| /* |
| * Copyright (C) 2015 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.am; |
| |
| import android.Manifest; |
| import android.app.ActivityManager; |
| import android.content.pm.PackageManager; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.util.TimeUtils; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| /** |
| * Overall information about a uid that has actively running processes. |
| */ |
| public final class UidRecord { |
| final int uid; |
| int curProcState; |
| int setProcState = ActivityManager.PROCESS_STATE_NONEXISTENT; |
| long lastBackgroundTime; |
| boolean ephemeral; |
| boolean foregroundServices; |
| boolean curWhitelist; |
| boolean setWhitelist; |
| boolean idle; |
| int numProcs; |
| |
| /** |
| * Sequence number associated with the {@link #curProcState}. This is incremented using |
| * {@link ActivityManagerService#mProcStateSeqCounter} |
| * when {@link #curProcState} changes from background to foreground or vice versa. |
| */ |
| @GuardedBy("networkStateUpdate") |
| long curProcStateSeq; |
| |
| /** |
| * Last seq number for which NetworkPolicyManagerService notified ActivityManagerService that |
| * network policies rules were updated. |
| */ |
| @GuardedBy("networkStateUpdate") |
| long lastNetworkUpdatedProcStateSeq; |
| |
| /** |
| * Last seq number for which AcitivityManagerService dispatched uid state change to |
| * NetworkPolicyManagerService. |
| */ |
| @GuardedBy("networkStateUpdate") |
| long lastDispatchedProcStateSeq; |
| |
| /** |
| * Indicates if any thread is waiting for network rules to get updated for {@link #uid}. |
| */ |
| volatile boolean waitingForNetwork; |
| |
| /** |
| * Indicates whether this uid has internet permission or not. |
| */ |
| volatile boolean hasInternetPermission; |
| |
| /** |
| * This object is used for waiting for the network state to get updated. |
| */ |
| final Object networkStateLock = new Object(); |
| |
| static final int CHANGE_PROCSTATE = 0; |
| static final int CHANGE_GONE = 1; |
| static final int CHANGE_GONE_IDLE = 2; |
| static final int CHANGE_IDLE = 3; |
| static final int CHANGE_ACTIVE = 4; |
| |
| static final class ChangeItem { |
| UidRecord uidRecord; |
| int uid; |
| int change; |
| int processState; |
| boolean ephemeral; |
| long procStateSeq; |
| } |
| |
| ChangeItem pendingChange; |
| |
| public UidRecord(int _uid) { |
| uid = _uid; |
| idle = true; |
| reset(); |
| } |
| |
| public void reset() { |
| curProcState = ActivityManager.PROCESS_STATE_CACHED_EMPTY; |
| foregroundServices = false; |
| } |
| |
| public void updateHasInternetPermission() { |
| hasInternetPermission = ActivityManager.checkUidPermission(Manifest.permission.INTERNET, |
| uid) == PackageManager.PERMISSION_GRANTED; |
| } |
| |
| /** |
| * If the change being dispatched is neither CHANGE_GONE nor CHANGE_GONE_IDLE (not interested in |
| * these changes), then update the {@link #lastDispatchedProcStateSeq} with |
| * {@link #curProcStateSeq}. |
| */ |
| public void updateLastDispatchedProcStateSeq(int changeToDispatch) { |
| if (changeToDispatch != CHANGE_GONE && changeToDispatch != CHANGE_GONE_IDLE) { |
| lastDispatchedProcStateSeq = curProcStateSeq; |
| } |
| } |
| |
| public String toString() { |
| StringBuilder sb = new StringBuilder(128); |
| sb.append("UidRecord{"); |
| sb.append(Integer.toHexString(System.identityHashCode(this))); |
| sb.append(' '); |
| UserHandle.formatUid(sb, uid); |
| sb.append(' '); |
| sb.append(ProcessList.makeProcStateString(curProcState)); |
| if (ephemeral) { |
| sb.append(" ephemeral"); |
| } |
| if (foregroundServices) { |
| sb.append(" fgServices"); |
| } |
| if (curWhitelist) { |
| sb.append(" whitelist"); |
| } |
| if (lastBackgroundTime > 0) { |
| sb.append(" bg:"); |
| TimeUtils.formatDuration(SystemClock.elapsedRealtime()-lastBackgroundTime, sb); |
| } |
| if (idle) { |
| sb.append(" idle"); |
| } |
| sb.append(" procs:"); |
| sb.append(numProcs); |
| sb.append(" seq("); |
| sb.append(curProcStateSeq); |
| sb.append(","); |
| sb.append(lastNetworkUpdatedProcStateSeq); |
| sb.append(","); |
| sb.append(lastDispatchedProcStateSeq); |
| sb.append(")}"); |
| return sb.toString(); |
| } |
| } |