| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.server.job.controllers; |
| |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.util.Log; |
| import android.util.Slog; |
| import android.util.proto.ProtoOutputStream; |
| |
| import com.android.internal.util.IndentingPrintWriter; |
| import com.android.server.AppStateTracker; |
| import com.android.server.AppStateTracker.Listener; |
| import com.android.server.LocalServices; |
| import com.android.server.job.JobSchedulerService; |
| import com.android.server.job.JobStore; |
| import com.android.server.job.StateControllerProto; |
| import com.android.server.job.StateControllerProto.BackgroundJobsController.TrackedJob; |
| |
| import java.util.Objects; |
| import java.util.function.Consumer; |
| import java.util.function.Predicate; |
| |
| /** |
| * Tracks the following pieces of JobStatus state: |
| * |
| * - the CONSTRAINT_BACKGROUND_NOT_RESTRICTED general constraint bit, which |
| * is used to selectively permit battery-saver exempted jobs to run; and |
| * |
| * - the uid-active boolean state expressed by the AppStateTracker. Jobs in 'active' |
| * uids are inherently eligible to run jobs regardless of the uid's standby bucket. |
| */ |
| public final class BackgroundJobsController extends StateController { |
| private static final String TAG = "JobScheduler.Background"; |
| private static final boolean DEBUG = JobSchedulerService.DEBUG |
| || Log.isLoggable(TAG, Log.DEBUG); |
| |
| // Tri-state about possible "is this uid 'active'?" knowledge |
| static final int UNKNOWN = 0; |
| static final int KNOWN_ACTIVE = 1; |
| static final int KNOWN_INACTIVE = 2; |
| |
| private final AppStateTracker mAppStateTracker; |
| |
| public BackgroundJobsController(JobSchedulerService service) { |
| super(service); |
| |
| mAppStateTracker = Objects.requireNonNull( |
| LocalServices.getService(AppStateTracker.class)); |
| mAppStateTracker.addListener(mForceAppStandbyListener); |
| } |
| |
| @Override |
| public void maybeStartTrackingJobLocked(JobStatus jobStatus, JobStatus lastJob) { |
| updateSingleJobRestrictionLocked(jobStatus, UNKNOWN); |
| } |
| |
| @Override |
| public void maybeStopTrackingJobLocked(JobStatus jobStatus, JobStatus incomingJob, |
| boolean forUpdate) { |
| } |
| |
| @Override |
| public void dumpControllerStateLocked(final IndentingPrintWriter pw, |
| final Predicate<JobStatus> predicate) { |
| mAppStateTracker.dump(pw); |
| pw.println(); |
| |
| mService.getJobStore().forEachJob(predicate, (jobStatus) -> { |
| final int uid = jobStatus.getSourceUid(); |
| final String sourcePkg = jobStatus.getSourcePackageName(); |
| pw.print("#"); |
| jobStatus.printUniqueId(pw); |
| pw.print(" from "); |
| UserHandle.formatUid(pw, uid); |
| pw.print(mAppStateTracker.isUidActive(uid) ? " active" : " idle"); |
| if (mAppStateTracker.isUidPowerSaveWhitelisted(uid) || |
| mAppStateTracker.isUidTempPowerSaveWhitelisted(uid)) { |
| pw.print(", whitelisted"); |
| } |
| pw.print(": "); |
| pw.print(sourcePkg); |
| |
| pw.print(" [RUN_ANY_IN_BACKGROUND "); |
| pw.print(mAppStateTracker.isRunAnyInBackgroundAppOpsAllowed(uid, sourcePkg) |
| ? "allowed]" : "disallowed]"); |
| |
| if ((jobStatus.satisfiedConstraints |
| & JobStatus.CONSTRAINT_BACKGROUND_NOT_RESTRICTED) != 0) { |
| pw.println(" RUNNABLE"); |
| } else { |
| pw.println(" WAITING"); |
| } |
| }); |
| } |
| |
| @Override |
| public void dumpControllerStateLocked(ProtoOutputStream proto, long fieldId, |
| Predicate<JobStatus> predicate) { |
| final long token = proto.start(fieldId); |
| final long mToken = proto.start(StateControllerProto.BACKGROUND); |
| |
| mAppStateTracker.dumpProto(proto, |
| StateControllerProto.BackgroundJobsController.APP_STATE_TRACKER); |
| |
| mService.getJobStore().forEachJob(predicate, (jobStatus) -> { |
| final long jsToken = |
| proto.start(StateControllerProto.BackgroundJobsController.TRACKED_JOBS); |
| |
| jobStatus.writeToShortProto(proto, TrackedJob.INFO); |
| final int sourceUid = jobStatus.getSourceUid(); |
| proto.write(TrackedJob.SOURCE_UID, sourceUid); |
| final String sourcePkg = jobStatus.getSourcePackageName(); |
| proto.write(TrackedJob.SOURCE_PACKAGE_NAME, sourcePkg); |
| |
| proto.write(TrackedJob.IS_IN_FOREGROUND, mAppStateTracker.isUidActive(sourceUid)); |
| proto.write(TrackedJob.IS_WHITELISTED, |
| mAppStateTracker.isUidPowerSaveWhitelisted(sourceUid) || |
| mAppStateTracker.isUidTempPowerSaveWhitelisted(sourceUid)); |
| |
| proto.write(TrackedJob.CAN_RUN_ANY_IN_BACKGROUND, |
| mAppStateTracker.isRunAnyInBackgroundAppOpsAllowed(sourceUid, sourcePkg)); |
| |
| proto.write(TrackedJob.ARE_CONSTRAINTS_SATISFIED, |
| (jobStatus.satisfiedConstraints & |
| JobStatus.CONSTRAINT_BACKGROUND_NOT_RESTRICTED) != 0); |
| |
| proto.end(jsToken); |
| }); |
| |
| proto.end(mToken); |
| proto.end(token); |
| } |
| |
| private void updateAllJobRestrictionsLocked() { |
| updateJobRestrictionsLocked(/*filterUid=*/ -1, UNKNOWN); |
| } |
| |
| private void updateJobRestrictionsForUidLocked(int uid, boolean isActive) { |
| updateJobRestrictionsLocked(uid, (isActive) ? KNOWN_ACTIVE : KNOWN_INACTIVE); |
| } |
| |
| private void updateJobRestrictionsLocked(int filterUid, int newActiveState) { |
| final UpdateJobFunctor updateTrackedJobs = new UpdateJobFunctor(newActiveState); |
| |
| final long start = DEBUG ? SystemClock.elapsedRealtimeNanos() : 0; |
| |
| final JobStore store = mService.getJobStore(); |
| if (filterUid > 0) { |
| store.forEachJobForSourceUid(filterUid, updateTrackedJobs); |
| } else { |
| store.forEachJob(updateTrackedJobs); |
| } |
| |
| final long time = DEBUG ? (SystemClock.elapsedRealtimeNanos() - start) : 0; |
| if (DEBUG) { |
| Slog.d(TAG, String.format( |
| "Job status updated: %d/%d checked/total jobs, %d us", |
| updateTrackedJobs.mCheckedCount, |
| updateTrackedJobs.mTotalCount, |
| (time / 1000) |
| )); |
| } |
| |
| if (updateTrackedJobs.mChanged) { |
| mStateChangedListener.onControllerStateChanged(); |
| } |
| } |
| |
| boolean updateSingleJobRestrictionLocked(JobStatus jobStatus, int activeState) { |
| |
| final int uid = jobStatus.getSourceUid(); |
| final String packageName = jobStatus.getSourcePackageName(); |
| |
| final boolean canRun = !mAppStateTracker.areJobsRestricted(uid, packageName, |
| (jobStatus.getInternalFlags() & JobStatus.INTERNAL_FLAG_HAS_FOREGROUND_EXEMPTION) |
| != 0); |
| |
| final boolean isActive; |
| if (activeState == UNKNOWN) { |
| isActive = mAppStateTracker.isUidActive(uid); |
| } else { |
| isActive = (activeState == KNOWN_ACTIVE); |
| } |
| boolean didChange = jobStatus.setBackgroundNotRestrictedConstraintSatisfied(canRun); |
| didChange |= jobStatus.setUidActive(isActive); |
| return didChange; |
| } |
| |
| private final class UpdateJobFunctor implements Consumer<JobStatus> { |
| final int activeState; |
| boolean mChanged = false; |
| int mTotalCount = 0; |
| int mCheckedCount = 0; |
| |
| public UpdateJobFunctor(int newActiveState) { |
| activeState = newActiveState; |
| } |
| |
| @Override |
| public void accept(JobStatus jobStatus) { |
| mTotalCount++; |
| mCheckedCount++; |
| if (updateSingleJobRestrictionLocked(jobStatus, activeState)) { |
| mChanged = true; |
| } |
| } |
| } |
| |
| private final Listener mForceAppStandbyListener = new Listener() { |
| @Override |
| public void updateAllJobs() { |
| synchronized (mLock) { |
| updateAllJobRestrictionsLocked(); |
| } |
| } |
| |
| @Override |
| public void updateJobsForUid(int uid, boolean isActive) { |
| synchronized (mLock) { |
| updateJobRestrictionsForUidLocked(uid, isActive); |
| } |
| } |
| |
| @Override |
| public void updateJobsForUidPackage(int uid, String packageName, boolean isActive) { |
| synchronized (mLock) { |
| updateJobRestrictionsForUidLocked(uid, isActive); |
| } |
| } |
| }; |
| } |