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 17182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinskipackage com.android.server.storage; 18182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 19182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinskiimport com.android.server.EventLogTags; 20182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinskiimport com.android.server.SystemService; 21eeea67b8c3678d882d3774edc41242c63daa60faFyodor Kupolovimport com.android.server.pm.InstructionSets; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.app.Notification; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.app.NotificationManager; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.app.PendingIntent; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.ContentResolver; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Intent; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.pm.IPackageDataObserver; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.pm.IPackageManager; 30197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackbornimport android.content.pm.PackageManager; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Binder; 32f882efadd378e0476b7362e474f3a20dcf1c0d27Dianne Hackbornimport android.os.Environment; 334b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkeyimport android.os.FileObserver; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Handler; 35182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinskiimport android.os.IBinder; 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Message; 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.RemoteException; 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.ServiceManager; 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.StatFs; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.SystemClock; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.SystemProperties; 425ac72a29593ab9a20337a2225df52bdf4754be02Dianne Hackbornimport android.os.UserHandle; 43be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkeyimport android.os.storage.StorageManager; 4443866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongkerimport android.provider.Settings; 45197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackbornimport android.text.format.Formatter; 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.EventLog; 478a9b22056b13477f59df934928c00c58b5871c95Joe Onoratoimport android.util.Slog; 48197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackbornimport android.util.TimeUtils; 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 50be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkeyimport java.io.File; 51be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkeyimport java.io.FileDescriptor; 52be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkeyimport java.io.PrintWriter; 53be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey 54a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstromimport dalvik.system.VMRuntime; 55a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 5743866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * This class implements a service to monitor the amount of disk 5843866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * storage space on the device. If the free storage on device is less 5943866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * than a tunable threshold value (a secure settings parameter; 6043866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * default 10%) a low memory notification is displayed to alert the 6143866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * user. If the user clicks on the low memory notification the 6243866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * Application Manager application gets launched to let the user free 6343866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * storage space. 6443866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * 6543866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * Event log events: A low memory event with the free storage on 6643866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * device in bytes is logged to the event log when the device goes low 6743866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * on storage space. The amount of free storage on the device is 6843866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * periodically logged to the event log. The log interval is a secure 6943866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * settings parameter with a default value of 12 hours. When the free 7043866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * storage differential goes below a threshold (again a secure 7143866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * settings parameter with a default value of 2MB), the free memory is 7243866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker * logged to the event log. 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 74182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinskipublic class DeviceStorageMonitorService extends SystemService { 75182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski static final String TAG = "DeviceStorageMonitorService"; 76be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey 77529f91fc8e7e884ef19bef8eb3e4e3a1d69336f4Jeff Sharkey // TODO: extend to watch and manage caches on all private volumes 78529f91fc8e7e884ef19bef8eb3e4e3a1d69336f4Jeff Sharkey 79182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski static final boolean DEBUG = false; 80182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski static final boolean localLOGV = false; 81be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey 82182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski static final int DEVICE_MEMORY_WHAT = 1; 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int MONITOR_INTERVAL = 1; //in minutes 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int LOW_MEMORY_NOTIFICATION_ID = 1; 85be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int DEFAULT_FREE_STORAGE_LOG_INTERVAL_IN_MINUTES = 12*60; //in minutes 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final long DEFAULT_DISK_FREE_CHANGE_REPORTING_THRESHOLD = 2 * 1024 * 1024; // 2MB 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final long DEFAULT_CHECK_INTERVAL = MONITOR_INTERVAL*60*1000; 89be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey 903161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private long mFreeMem; // on /data 91197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn private long mFreeMemAfterLastCacheClear; // on /data 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private long mLastReportedFreeMem; 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private long mLastReportedFreeMemTime; 94182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski boolean mLowMemFlag=false; 95bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby private boolean mMemFullFlag=false; 96a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom private final boolean mIsBootImageOnDisk; 97b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown private final ContentResolver mResolver; 98b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown private final long mTotalMemory; // on /data 99b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown private final StatFs mDataFileStats; 100b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown private final StatFs mSystemFileStats; 101b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown private final StatFs mCacheFileStats; 102be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey 103be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey private static final File DATA_PATH = Environment.getDataDirectory(); 104be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey private static final File SYSTEM_PATH = Environment.getRootDirectory(); 105be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey private static final File CACHE_PATH = Environment.getDownloadCacheDirectory(); 106be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey 1073161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker private long mThreadStartTime = -1; 108182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski boolean mClearSucceeded = false; 109182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski boolean mClearingCache; 110b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown private final Intent mStorageLowIntent; 111b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown private final Intent mStorageOkIntent; 112b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown private final Intent mStorageFullIntent; 113b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown private final Intent mStorageNotFullIntent; 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CachePackageDataObserver mClearCacheObserver; 115182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private CacheFileDeletedObserver mCacheFileDeletedObserver; 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int _TRUE = 1; 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int _FALSE = 0; 118197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // This is the raw threshold that has been set at which we consider 119197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // storage to be low. 120182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski long mMemLowThreshold; 121197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // This is the threshold at which we start trying to flush caches 122197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // to get below the low threshold limit. It is less than the low 123197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // threshold; we will allow storage to get a bit beyond the limit 124197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // before flushing and checking if we are actually low. 125197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn private long mMemCacheStartTrimThreshold; 126197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // This is the threshold that we try to get to when deleting cache 127197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // files. This is greater than the low threshold so that we will flush 128197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // more files than absolutely needed, to reduce the frequency that 129197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // flushing takes place. 130197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn private long mMemCacheTrimToThreshold; 131be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey private long mMemFullThreshold; 1323161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This string is used for ServiceManager access to this class. 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 136182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski static final String SERVICE = "devicestoragemonitor"; 1373161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1393161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker * Handler that checks the amount of disk space on the device and sends a 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * notification if the device runs low on disk space 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 142b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown private final Handler mHandler = new Handler() { 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void handleMessage(Message msg) { 145bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby //don't handle an invalid message 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (msg.what != DEVICE_MEMORY_WHAT) { 1478a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.e(TAG, "Will not process invalid message"); 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkMemory(msg.arg1 == _TRUE); 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 1533161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 154182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private class CachePackageDataObserver extends IPackageDataObserver.Stub { 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onRemoveCompleted(String packageName, boolean succeeded) { 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearSucceeded = succeeded; 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearingCache = false; 1588a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.i(TAG, " Clear succeeded:"+mClearSucceeded 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project +", mClearingCache:"+mClearingCache+" Forcing memory check"); 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project postCheckMemoryMsg(false, 0); 1613161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1633161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 164182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private void restatDataDir() { 1653161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker try { 166be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey mDataFileStats.restat(DATA_PATH.getAbsolutePath()); 1673161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mFreeMem = (long) mDataFileStats.getAvailableBlocks() * 1683161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mDataFileStats.getBlockSize(); 1693161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } catch (IllegalArgumentException e) { 1703161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker // use the old value of mFreeMem 1713161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Allow freemem to be overridden by debug.freemem for testing 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String debugFreeMem = SystemProperties.get("debug.freemem"); 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!"".equals(debugFreeMem)) { 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFreeMem = Long.parseLong(debugFreeMem); 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17743866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker // Read the log interval from secure settings 178be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey long freeMemLogInterval = Settings.Global.getLong(mResolver, 179625239a05401bbf18b04d9874cea3f82da7c29a1Jeff Sharkey Settings.Global.SYS_FREE_STORAGE_LOG_INTERVAL, 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project DEFAULT_FREE_STORAGE_LOG_INTERVAL_IN_MINUTES)*60*1000; 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //log the amount of free memory in event log 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long currTime = SystemClock.elapsedRealtime(); 1833161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker if((mLastReportedFreeMemTime == 0) || 1843161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker (currTime-mLastReportedFreeMemTime) >= freeMemLogInterval) { 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastReportedFreeMemTime = currTime; 1863161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker long mFreeSystem = -1, mFreeCache = -1; 1873161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker try { 188be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey mSystemFileStats.restat(SYSTEM_PATH.getAbsolutePath()); 1893161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mFreeSystem = (long) mSystemFileStats.getAvailableBlocks() * 1903161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mSystemFileStats.getBlockSize(); 1913161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } catch (IllegalArgumentException e) { 1923161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker // ignore; report -1 1933161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } 1943161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker try { 195be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey mCacheFileStats.restat(CACHE_PATH.getAbsolutePath()); 1963161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mFreeCache = (long) mCacheFileStats.getAvailableBlocks() * 1973161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mCacheFileStats.getBlockSize(); 1983161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } catch (IllegalArgumentException e) { 1993161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker // ignore; report -1 2003161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } 201ab5c49c7e7f5f61040650109a76f38a443fb852dDoug Zongker EventLog.writeEvent(EventLogTags.FREE_STORAGE_LEFT, 2023161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker mFreeMem, mFreeSystem, mFreeCache); 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20443866e0c48bb0effe8805afd62b253e50ca7d591Doug Zongker // Read the reporting threshold from secure settings 205be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey long threshold = Settings.Global.getLong(mResolver, 206625239a05401bbf18b04d9874cea3f82da7c29a1Jeff Sharkey Settings.Global.DISK_FREE_CHANGE_REPORTING_THRESHOLD, 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project DEFAULT_DISK_FREE_CHANGE_REPORTING_THRESHOLD); 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If mFree changed significantly log the new value 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long delta = mFreeMem - mLastReportedFreeMem; 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta > threshold || delta < -threshold) { 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastReportedFreeMem = mFreeMem; 212ab5c49c7e7f5f61040650109a76f38a443fb852dDoug Zongker EventLog.writeEvent(EventLogTags.FREE_STORAGE_CHANGED, mFreeMem); 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2153161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 216182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private void clearCache() { 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mClearCacheObserver == null) { 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Lazy instantiation 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearCacheObserver = new CachePackageDataObserver(); 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearingCache = true; 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 2238a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if (localLOGV) Slog.i(TAG, "Clearing cache"); 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project IPackageManager.Stub.asInterface(ServiceManager.getService("package")). 225529f91fc8e7e884ef19bef8eb3e4e3a1d69336f4Jeff Sharkey freeStorageAndNotify(null, mMemCacheTrimToThreshold, mClearCacheObserver); 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (RemoteException e) { 2278a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.w(TAG, "Failed to get handle for PackageManger Exception: "+e); 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearingCache = false; 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClearSucceeded = false; 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2323161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 233182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski void checkMemory(boolean checkCache) { 2343161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker //if the thread that was started to clear cache is still running do nothing till its 2353161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker //finished clearing cache. Ideally this flag could be modified by clearCache 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and should be accessed via a lock but even if it does this test will fail now and 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //hopefully the next time this flag will be set to the correct value. 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if(mClearingCache) { 2398a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.i(TAG, "Thread already running just skip"); 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //make sure the thread is not hung for too long 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long diffTime = System.currentTimeMillis() - mThreadStartTime; 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if(diffTime > (10*60*1000)) { 2438a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.w(TAG, "Thread that clears cache file seems to run for ever"); 2443161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker } 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project restatDataDir(); 2478a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if (localLOGV) Slog.v(TAG, "freeMemory="+mFreeMem); 2483161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //post intent to NotificationManager to display icon if necessary 250bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if (mFreeMem < mMemLowThreshold) { 251197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn if (checkCache) { 252197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // We are allowed to clear cache files at this point to 253197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // try to get down below the limit, because this is not 254197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // the initial call after a cache clear has been attempted. 255197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // In this case we will try a cache clear if our free 256197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // space has gone below the cache clear limit. 257197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn if (mFreeMem < mMemCacheStartTrimThreshold) { 258197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // We only clear the cache if the free storage has changed 259197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // a significant amount since the last time. 260197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn if ((mFreeMemAfterLastCacheClear-mFreeMem) 261197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn >= ((mMemLowThreshold-mMemCacheStartTrimThreshold)/4)) { 262197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // See if clearing cache helps 263197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // Note that clearing cache is asynchronous and so we do a 264197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // memory check again once the cache has been cleared. 265197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn mThreadStartTime = System.currentTimeMillis(); 266197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn mClearSucceeded = false; 267197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn clearCache(); 268197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn } 269197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn } 270197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn } else { 271197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // This is a call from after clearing the cache. Note 272197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // the amount of free storage at this point. 273197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn mFreeMemAfterLastCacheClear = mFreeMem; 274197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn if (!mLowMemFlag) { 275197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // We tried to clear the cache, but that didn't get us 276197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn // below the low storage limit. Tell the user. 2778a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.i(TAG, "Running low on memory. Sending notification"); 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sendNotification(); 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLowMemFlag = true; 280197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn } else { 281197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn if (localLOGV) Slog.v(TAG, "Running low on memory " + 282197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn "notification already sent. do nothing"); 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 286197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn mFreeMemAfterLastCacheClear = mFreeMem; 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mLowMemFlag) { 2888a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.i(TAG, "Memory available. Cancelling notification"); 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project cancelNotification(); 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLowMemFlag = false; 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 293a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom if (!mLowMemFlag && !mIsBootImageOnDisk) { 294a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom Slog.i(TAG, "No boot image on disk due to lack of space. Sending notification"); 295a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom sendNotification(); 296a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom } 297bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if (mFreeMem < mMemFullThreshold) { 298bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if (!mMemFullFlag) { 299bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby sendFullNotification(); 300bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mMemFullFlag = true; 301bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 302bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } else { 303bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if (mMemFullFlag) { 304bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby cancelFullNotification(); 305bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mMemFullFlag = false; 306bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 307bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3098a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.i(TAG, "Posting Message again"); 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //keep posting messages to itself periodically 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project postCheckMemoryMsg(true, DEFAULT_CHECK_INTERVAL); 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3133161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 314182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski void postCheckMemoryMsg(boolean clearCache, long delay) { 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remove queued messages 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.removeMessages(DEVICE_MEMORY_WHAT); 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.sendMessageDelayed(mHandler.obtainMessage(DEVICE_MEMORY_WHAT, 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project clearCache ?_TRUE : _FALSE, 0), 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delay); 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3213161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 322b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown public DeviceStorageMonitorService(Context context) { 323b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown super(context); 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastReportedFreeMemTime = 0; 325182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski mResolver = context.getContentResolver(); 326a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom mIsBootImageOnDisk = isBootImageOnDisk(); 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //create StatFs object 328be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey mDataFileStats = new StatFs(DATA_PATH.getAbsolutePath()); 329be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey mSystemFileStats = new StatFs(SYSTEM_PATH.getAbsolutePath()); 330be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey mCacheFileStats = new StatFs(CACHE_PATH.getAbsolutePath()); 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //initialize total storage on device 332197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn mTotalMemory = (long)mDataFileStats.getBlockCount() * 333197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn mDataFileStats.getBlockSize(); 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStorageLowIntent = new Intent(Intent.ACTION_DEVICE_STORAGE_LOW); 3354b3309211ed6f3532b44481945a4725143d50b8aJeff Hamilton mStorageLowIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStorageOkIntent = new Intent(Intent.ACTION_DEVICE_STORAGE_OK); 3374b3309211ed6f3532b44481945a4725143d50b8aJeff Hamilton mStorageOkIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 338bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mStorageFullIntent = new Intent(Intent.ACTION_DEVICE_STORAGE_FULL); 339bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mStorageFullIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 340bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mStorageNotFullIntent = new Intent(Intent.ACTION_DEVICE_STORAGE_NOT_FULL); 341bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby mStorageNotFullIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 342182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski } 343be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey 344a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom private static boolean isBootImageOnDisk() { 345eeea67b8c3678d882d3774edc41242c63daa60faFyodor Kupolov for (String instructionSet : InstructionSets.getAllDexCodeInstructionSets()) { 346a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom if (!VMRuntime.isBootClassPathOnDisk(instructionSet)) { 347a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom return false; 348a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom } 349a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom } 350a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom return true; 351a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom } 352a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom 353b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown /** 354b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown * Initializes the disk space threshold value and posts an empty message to 355b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown * kickstart the process. 356b880d880c6cd989eacc28c365fc9a41d31900da1Jeff Brown */ 357182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski @Override 358182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski public void onStart() { 359bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby // cache storage thresholds 360182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski final StorageManager sm = StorageManager.from(getContext()); 361be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey mMemLowThreshold = sm.getStorageLowBytes(DATA_PATH); 362be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey mMemFullThreshold = sm.getStorageFullBytes(DATA_PATH); 363be72215c39916af9ae42332260c04b696bc73d7fJeff Sharkey 364197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn mMemCacheStartTrimThreshold = ((mMemLowThreshold*3)+mMemFullThreshold)/4; 365197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn mMemCacheTrimToThreshold = mMemLowThreshold 366197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn + ((mMemLowThreshold-mMemCacheStartTrimThreshold)*2); 367197a0c82a1fbf337ec0a85d36b6b89c3d6e8a0acDianne Hackborn mFreeMemAfterLastCacheClear = mTotalMemory; 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkMemory(true); 3694b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey 3704b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey mCacheFileDeletedObserver = new CacheFileDeletedObserver(); 3714b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey mCacheFileDeletedObserver.startWatching(); 372182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 373182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski publishBinderService(SERVICE, mRemoteService); 374182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski publishLocalService(DeviceStorageMonitorInternal.class, mLocalService); 375182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski } 376182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 377182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private final DeviceStorageMonitorInternal mLocalService = new DeviceStorageMonitorInternal() { 378182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski @Override 379182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski public void checkMemory() { 380182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski // force an early check 381182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski postCheckMemoryMsg(true, 0); 382182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski } 383182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 384182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski @Override 385182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski public boolean isMemoryLow() { 386a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom return mLowMemFlag || !mIsBootImageOnDisk; 387182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski } 388182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 389182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski @Override 390182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski public long getMemoryLowThreshold() { 391182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski return mMemLowThreshold; 392182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski } 393182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski }; 394182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 395182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private final IBinder mRemoteService = new Binder() { 396182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski @Override 397182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 398182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski if (getContext().checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 399182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski != PackageManager.PERMISSION_GRANTED) { 400182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 401182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.println("Permission Denial: can't dump " + SERVICE + " from from pid=" 402182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski + Binder.getCallingPid() 403182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski + ", uid=" + Binder.getCallingUid()); 404182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski return; 405182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski } 406182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 407182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski dumpImpl(pw); 408182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski } 409182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski }; 410182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 411182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski void dumpImpl(PrintWriter pw) { 412182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski final Context context = getContext(); 413182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 414182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.println("Current DeviceStorageMonitor state:"); 415182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 416182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mFreeMem="); pw.print(Formatter.formatFileSize(context, mFreeMem)); 417182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mTotalMemory="); 418182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.println(Formatter.formatFileSize(context, mTotalMemory)); 419182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 420182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mFreeMemAfterLastCacheClear="); 421182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.println(Formatter.formatFileSize(context, mFreeMemAfterLastCacheClear)); 422182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 423182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mLastReportedFreeMem="); 424182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(Formatter.formatFileSize(context, mLastReportedFreeMem)); 425182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mLastReportedFreeMemTime="); 426182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski TimeUtils.formatDuration(mLastReportedFreeMemTime, SystemClock.elapsedRealtime(), pw); 427182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.println(); 428182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 429182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mLowMemFlag="); pw.print(mLowMemFlag); 430182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mMemFullFlag="); pw.println(mMemFullFlag); 431a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom pw.print(" mIsBootImageOnDisk="); pw.print(mIsBootImageOnDisk); 432182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 433182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mClearSucceeded="); pw.print(mClearSucceeded); 434182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mClearingCache="); pw.println(mClearingCache); 435182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 436182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mMemLowThreshold="); 437182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(Formatter.formatFileSize(context, mMemLowThreshold)); 438182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mMemFullThreshold="); 439182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.println(Formatter.formatFileSize(context, mMemFullThreshold)); 440182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski 441182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mMemCacheStartTrimThreshold="); 442182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(Formatter.formatFileSize(context, mMemCacheStartTrimThreshold)); 443182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.print(" mMemCacheTrimToThreshold="); 444182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski pw.println(Formatter.formatFileSize(context, mMemCacheTrimToThreshold)); 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4463161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This method sends a notification to NotificationManager to display 4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * an error dialog indicating low disk space and launch the Installer 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * application 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 452182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private void sendNotification() { 453182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski final Context context = getContext(); 4548a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.i(TAG, "Sending low memory notification"); 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //log the event to event log with the amount of free storage(in bytes) left on the device 456ab5c49c7e7f5f61040650109a76f38a443fb852dDoug Zongker EventLog.writeEvent(EventLogTags.LOW_STORAGE, mFreeMem); 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pack up the values and broadcast them to everyone 458f882efadd378e0476b7362e474f3a20dcf1c0d27Dianne Hackborn Intent lowMemIntent = new Intent(Environment.isExternalStorageEmulated() 459f882efadd378e0476b7362e474f3a20dcf1c0d27Dianne Hackborn ? Settings.ACTION_INTERNAL_STORAGE_SETTINGS 460f882efadd378e0476b7362e474f3a20dcf1c0d27Dianne Hackborn : Intent.ACTION_MANAGE_PACKAGE_STORAGE); 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lowMemIntent.putExtra("memory", mFreeMem); 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project lowMemIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 4633161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker NotificationManager mNotificationMgr = 464182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski (NotificationManager)context.getSystemService( 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Context.NOTIFICATION_SERVICE); 466182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski CharSequence title = context.getText( 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.string.low_internal_storage_view_title); 468a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom CharSequence details = context.getText(mIsBootImageOnDisk 469a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom ? com.android.internal.R.string.low_internal_storage_view_text 470a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom : com.android.internal.R.string.low_internal_storage_view_text_no_boot); 471182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski PendingIntent intent = PendingIntent.getActivityAsUser(context, 0, lowMemIntent, 0, 47250cdf7c3069eb2cf82acbad73c322b7a5f3af4b1Dianne Hackborn null, UserHandle.CURRENT); 473a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom Notification notification = new Notification.Builder(context) 474a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom .setSmallIcon(com.android.internal.R.drawable.stat_notify_disk_full) 475a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom .setTicker(title) 4764a357cd2e55293402d7172766f7f9419815fc1e8Alan Viverette .setColor(context.getColor( 477a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom com.android.internal.R.color.system_notification_accent_color)) 478a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom .setContentTitle(title) 479a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom .setContentText(details) 480a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom .setContentIntent(intent) 481a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom .setStyle(new Notification.BigTextStyle() 482a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom .bigText(details)) 483a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom .setVisibility(Notification.VISIBILITY_PUBLIC) 484a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom .setCategory(Notification.CATEGORY_SYSTEM) 485a39871ef5e9bf6703f18af0725484b06f5c78216Brian Carlstrom .build(); 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project notification.flags |= Notification.FLAG_NO_CLEAR; 48750cdf7c3069eb2cf82acbad73c322b7a5f3af4b1Dianne Hackborn mNotificationMgr.notifyAsUser(null, LOW_MEMORY_NOTIFICATION_ID, notification, 48850cdf7c3069eb2cf82acbad73c322b7a5f3af4b1Dianne Hackborn UserHandle.ALL); 489182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski context.sendStickyBroadcastAsUser(mStorageLowIntent, UserHandle.ALL); 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Cancels low storage notification and sends OK intent. 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 495182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private void cancelNotification() { 496182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski final Context context = getContext(); 4978a9b22056b13477f59df934928c00c58b5871c95Joe Onorato if(localLOGV) Slog.i(TAG, "Canceling low memory notification"); 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project NotificationManager mNotificationMgr = 499182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski (NotificationManager)context.getSystemService( 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Context.NOTIFICATION_SERVICE); 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //cancel notification since memory has been freed 50250cdf7c3069eb2cf82acbad73c322b7a5f3af4b1Dianne Hackborn mNotificationMgr.cancelAsUser(null, LOW_MEMORY_NOTIFICATION_ID, UserHandle.ALL); 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 504182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski context.removeStickyBroadcastAsUser(mStorageLowIntent, UserHandle.ALL); 505182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski context.sendBroadcastAsUser(mStorageOkIntent, UserHandle.ALL); 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5073161795b2353171bb0636fb3ea6dab7dec80a4f4Doug Zongker 508bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby /** 509bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby * Send a notification when storage is full. 510bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby */ 511182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private void sendFullNotification() { 512bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if(localLOGV) Slog.i(TAG, "Sending memory full notification"); 513182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski getContext().sendStickyBroadcastAsUser(mStorageFullIntent, UserHandle.ALL); 514bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 515bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby 516bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby /** 517bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby * Cancels memory full notification and sends "not full" intent. 518bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby */ 519182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private void cancelFullNotification() { 520bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby if(localLOGV) Slog.i(TAG, "Canceling memory full notification"); 521182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski getContext().removeStickyBroadcastAsUser(mStorageFullIntent, UserHandle.ALL); 522182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski getContext().sendBroadcastAsUser(mStorageNotFullIntent, UserHandle.ALL); 523bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby } 524bb3716332321e22537a5015be13e2229fb9b90bcJake Hamby 525182f73fc4da13a6417e5086ec9ecce80eb8423caAdam Lesinski private static class CacheFileDeletedObserver extends FileObserver { 5264b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey public CacheFileDeletedObserver() { 5274b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey super(Environment.getDownloadCacheDirectory().getAbsolutePath(), FileObserver.DELETE); 5284b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey } 5294b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey 5304b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey @Override 5314b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey public void onEvent(int event, String path) { 5324b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey EventLogTags.writeCacheFileDeleted(path); 5334b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey } 5344b49657c7f78f8cee30804f8b31a004a11fffd7fJeff Sharkey } 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 536