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Commit 00c02ac6 authored by Kweku Adams's avatar Kweku Adams
Browse files

Add basic multipliers.

Multipliers modify cost-to-produce and ultimately the end price
depending on device and app state.

Bug: 158300259
Test: Android builds
Change-Id: I6d622ee28bb4de72ead0d3eb3e0b209bad538bfc
parent b7b5ef1f
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/*
 * Copyright (C) 2021 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.tare;

import android.annotation.NonNull;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;
import android.os.SystemClock;
import android.util.IndentingPrintWriter;
import android.util.Log;
import android.util.Slog;

/** Multiplier that makes things free when the device is charging. */
class ChargingMultiplier extends Multiplier {
    private static final String TAG = "TARE-" + ChargingMultiplier.class.getSimpleName();
    private static final boolean DEBUG = InternalResourceService.DEBUG
            || Log.isLoggable(TAG, Log.DEBUG);

    private final InternalResourceService mIrs;
    private final ChargingTracker mChargingTracker;

    ChargingMultiplier(@NonNull InternalResourceService irs) {
        super(true, true);
        mIrs = irs;
        mChargingTracker = new ChargingTracker();
        mChargingTracker.startTracking(irs.getContext());
    }

    double getCurrentMultiplier() {
        if (mChargingTracker.mCharging) {
            return 0;
        }
        return 1;
    }

    @Override
    void dump(IndentingPrintWriter pw) {
        pw.print("charging=");
        pw.println(mChargingTracker.mCharging);
    }

    private final class ChargingTracker extends BroadcastReceiver {
        /**
         * Track whether we're "charging", where charging means that we're ready to commit to
         * doing work.
         */
        private volatile boolean mCharging;

        public void startTracking(@NonNull Context context) {
            final IntentFilter filter = new IntentFilter();
            filter.addAction(BatteryManager.ACTION_CHARGING);
            filter.addAction(BatteryManager.ACTION_DISCHARGING);
            context.registerReceiver(this, filter);

            // Initialise tracker state.
            final BatteryManager batteryManager = context.getSystemService(BatteryManager.class);
            mCharging = batteryManager.isCharging();
        }

        @Override
        public void onReceive(Context context, Intent intent) {
            final String action = intent.getAction();
            if (BatteryManager.ACTION_CHARGING.equals(action)) {
                if (DEBUG) {
                    Slog.d(TAG, "Received charging intent, fired @ "
                            + SystemClock.elapsedRealtime());
                }
                if (!mCharging) {
                    mCharging = true;
                    mIrs.onDeviceStateChanged();
                }
            } else if (BatteryManager.ACTION_DISCHARGING.equals(action)) {
                if (DEBUG) {
                    Slog.d(TAG, "Disconnected from power.");
                }
                if (mCharging) {
                    mCharging = false;
                    mIrs.onDeviceStateChanged();
                }
            }
        }
    }
}
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/*
 * Copyright (C) 2021 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.tare;

import android.annotation.NonNull;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.PowerManager;
import android.util.IndentingPrintWriter;
import android.util.Log;

/** Multiplier that makes things more expensive in light and deep doze. */
class DeviceIdleMultiplier extends Multiplier {
    private static final String TAG = "TARE-" + DeviceIdleMultiplier.class.getSimpleName();
    private static final boolean DEBUG = InternalResourceService.DEBUG
            || Log.isLoggable(TAG, Log.DEBUG);

    private final InternalResourceService mIrs;
    private final PowerManager mPowerManager;
    private final DeviceIdleTracker mDeviceIdleTracker;

    DeviceIdleMultiplier(@NonNull InternalResourceService irs) {
        super(true, false);
        mIrs = irs;
        mPowerManager = irs.getContext().getSystemService(PowerManager.class);
        mDeviceIdleTracker = new DeviceIdleTracker();
        mDeviceIdleTracker.startTracking(irs.getContext());
    }

    double getCurrentMultiplier() {
        if (mDeviceIdleTracker.mDeviceIdle) {
            return 1.2;
        }
        if (mDeviceIdleTracker.mDeviceLightIdle) {
            return 1.1;
        }
        return 1;
    }

    @Override
    void dump(IndentingPrintWriter pw) {
        pw.print("idle=");
        pw.println(mDeviceIdleTracker.mDeviceIdle);
        pw.print("lightIdle=");
        pw.println(mDeviceIdleTracker.mDeviceLightIdle);
    }

    private final class DeviceIdleTracker extends BroadcastReceiver {

        private volatile boolean mDeviceIdle;
        private volatile boolean mDeviceLightIdle;

        DeviceIdleTracker() {
        }

        void startTracking(@NonNull Context context) {
            IntentFilter filter = new IntentFilter();
            filter.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED);
            filter.addAction(PowerManager.ACTION_LIGHT_DEVICE_IDLE_MODE_CHANGED);
            context.registerReceiver(this, filter);

            // Initialise tracker state.
            mDeviceIdle = mPowerManager.isDeviceIdleMode();
            mDeviceLightIdle = mPowerManager.isLightDeviceIdleMode();
        }

        @Override
        public void onReceive(Context context, Intent intent) {
            final String action = intent.getAction();
            if (PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED.equals(action)) {
                if (mDeviceIdle != mPowerManager.isDeviceIdleMode()) {
                    mDeviceIdle = mPowerManager.isDeviceIdleMode();
                    mIrs.onDeviceStateChanged();
                }
            } else if (PowerManager.ACTION_LIGHT_DEVICE_IDLE_MODE_CHANGED.equals(action)) {
                if (mDeviceIdle != mPowerManager.isLightDeviceIdleMode()) {
                    mDeviceLightIdle = mPowerManager.isLightDeviceIdleMode();
                    mIrs.onDeviceStateChanged();
                }
            }
        }
    }
}
+6 −5
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@@ -64,14 +64,15 @@ public class InternalResourceService extends SystemService {
    private final BatteryManagerInternal mBatteryManagerInternal;
    private final PackageManager mPackageManager;

    @GuardedBy("mLock")
    private final CopyOnWriteArraySet<BalanceChangeListener> mBalanceChangeListeners =
            new CopyOnWriteArraySet<>();

    @NonNull
    @GuardedBy("mLock")
    private List<PackageInfo> mPkgCache = new ArrayList<>();

    /** Cached mapping of UIDs (for all users) to a list of packages in the UID. */
    @GuardedBy("mLock")
    private final SparseSetArray<String> mUidToPackageCache = new SparseSetArray<>();

    @GuardedBy("mLock")
@@ -185,7 +186,7 @@ public class InternalResourceService extends SystemService {
    ArraySet<String> getPackagesForUidLocked(final int uid) {
        ArraySet<String> packages = mUidToPackageCache.get(uid);
        if (packages == null) {
            String[] pkgs = mPackageManager.getPackagesForUid(uid);
            final String[] pkgs = mPackageManager.getPackagesForUid(uid);
            if (pkgs != null) {
                for (String pkg : pkgs) {
                    mUidToPackageCache.add(uid, pkg);
@@ -196,9 +197,6 @@ public class InternalResourceService extends SystemService {
        return packages;
    }

    void onAppStateChanged(final int userId, @NonNull final ArraySet<String> pkgNames) {
    }

    void onBatteryLevelChanged() {
        synchronized (mLock) {
            final int newBatteryLevel = getCurrentBatteryLevel();
@@ -245,6 +243,9 @@ public class InternalResourceService extends SystemService {
        }
    }

    void onUidStateChanged(final int uid) {
    }

    void onUserAdded(final int userId) {
        synchronized (mLock) {
            loadInstalledPackageListLocked();
+70 −0
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/*
 * Copyright (C) 2021 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.tare;

import android.annotation.IntDef;
import android.util.IndentingPrintWriter;

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

/**
 * Base class of a multiplier that can affect end pricing.
 */
abstract class Multiplier {
    static final int STATE_MULTIPLIER_CHARGING = 0;
    static final int STATE_MULTIPLIER_DEVICE_IDLE = 1;
    static final int STATE_MULTIPLIER_POWER_SAVE_MODE = 2;
    static final int STATE_MULTIPLIER_PROCESS_STATE = 3;
    static final int NUM_STATE_MULTIPLIERS = STATE_MULTIPLIER_PROCESS_STATE + 1;

    @IntDef({
            STATE_MULTIPLIER_CHARGING,
            STATE_MULTIPLIER_DEVICE_IDLE,
            STATE_MULTIPLIER_POWER_SAVE_MODE,
            STATE_MULTIPLIER_PROCESS_STATE,
    })
    @Retention(RetentionPolicy.SOURCE)
    public @interface StateMultiplier {
    }

    /**
     * Affects the "cost to produce" (perform) the action
     *
     * @see EconomicPolicy.Action#costToProduce
     */
    public final boolean affectsCtp;
    /**
     * Affects the final price of the action
     *
     * @see EconomicPolicy.Action#basePrice
     */
    public final boolean affectsPrice;

    Multiplier(boolean affectsCtp, boolean affectsPrice) {
        this.affectsCtp = affectsCtp;
        this.affectsPrice = affectsPrice;
    }

    /** Get the multiplier based on the current device state. */
    abstract double getCurrentMultiplier();

    void onSystemServicesReady() {
    }

    abstract void dump(IndentingPrintWriter pw);
}
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/*
 * Copyright (C) 2021 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.tare;

import android.annotation.NonNull;
import android.os.PowerManager;
import android.util.IndentingPrintWriter;

/** Multiplier that makes things more expensive in adaptive and full battery saver are active. */
class PowerSaveModeMultiplier extends Multiplier {
    private final InternalResourceService mIrs;
    private final PowerManager mPowerManager;

    PowerSaveModeMultiplier(@NonNull InternalResourceService irs) {
        super(true, false);
        mIrs = irs;
        mPowerManager = irs.getContext().getSystemService(PowerManager.class);
    }

    double getCurrentMultiplier() {
        if (mPowerManager.isPowerSaveMode()) {
            return 1.5;
        }
        // TODO: get adaptive power save mode
        if (mPowerManager.isPowerSaveMode()) {
            return 1.25;
        }
        return 1;
    }

    @Override
    void dump(IndentingPrintWriter pw) {
        pw.print("power save=");
        pw.println(mPowerManager.isPowerSaveMode());
    }
}
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