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Commit 993c687d authored by Steve Kondik's avatar Steve Kondik Committed by Steve Kondik
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perf: Per-app performance profiles 

 * Performance Profiles is going to grow into a much more powerful
   feature which can apply advanced optimizations or power saving
   techniques depending on both the state of the hardware as well
   as the current applications in use.
 * Refactor the original code and move it into PowerManager so
   that it's managed from the same place.
 * Implement "automatic performance profiles". This feature will
   automatically select a profile when specific activities are
   running. Currently this list is static and engages performance
   mode for several benchmarks (trollface).
 * Added support for a new power hint, POWER_HINT_SET_PROFILE.
   Currently, these profiles are fired using a property trigger
   in init. This is easy, but the PowerHAL can do more.
 * Moved the setting to Settings.Secure and also wrapped calls
   to the service in the DEVICE_POWER permission. Nobody should
   mess with this stuff except the system.
 * Powersave profile will automatically activate Android's built-in
   low power mode.
 * Original patch by Jorge Ruesga

TODO:
 * Implement API for per-app configuration by user
 * Quicksettings tile

Change-Id: I140ebc0648c4cf05900e005923247c3180be8c93
parent 5716b670

core/java/android/os/IPowerManager.aidl

+5 −0
Original line number Diff line number Diff line
@@ -68,4 +68,9 @@ interface IPowerManager 
    void setKeyboardLight(boolean on, int key);



	void wakeUpWithProximityCheck(long time);



	boolean setPowerProfile(String profile);

	String getPowerProfile();



    void activityResumed(String componentName);

}

core/java/android/os/PowerManager.java

+113 −0
Original line number Diff line number Diff line
@@ -18,7 +18,10 @@ package android.os; 


import android.annotation.SdkConstant;

import android.annotation.SystemApi;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.text.TextUtils;

import android.util.Log;



/**
@@ -368,6 +371,31 @@ public final class PowerManager { 
     */

    public static final String REBOOT_RECOVERY = "recovery";

    

    /**

     * Power save profile

     * @hide

     */

    public static final String PROFILE_POWER_SAVE = "0";



    /**

     * Balanced power profile

     * @hide

     */

    public static final String PROFILE_BALANCED = "1";



    /**

     * High-performance profile

     * @hide

     */

    public static final String PROFILE_HIGH_PERFORMANCE = "2";



    /**

     * Broadcast sent when profile is changed

     * @hide

     */

    public static final String POWER_PROFILE_CHANGED =

            "com.cyanogenmod.power.PROFILE_CHANGED";



    final Context mContext;

    final IPowerManager mService;

    final Handler mHandler;
@@ -864,6 +892,91 @@ public final class PowerManager { 
    /** @hide */

    public static final String EXTRA_POWER_SAVE_MODE = "mode";



    /**

     * True if the system supports power profiles

     *

     * @hide

     */

    public boolean hasPowerProfiles() {

        return !TextUtils.isEmpty(getDefaultPowerProfile()) &&

               !TextUtils.isEmpty(mContext.getResources().getString(

                       com.android.internal.R.string.config_perf_profile_prop));

    }



    /**

     * Gets the default power profile for the device.

     *

     * Returns null if not enabled.

     *

     * @hide

     */

    public String getDefaultPowerProfile() {

        return mContext.getResources().getString(

                com.android.internal.R.string.config_perf_profile_default_entry);

    }



    /**

     * Set the system power profile

     *

     * @throws IllegalArgumentException if invalid

     * @hide

     */

    public boolean setPowerProfile(String profile) {

        if (!hasPowerProfiles()) {

            throw new IllegalArgumentException("Power profiles not enabled on this system!");

        }



        boolean changed = false;

        try {

            if (mService != null) {

                changed = mService.setPowerProfile(profile);

            }

        } catch (RemoteException e) {

            throw new IllegalArgumentException(e);

        }

        return changed;

    }



    /**

     * Gets the current power profile

     *

     * Returns null if power profiles are not enabled

     * @hide

     */

    public String getPowerProfile() {

        String ret = null;

        if (hasPowerProfiles()) {

            try {

                if (mService != null) {

                    ret = mService.getPowerProfile();

                }

            } catch (RemoteException e) {

                // nothing

            }

        }

        return ret;

    }



    /**

     * Update profile for resumed app, called from ActivityStack

     * @hide

     */

    public void activityResumed(Intent intent) {

        String ret = null;

        if (hasPowerProfiles()) {

            try {

                if (intent != null && mService != null) {

                    ComponentName cn = intent.getComponent();

                    if (cn != null) {

                        mService.activityResumed(cn.flattenToString());

                    }

                }

            } catch (RemoteException e) {

                // nothing

            }

        }

    }



    /**

     * A wake lock is a mechanism to indicate that your application needs

     * to have the device stay on.

core/java/android/provider/Settings.java

+13 −0
Original line number Diff line number Diff line
@@ -5498,6 +5498,19 @@ public final class Settings { 
        public static final String STATS_COLLECTION = "stats_collection";





        /**

         * Performance profile

         * @see config_perf_profile_prop in frameworks/base/core/res/res/values/config.xml

         * @hide

         */

        public static final String PERFORMANCE_PROFILE = "performance_profile";



        /**

         * App-based performance profile selection

         * @hide

         */

        public static final String APP_PERFORMANCE_PROFILES_ENABLED = "app_perf_profiles_enabled";



        /**

         * This are the settings to be backed up.

         *

core/res/res/values/cm_arrays.xml

+13 −0
Original line number Diff line number Diff line
@@ -105,4 +105,17 @@ 
        <item>@string/app_ops_alarm_wakeup</item>

    </string-array>



    <!-- Performance profiles -->

    <string-array name="perf_profile_entries" translatable="false">

        <item>@string/perf_profile_pwrsv</item>

        <item>@string/perf_profile_bal</item>

        <item>@string/perf_profile_perf</item>

    </string-array>



    <string-array name="perf_profile_values" translatable="false">

        <item>0</item>

        <item>1</item>

        <item>2</item>

    </string-array>



</resources>

core/res/res/values/cm_strings.xml

100755 → 100644
+6 −0
Original line number Diff line number Diff line
@@ -211,4 +211,10 @@ 
    <string name="def_wifi_wifihotspot_pass" translatable="false"></string>

    <!-- Default wi-fi direct name -->

    <string name="def_wifi_direct_name" translatable="false"></string>



    <!-- Performance profile modes -->

    <string name="perf_profile_pwrsv">Power save</string>

    <string name="perf_profile_bal">Balanced</string>

    <string name="perf_profile_perf">Performance</string>



</resources>