protected void notifyBackground() {
if (Thread.currentThread() != backgroundThread) {
synchronized (backgroundThread) {
backgroundThread.notifyAll();
}
}
}
// NOTE: Implement any IChildProcessService methods here.
@Override
public int setupConnection(Bundle args, IChildProcessCallback callback) {
mCallback = callback;
// Required to unparcel FileDescriptorInfo.
args.setClassLoader(getClassLoader());
synchronized (mMainThread) {
// Allow the command line to be set via bind() intent or setupConnection, but
// the FD can only be transferred here.
if (mCommandLineParams == null) {
mCommandLineParams = args.getStringArray(ChildProcessConnection.EXTRA_COMMAND_LINE);
}
// We must have received the command line by now
assert mCommandLineParams != null;
mCpuCount = args.getInt(ChildProcessConnection.EXTRA_CPU_COUNT);
mCpuFeatures = args.getLong(ChildProcessConnection.EXTRA_CPU_FEATURES);
assert mCpuCount > 0;
Parcelable[] fdInfosAsParcelable =
args.getParcelableArray(ChildProcessConnection.EXTRA_FILES);
// For why this arraycopy is necessary:
// http://stackoverflow.com/questions/8745893/i-dont-get-why-this-classcastexception-occurs
mFdInfos = new FileDescriptorInfo[fdInfosAsParcelable.length];
System.arraycopy(fdInfosAsParcelable, 0, mFdInfos, 0, fdInfosAsParcelable.length);
Bundle sharedRelros = args.getBundle(Linker.EXTRA_LINKER_SHARED_RELROS);
if (sharedRelros != null) {
Linker.getInstance().useSharedRelros(sharedRelros);
sharedRelros = null;
}
mMainThread.notifyAll();
}
return Process.myPid();
}
/** Processes splash screen touch events */
@Override
public boolean onTouchEvent(MotionEvent evt) {
if (evt.getAction() == MotionEvent.ACTION_DOWN) {
synchronized (mSplashThread) {
mSplashThread.notifyAll();
}
}
return true;
}
@Override
public IBinder onBind(Intent intent) {
// We call stopSelf() to request that this service be stopped as soon as the client
// unbinds. Otherwise the system may keep it around and available for a reconnect. The
// child processes do not currently support reconnect; they must be initialized from
// scratch every time.
stopSelf();
synchronized (mMainThread) {
mCommandLineParams = intent.getStringArrayExtra(ChildProcessConnection.EXTRA_COMMAND_LINE);
// mLinkerParams is never used if Linker.isUsed() returns false.
// See onCreate().
mLinkerParams = new ChromiumLinkerParams(intent);
mIsBound = true;
mMainThread.notifyAll();
}
return mBinder;
}
@Override
public void handle(TaskSchedulerEvent event) {
if (event.getType() == EventType.T_SCHEDULE) {
if (event instanceof FragmentScheduleEvent) {
FragmentScheduleEvent castEvent = (FragmentScheduleEvent) event;
if (context.isLeafQuery()) {
TaskAttemptScheduleContext taskContext = new TaskAttemptScheduleContext();
Task task = Stage.newEmptyTask(context, taskContext, stage, nextTaskId++);
task.addFragment(castEvent.getLeftFragment(), true);
scheduledObjectNum++;
if (castEvent.hasRightFragments()) {
task.addFragments(castEvent.getRightFragments());
}
stage.getEventHandler().handle(new TaskEvent(task.getId(), TaskEventType.T_SCHEDULE));
} else {
fragmentsForNonLeafTask = new FileFragment[2];
fragmentsForNonLeafTask[0] = castEvent.getLeftFragment();
if (castEvent.hasRightFragments()) {
Collection<Fragment> var = castEvent.getRightFragments();
FileFragment[] rightFragments = var.toArray(new FileFragment[var.size()]);
fragmentsForNonLeafTask[1] = rightFragments[0];
if (rightFragments.length > 1) {
broadcastFragmentsForNonLeafTask = new FileFragment[rightFragments.length - 1];
System.arraycopy(
rightFragments,
1,
broadcastFragmentsForNonLeafTask,
0,
broadcastFragmentsForNonLeafTask.length);
} else {
broadcastFragmentsForNonLeafTask = null;
}
}
}
} else if (event instanceof FetchScheduleEvent) {
FetchScheduleEvent castEvent = (FetchScheduleEvent) event;
Map<String, List<FetchImpl>> fetches = castEvent.getFetches();
TaskAttemptScheduleContext taskScheduleContext = new TaskAttemptScheduleContext();
Task task = Stage.newEmptyTask(context, taskScheduleContext, stage, nextTaskId++);
scheduledObjectNum++;
for (Entry<String, List<FetchImpl>> eachFetch : fetches.entrySet()) {
task.addFetches(eachFetch.getKey(), eachFetch.getValue());
task.addFragment(fragmentsForNonLeafTask[0], true);
if (fragmentsForNonLeafTask[1] != null) {
task.addFragment(fragmentsForNonLeafTask[1], true);
}
}
if (broadcastFragmentsForNonLeafTask != null
&& broadcastFragmentsForNonLeafTask.length > 0) {
task.addFragments(Arrays.asList(broadcastFragmentsForNonLeafTask));
}
stage.getEventHandler().handle(new TaskEvent(task.getId(), TaskEventType.T_SCHEDULE));
} else if (event instanceof TaskAttemptToSchedulerEvent) {
TaskAttemptToSchedulerEvent castEvent = (TaskAttemptToSchedulerEvent) event;
if (context.isLeafQuery()) {
scheduledRequests.addLeafTask(castEvent);
} else {
scheduledRequests.addNonLeafTask(castEvent);
}
if (needWakeup.getAndSet(false)) {
// wake up scheduler thread after scheduled
synchronized (schedulingThread) {
schedulingThread.notifyAll();
}
}
}
} else if (event.getType() == EventType.T_SCHEDULE_CANCEL) {
// when a stage is killed, unassigned query unit attmpts are canceled from the scheduler.
// This event is triggered by TaskAttempt.
TaskAttemptToSchedulerEvent castedEvent = (TaskAttemptToSchedulerEvent) event;
scheduledRequests.leafTasks.remove(castedEvent.getTaskAttempt().getId());
LOG.info(
castedEvent.getTaskAttempt().getId()
+ " is canceled from "
+ this.getClass().getSimpleName());
((TaskAttemptToSchedulerEvent) event)
.getTaskAttempt()
.handle(
new TaskAttemptEvent(
castedEvent.getTaskAttempt().getId(), TaskAttemptEventType.TA_SCHEDULE_CANCELED));
}
}