RemoteException e) { 616 // Whatever. 617 } 618 if (mWakeLock != null) { 619 mWakeLock.release(); 620 } 621 mContext.unbindService(JobServiceContext.this); 622 mWakeLock = null; 623 mRunningJob = null; 624 mParams = null; 625 mVerb = VERB_FINISHED; 626 mCancelled.set(false); 627 service = null; 628 mAvailable = true; 629 } 630 removeOpTimeOut(); 631 removeMessages(MSG_CALLBACK); 632 removeMessages(MSG_SERVICE_BOUND); 633 removeMessages(MSG_CANCEL); 634 removeMessages(MSG_SHUTDOWN_EXECUTION); 635 mCompletedListener.onJobCompleted(completedJob, reschedule); 636 } 637 } 638 639 /** 640 * Called when sending a message to the client, over whose execution we have no control. If 641 * we haven't received a response in a certain amount of time, we want to give up and carry 642 * on with life. 643 */ 644 private void scheduleOpTimeOut() { 645 removeOpTimeOut(); 646 647 final long timeoutMillis = (mVerb == VERB_EXECUTING) ? 648 EXECUTING_TIMESLICE_MILLIS : OP_TIMEOUT_MILLIS; 649 if (DEBUG) { 650 Slog.d(TAG, "Scheduling time out for '" + 651 mRunningJob.getServiceComponent().getShortClassName() + "' jId: " + 652 mParams.getJobId() + ", in " + (timeoutMillis / 1000) + " s"); 653 } 654 Message m = mCallbackHandler.obtainMessage(MSG_TIMEOUT); 655 mCallbackHandler.sendMessageDelayed(m, timeoutMillis); 656 mTimeoutElapsed = SystemClock.elapsedRealtime() + timeoutMillis; 657 } 658 659 660 private void removeOpTimeOut() { 661 mCallbackHandler.removeMessages(MSG_TIMEOUT); 662 } 663 } 664