311 lines
12 KiB
Java
311 lines
12 KiB
Java
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/*
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* Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of The Linux Foundation nor
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* the names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.android.server;
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import android.os.Power;
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import android.os.PowerManager;
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import android.os.SystemProperties;
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import android.app.AlarmManager;
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import android.app.PendingIntent;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.BroadcastReceiver;
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import android.text.format.Time;
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import java.util.Calendar;
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import android.util.Log;
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class DynamicMemoryManagerService {
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private final String TAG = "DMM Service";
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private Context mContext;
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private boolean SCREEN_ON = false;
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private boolean DPD_START = false;
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private boolean START_ALARM_SET = false;
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private boolean STOP_ALARM_SET = false;
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private int prevStartHr = 0;
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private int prevStartMin = 0;
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private int prevStopHr = 0;
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private int prevStopMin = 0;
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private enum DMM_MEM_STATE {ACTIVE, DISABLED}
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private DMM_MEM_STATE mState;
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private AlarmManager mStartAlarmManager, mStopAlarmManager;
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private Intent mStartIntent, mStopIntent;
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private PendingIntent mStartPendingIntent, mStopPendingIntent;
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private static final String ACTION_DPD_START =
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"com.android.server.DMMService.action.DPD_START";
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private static final String ACTION_DPD_STOP =
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"com.android.server.DMMService.action.DPD_STOP";
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private final boolean DEBUG = false;
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public DynamicMemoryManagerService(Context context) {
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mContext = context;
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Log.w(TAG, "ro.dev.dmm.dpd.start_address = "
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+ SystemProperties.get("ro.dev.dmm.dpd.start_address", "0"));
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if(SystemProperties.get("ro.dev.dmm.dpd.start_address", "0").compareTo("0") != 0) {
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mState = DMM_MEM_STATE.ACTIVE;
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registerForBroadcasts();
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mStartIntent = new Intent(ACTION_DPD_START, null);
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mStopIntent = new Intent(ACTION_DPD_STOP, null);
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mStartPendingIntent = PendingIntent.getBroadcast(mContext, 0, mStartIntent, 0);
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mStopPendingIntent = PendingIntent.getBroadcast(mContext, 0, mStopIntent, 0);
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mStartAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
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mStopAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
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Log.w(TAG, "DynamicMemoryManager Service Initialized");
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}
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else
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Log.w(TAG, "DynamicMemoryManager Service Disabled.");
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}
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private void registerForBroadcasts() {
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IntentFilter intentFilter = new IntentFilter();
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intentFilter.addAction(Intent.ACTION_BOOT_COMPLETED);
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intentFilter.addAction(Intent.ACTION_SCREEN_ON);
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intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
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intentFilter.addAction(ACTION_DPD_START);
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intentFilter.addAction(ACTION_DPD_STOP);
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mContext.registerReceiver(mReceiver, intentFilter);
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}
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protected void finalize() {
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if (DEBUG) Log.w(TAG, "DynamicMemoryManagerService Finalize");
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}
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private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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String action = intent.getAction();
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if(action.equals(Intent.ACTION_BOOT_COMPLETED)) {
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if (DEBUG) Log.w(TAG, "ACTION_BOOT_COMPLETED");
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manageAlarms();
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}
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else if(action.equals(Intent.ACTION_SCREEN_ON)) {
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if (DEBUG) Log.w(TAG, "ACTION_SCREEN_ON");
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enableUnstableMemory(true);
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SCREEN_ON = true;
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}
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else if(action.equals(Intent.ACTION_SCREEN_OFF)) {
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if (DEBUG) Log.w(TAG, "ACTION_SCREEN_OFF");
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SCREEN_ON = false;
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manageAlarms();
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checkCurrentStatus();
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if (DEBUG) Log.w(TAG, "DPD_START is set to " + DPD_START);
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if(DPD_START)
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enableUnstableMemory(false);
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}
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else if (action.equals(ACTION_DPD_START)) {
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if (DEBUG) Log.w(TAG, "ACTION_DPD_START");
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DPD_START = true;
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START_ALARM_SET = false;
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if(!SCREEN_ON)
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enableUnstableMemory(false);
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}
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else if (action.equals(ACTION_DPD_STOP)) {
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if (DEBUG) Log.w(TAG, "ACTION_DPD_STOP");
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DPD_START = false;
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STOP_ALARM_SET = false;
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}
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}
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};
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private boolean manageAlarms() {
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if (DEBUG) Log.w(TAG, "Manage Alarms");
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if(dpdEnabled() == 1) {
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setStartAlarm();
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setStopAlarm();
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}
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else {
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cancelStartAlarm();
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cancelStopAlarm();
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DPD_START = false;
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}
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return true;
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}
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private int dpdEnabled() {
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if (DEBUG) Log.w(TAG, "DPD Enabled: " +
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SystemProperties.getInt("persist.sys.dpd", 1));
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return SystemProperties.getInt("persist.sys.dpd", 1);
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}
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private boolean setStartAlarm() {
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int startHr = SystemProperties.getInt("persist.sys.dpd.start_hr", 20);
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int startMin = SystemProperties.getInt("persist.sys.dpd.start_min", 0);
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long delay_ms = 0;
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if (DEBUG) Log.w(TAG, "DPD_START = " + DPD_START);
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if (DEBUG) Log.w(TAG, "Prev Start: Hr = " + prevStartHr + " Min = " + prevStartMin);
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if (DEBUG) Log.w(TAG, " Start: Hr = " + startHr + " Min = " + startMin);
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if (DEBUG) Log.w(TAG, "START_ALARM_SET = " + START_ALARM_SET);
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if(startHr != prevStartHr || startMin != prevStartMin || !START_ALARM_SET) {
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prevStartHr = startHr;
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prevStartMin = startMin;
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cancelStartAlarm();
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delay_ms = getDelay(startHr, startMin);
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if (DEBUG) Log.w(TAG, "Set Start Alarm after " + delay_ms + "ms");
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mStartAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
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delay_ms,
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AlarmManager.INTERVAL_DAY,
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mStartPendingIntent);
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START_ALARM_SET = true;
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}
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return true;
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}
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private boolean cancelStartAlarm() {
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if (DEBUG) Log.w(TAG, "Cancel Start Alarm");
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mStartAlarmManager.cancel(mStartPendingIntent);
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START_ALARM_SET = false;
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return true;
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}
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private boolean setStopAlarm() {
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int stopHr = SystemProperties.getInt("persist.sys.dpd.stop_hr", 7);
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int stopMin = SystemProperties.getInt("persist.sys.dpd.stop_min", 0);
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long delay_ms = 0;
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if (DEBUG) Log.w(TAG, "Prev Stop Hr = " + prevStopHr + " Min = " + prevStopMin);
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if (DEBUG) Log.w(TAG, " Stop Hr = " + stopHr + " Min = " + stopMin);
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if (DEBUG) Log.w(TAG, "STOP_ALARM_SET = " + STOP_ALARM_SET);
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if(stopHr != prevStopHr || stopMin != prevStopMin || !STOP_ALARM_SET) {
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prevStopHr = stopHr;
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prevStopMin = stopMin;
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cancelStopAlarm();
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delay_ms = getDelay(stopHr, stopMin);
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if (DEBUG) Log.w(TAG, "Set Stop Alarm after " + delay_ms + "ms");
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mStopAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
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delay_ms,
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AlarmManager.INTERVAL_DAY,
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mStopPendingIntent);
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STOP_ALARM_SET = true;
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}
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return true;
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}
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private boolean cancelStopAlarm() {
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if (DEBUG) Log.w(TAG, "Cancel Stop Alarm");
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mStopAlarmManager.cancel(mStopPendingIntent);
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STOP_ALARM_SET = false;
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return true;
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}
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private long getDelay(int sHr, int sMin) {
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final Calendar calendar = Calendar.getInstance();
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int dHr = sHr - calendar.get(Calendar.HOUR_OF_DAY);
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int dMin = sMin - calendar.get(Calendar.MINUTE);
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if(dHr < 0)
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dHr = 24 + dHr;
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if(dMin < 0) {
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dMin = 60 + dMin;
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if(dHr > 0)
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dHr = dHr - 1;
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else
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dHr = 24 + dHr - 1;
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}
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if (DEBUG) Log.w(TAG, "Current time " + calendar.get(Calendar.HOUR_OF_DAY) +
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":" +calendar.get(Calendar.MINUTE));
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if (DEBUG) Log.w(TAG, "Alarm time " + sHr + ":" + sMin);
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if (DEBUG) Log.w(TAG, "Next Alarm after " + dHr + " hrs and " + dMin + " mins");
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return (((dHr * 60) + dMin) * 60 * 1000) + System.currentTimeMillis();
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}
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private void checkCurrentStatus() {
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final Calendar calendar = Calendar.getInstance();
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int StopDayOfMonth = 0;
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if(dpdEnabled() == 1) {
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StopDayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);
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if((prevStartHr > prevStopHr) ||
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((prevStartHr == prevStopHr) && (prevStartMin > prevStopMin)))
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StopDayOfMonth = StopDayOfMonth + 1;
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Time NowTime = new Time();
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NowTime.setToNow();
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Time StartTime = new Time();
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StartTime.set(calendar.get(Calendar.SECOND),
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prevStartMin,
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prevStartHr,
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calendar.get(Calendar.DAY_OF_MONTH),
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calendar.get(Calendar.MONTH),
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calendar.get(Calendar.YEAR));
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Time StopTime = new Time();
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StopTime.set(calendar.get(Calendar.SECOND),
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prevStopMin,
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prevStopHr,
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StopDayOfMonth,
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calendar.get(Calendar.MONTH),
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calendar.get(Calendar.YEAR));
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if(NowTime.after(StartTime) && NowTime.before(StopTime))
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DPD_START = true;
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else
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DPD_START = false;
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}
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else {
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DPD_START = false;
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}
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}
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private int enableUnstableMemory(boolean flag) {
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Log.w(TAG, "Enable Unstable Memory : " + flag);
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if (flag) {
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if(mState == DMM_MEM_STATE.DISABLED) {
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if(Power.SetUnstableMemoryState(flag) < 0)
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Log.e(TAG, "Activating Unstable Memory: Failed !");
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else
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mState = DMM_MEM_STATE.ACTIVE;
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}
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} else {
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if(mState == DMM_MEM_STATE.ACTIVE) {
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if(Power.SetUnstableMemoryState(flag) < 0)
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Log.e(TAG, "Disabling Unstable Memory: Failed !");
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else
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mState = DMM_MEM_STATE.DISABLED;
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}
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}
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return 0;
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}
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}
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