19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2007-2008 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage com.android.server; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.app.Notification; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.app.NotificationManager; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.app.PendingIntent; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.ContentResolver; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Intent; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.pm.IPackageDataObserver; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.pm.IPackageManager; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Binder; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Handler; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Message; 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Process; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.RemoteException; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.ServiceManager; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.StatFs; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.SystemClock; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.SystemProperties; 3643866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongkerimport android.provider.Settings; 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.EventLog; 388a9b22056b13477f59df934928c00c58b5871c95Joe Onoratoimport android.util.Slog; 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 4143866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * This class implements a service to monitor the amount of disk 4243866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * storage space on the device. If the free storage on device is less 4343866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * than a tunable threshold value (a secure settings parameter; 4443866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * default 10%) a low memory notification is displayed to alert the 4543866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * user. If the user clicks on the low memory notification the 4643866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * Application Manager application gets launched to let the user free 4743866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * storage space. 4843866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * 4943866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * Event log events: A low memory event with the free storage on 5043866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * device in bytes is logged to the event log when the device goes low 5143866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * on storage space. The amount of free storage on the device is 5243866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * periodically logged to the event log. The log interval is a secure 5343866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * settings parameter with a default value of 12 hours. When the free 5443866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * storage differential goes below a threshold (again a secure 5543866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * settings parameter with a default value of 2MB), the free memory is 5643866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * logged to the event log. 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 58cf0b38ca6e5aa5efded7dbdbb623f6cd2746c96aKenny Rootpublic class DeviceStorageMonitorService extends Binder { 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final String TAG = "DeviceStorageMonitorService"; 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final boolean DEBUG = false; 6143a17654cf4bfe7f1ec22bd8b7b32daccdf27c09Joe Onorato private static final boolean localLOGV = false; 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DEVICE_MEMORY_WHAT = 1; 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int MONITOR_INTERVAL = 1; //in minutes 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int LOW_MEMORY_NOTIFICATION_ID = 1; 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DEFAULT_THRESHOLD_PERCENTAGE = 10; 66247fe74c934cb3fba85aae7e051a8044f460fb11Dianne Hackborn private static final int DEFAULT_THRESHOLD_MAX_BYTES = 500*1024*1024; // 500MB 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DEFAULT_FREE_STORAGE_LOG_INTERVAL_IN_MINUTES = 12*60; //in minutes 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final long DEFAULT_DISK_FREE_CHANGE_REPORTING_THRESHOLD = 2 * 1024 * 1024; // 2MB 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final long DEFAULT_CHECK_INTERVAL = MONITOR_INTERVAL*60*1000; 70bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby private static final int DEFAULT_FULL_THRESHOLD_BYTES = 1024*1024; // 1MB 713161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private long mFreeMem; // on /data 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private long mLastReportedFreeMem; 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private long mLastReportedFreeMemTime; 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mLowMemFlag=false; 75bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby private boolean mMemFullFlag=false; 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Context mContext; 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ContentResolver mContentResolver; 783161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private long mTotalMemory; // on /data 793161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private StatFs mDataFileStats; 803161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private StatFs mSystemFileStats; 813161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private StatFs mCacheFileStats; 823161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private static final String DATA_PATH = "/data"; 833161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private static final String SYSTEM_PATH = "/system"; 843161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private static final String CACHE_PATH = "/cache"; 853161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private long mThreadStartTime = -1; 863161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private boolean mClearSucceeded = false; 873161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private boolean mClearingCache; 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Intent mStorageLowIntent; 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Intent mStorageOkIntent; 90bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby private Intent mStorageFullIntent; 91bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby private Intent mStorageNotFullIntent; 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CachePackageDataObserver mClearCacheObserver; 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int _TRUE = 1; 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int _FALSE = 0; 95bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby private long mMemLowThreshold; 96bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby private int mMemFullThreshold; 973161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This string is used for ServiceManager access to this class. 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 101cf0b38ca6e5aa5efded7dbdbb623f6cd2746c96aKenny Root public static final String SERVICE = "devicestoragemonitor"; 1023161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1043161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker * Handler that checks the amount of disk space on the device and sends a 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * notification if the device runs low on disk space 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Handler mHandler = new Handler() { 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void handleMessage(Message msg) { 110bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby //don't handle an invalid message 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (msg.what != DEVICE_MEMORY_WHAT) { 1128a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.e(TAG, "Will not process invalid message"); 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkMemory(msg.arg1 == _TRUE); 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 1183161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project class CachePackageDataObserver extends IPackageDataObserver.Stub { 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onRemoveCompleted(String packageName, boolean succeeded) { 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearSucceeded = succeeded; 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearingCache = false; 1238a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.i(TAG, " Clear succeeded:"+mClearSucceeded 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project +", mClearingCache:"+mClearingCache+" Forcing memory check"); 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project postCheckMemoryMsg(false, 0); 1263161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1283161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final void restatDataDir() { 1303161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker try { 1313161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mDataFileStats.restat(DATA_PATH); 1323161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mFreeMem = (long) mDataFileStats.getAvailableBlocks() * 1333161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mDataFileStats.getBlockSize(); 1343161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } catch (IllegalArgumentException e) { 1353161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker // use the old value of mFreeMem 1363161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Allow freemem to be overridden by debug.freemem for testing 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String debugFreeMem = SystemProperties.get("debug.freemem"); 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!"".equals(debugFreeMem)) { 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFreeMem = Long.parseLong(debugFreeMem); 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14243866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker // Read the log interval from secure settings 14343866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker long freeMemLogInterval = Settings.Secure.getLong(mContentResolver, 14443866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker Settings.Secure.SYS_FREE_STORAGE_LOG_INTERVAL, 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project DEFAULT_FREE_STORAGE_LOG_INTERVAL_IN_MINUTES)*60*1000; 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //log the amount of free memory in event log 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long currTime = SystemClock.elapsedRealtime(); 1483161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker if((mLastReportedFreeMemTime == 0) || 1493161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker (currTime-mLastReportedFreeMemTime) >= freeMemLogInterval) { 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastReportedFreeMemTime = currTime; 1513161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker long mFreeSystem = -1, mFreeCache = -1; 1523161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker try { 1533161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mSystemFileStats.restat(SYSTEM_PATH); 1543161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mFreeSystem = (long) mSystemFileStats.getAvailableBlocks() * 1553161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mSystemFileStats.getBlockSize(); 1563161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } catch (IllegalArgumentException e) { 1573161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker // ignore; report -1 1583161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } 1593161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker try { 1603161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mCacheFileStats.restat(CACHE_PATH); 1613161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mFreeCache = (long) mCacheFileStats.getAvailableBlocks() * 1623161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mCacheFileStats.getBlockSize(); 1633161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } catch (IllegalArgumentException e) { 1643161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker // ignore; report -1 1653161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } 166ab5c49c7e7f5f61040650109a76f38a443fb852dDoug Zongker EventLog.writeEvent(EventLogTags.FREE_STORAGE_LEFT, 1673161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mFreeMem, mFreeSystem, mFreeCache); 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16943866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker // Read the reporting threshold from secure settings 17043866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker long threshold = Settings.Secure.getLong(mContentResolver, 17143866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker Settings.Secure.DISK_FREE_CHANGE_REPORTING_THRESHOLD, 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project DEFAULT_DISK_FREE_CHANGE_REPORTING_THRESHOLD); 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If mFree changed significantly log the new value 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long delta = mFreeMem - mLastReportedFreeMem; 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta > threshold || delta < -threshold) { 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastReportedFreeMem = mFreeMem; 177ab5c49c7e7f5f61040650109a76f38a443fb852dDoug Zongker EventLog.writeEvent(EventLogTags.FREE_STORAGE_CHANGED, mFreeMem); 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1803161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final void clearCache() { 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mClearCacheObserver == null) { 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Lazy instantiation 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearCacheObserver = new CachePackageDataObserver(); 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearingCache = true; 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1888a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if (localLOGV) Slog.i(TAG, "Clearing cache"); 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project IPackageManager.Stub.asInterface(ServiceManager.getService("package")). 190bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby freeStorageAndNotify(mMemLowThreshold, mClearCacheObserver); 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (RemoteException e) { 1928a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.w(TAG, "Failed to get handle for PackageManger Exception: "+e); 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearingCache = false; 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearSucceeded = false; 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1973161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final void checkMemory(boolean checkCache) { 1993161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker //if the thread that was started to clear cache is still running do nothing till its 2003161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker //finished clearing cache. Ideally this flag could be modified by clearCache 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and should be accessed via a lock but even if it does this test will fail now and 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //hopefully the next time this flag will be set to the correct value. 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if(mClearingCache) { 2048a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.i(TAG, "Thread already running just skip"); 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //make sure the thread is not hung for too long 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long diffTime = System.currentTimeMillis() - mThreadStartTime; 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if(diffTime > (10*60*1000)) { 2088a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.w(TAG, "Thread that clears cache file seems to run for ever"); 2093161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project restatDataDir(); 2128a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if (localLOGV) Slog.v(TAG, "freeMemory="+mFreeMem); 2133161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //post intent to NotificationManager to display icon if necessary 215bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if (mFreeMem < mMemLowThreshold) { 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mLowMemFlag) { 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (checkCache) { 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See if clearing cache helps 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Note that clearing cache is asynchronous and so we do a 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // memory check again once the cache has been cleared. 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mThreadStartTime = System.currentTimeMillis(); 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearSucceeded = false; 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project clearCache(); 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2258a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.i(TAG, "Running low on memory. Sending notification"); 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sendNotification(); 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLowMemFlag = true; 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2308a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if (localLOGV) Slog.v(TAG, "Running low on memory " + 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "notification already sent. do nothing"); 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mLowMemFlag) { 2358a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.i(TAG, "Memory available. Cancelling notification"); 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project cancelNotification(); 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLowMemFlag = false; 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 240bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if (mFreeMem < mMemFullThreshold) { 241bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if (!mMemFullFlag) { 242bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby sendFullNotification(); 243bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mMemFullFlag = true; 244bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 245bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } else { 246bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if (mMemFullFlag) { 247bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby cancelFullNotification(); 248bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mMemFullFlag = false; 249bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 250bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2528a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.i(TAG, "Posting Message again"); 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //keep posting messages to itself periodically 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project postCheckMemoryMsg(true, DEFAULT_CHECK_INTERVAL); 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2563161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void postCheckMemoryMsg(boolean clearCache, long delay) { 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remove queued messages 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.removeMessages(DEVICE_MEMORY_WHAT); 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.sendMessageDelayed(mHandler.obtainMessage(DEVICE_MEMORY_WHAT, 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project clearCache ?_TRUE : _FALSE, 0), 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delay); 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2643161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 2663161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker * just query settings to retrieve the memory threshold. 26743866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * Preferred this over using a ContentObserver since Settings.Secure caches the value 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * any way 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private long getMemThreshold() { 271247fe74c934cb3fba85aae7e051a8044f460fb11Dianne Hackborn long value = Settings.Secure.getInt( 2723161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mContentResolver, 27343866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker Settings.Secure.SYS_STORAGE_THRESHOLD_PERCENTAGE, 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project DEFAULT_THRESHOLD_PERCENTAGE); 2758a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.v(TAG, "Threshold Percentage="+value); 276247fe74c934cb3fba85aae7e051a8044f460fb11Dianne Hackborn value *= mTotalMemory; 277247fe74c934cb3fba85aae7e051a8044f460fb11Dianne Hackborn long maxValue = Settings.Secure.getInt( 278247fe74c934cb3fba85aae7e051a8044f460fb11Dianne Hackborn mContentResolver, 279247fe74c934cb3fba85aae7e051a8044f460fb11Dianne Hackborn Settings.Secure.SYS_STORAGE_THRESHOLD_MAX_BYTES, 280247fe74c934cb3fba85aae7e051a8044f460fb11Dianne Hackborn DEFAULT_THRESHOLD_MAX_BYTES); 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //evaluate threshold value 282247fe74c934cb3fba85aae7e051a8044f460fb11Dianne Hackborn return value < maxValue ? value : maxValue; 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 285bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby /* 286bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby * just query settings to retrieve the memory full threshold. 287bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby * Preferred this over using a ContentObserver since Settings.Secure caches the value 288bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby * any way 289bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby */ 290bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby private int getMemFullThreshold() { 291bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby int value = Settings.Secure.getInt( 292bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mContentResolver, 293bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby Settings.Secure.SYS_STORAGE_FULL_THRESHOLD_BYTES, 294bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby DEFAULT_FULL_THRESHOLD_BYTES); 295bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if(localLOGV) Slog.v(TAG, "Full Threshold Bytes="+value); 296bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby return value; 297bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 298bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Constructor to run service. initializes the disk space threshold value 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and posts an empty message to kickstart the process. 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public DeviceStorageMonitorService(Context context) { 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastReportedFreeMemTime = 0; 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mContext = context; 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mContentResolver = mContext.getContentResolver(); 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //create StatFs object 3083161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mDataFileStats = new StatFs(DATA_PATH); 3093161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mSystemFileStats = new StatFs(SYSTEM_PATH); 3103161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mCacheFileStats = new StatFs(CACHE_PATH); 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //initialize total storage on device 3123161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mTotalMemory = ((long)mDataFileStats.getBlockCount() * 3133161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mDataFileStats.getBlockSize())/100L; 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStorageLowIntent = new Intent(Intent.ACTION_DEVICE_STORAGE_LOW); 3154b3309211ed6f3532b44481945a4725143d50b8aJeff Hamilton mStorageLowIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStorageOkIntent = new Intent(Intent.ACTION_DEVICE_STORAGE_OK); 3174b3309211ed6f3532b44481945a4725143d50b8aJeff Hamilton mStorageOkIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 318bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mStorageFullIntent = new Intent(Intent.ACTION_DEVICE_STORAGE_FULL); 319bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mStorageFullIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 320bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mStorageNotFullIntent = new Intent(Intent.ACTION_DEVICE_STORAGE_NOT_FULL); 321bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mStorageNotFullIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 322bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby // cache storage thresholds 323bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mMemLowThreshold = getMemThreshold(); 324bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mMemFullThreshold = getMemFullThreshold(); 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkMemory(true); 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3273161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This method sends a notification to NotificationManager to display 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * an error dialog indicating low disk space and launch the Installer 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * application 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final void sendNotification() { 3358a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.i(TAG, "Sending low memory notification"); 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //log the event to event log with the amount of free storage(in bytes) left on the device 337ab5c49c7e7f5f61040650109a76f38a443fb852dDoug Zongker EventLog.writeEvent(EventLogTags.LOW_STORAGE, mFreeMem); 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pack up the values and broadcast them to everyone 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Intent lowMemIntent = new Intent(Intent.ACTION_MANAGE_PACKAGE_STORAGE); 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lowMemIntent.putExtra("memory", mFreeMem); 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lowMemIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 3423161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker NotificationManager mNotificationMgr = 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (NotificationManager)mContext.getSystemService( 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Context.NOTIFICATION_SERVICE); 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CharSequence title = mContext.getText( 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.string.low_internal_storage_view_title); 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CharSequence details = mContext.getText( 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.string.low_internal_storage_view_text); 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project PendingIntent intent = PendingIntent.getActivity(mContext, 0, lowMemIntent, 0); 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Notification notification = new Notification(); 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project notification.icon = com.android.internal.R.drawable.stat_notify_disk_full; 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project notification.tickerText = title; 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project notification.flags |= Notification.FLAG_NO_CLEAR; 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project notification.setLatestEventInfo(mContext, title, details, intent); 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNotificationMgr.notify(LOW_MEMORY_NOTIFICATION_ID, notification); 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mContext.sendStickyBroadcast(mStorageLowIntent); 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Cancels low storage notification and sends OK intent. 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final void cancelNotification() { 3638a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.i(TAG, "Canceling low memory notification"); 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project NotificationManager mNotificationMgr = 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (NotificationManager)mContext.getSystemService( 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Context.NOTIFICATION_SERVICE); 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //cancel notification since memory has been freed 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNotificationMgr.cancel(LOW_MEMORY_NOTIFICATION_ID); 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mContext.removeStickyBroadcast(mStorageLowIntent); 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mContext.sendBroadcast(mStorageOkIntent); 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3733161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 374bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby /** 375bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby * Send a notification when storage is full. 376bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby */ 377bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby private final void sendFullNotification() { 378bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if(localLOGV) Slog.i(TAG, "Sending memory full notification"); 379bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mContext.sendStickyBroadcast(mStorageFullIntent); 380bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 381bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby 382bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby /** 383bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby * Cancels memory full notification and sends "not full" intent. 384bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby */ 385bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby private final void cancelFullNotification() { 386bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if(localLOGV) Slog.i(TAG, "Canceling memory full notification"); 387bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mContext.removeStickyBroadcast(mStorageFullIntent); 388bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mContext.sendBroadcast(mStorageNotFullIntent); 389bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 390bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void updateMemory() { 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int callingUid = getCallingUid(); 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if(callingUid != Process.SYSTEM_UID) { 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // force an early check 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project postCheckMemoryMsg(true, 0); 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 39962e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root 40062e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root /** 40162e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root * Callable from other things in the system service to obtain the low memory 40262e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root * threshold. 40362e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root * 40462e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root * @return low memory threshold in bytes 40562e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root */ 40662e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root public long getMemoryLowThreshold() { 40762e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root return mMemLowThreshold; 40862e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root } 40962e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root 41062e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root /** 41162e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root * Callable from other things in the system process to check whether memory 41262e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root * is low. 41362e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root * 41462e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root * @return true is memory is low 41562e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root */ 41662e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root public boolean isMemoryLow() { 41762e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root return mLowMemFlag; 41862e1b4e9d41a01db423b5e4684ecf529ed46106dKenny Root } 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 420