1621bc545982e2318e71bef3111d3cab39169d648Dan Egnor/* 2621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * Copyright (C) 2010 The Android Open Source Project 3621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * 4621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * Licensed under the Apache License, Version 2.0 (the "License"); 5621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * you may not use this file except in compliance with the License. 6621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * You may obtain a copy of the License at 7621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * 8621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * http://www.apache.org/licenses/LICENSE-2.0 9621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * 10621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * Unless required by applicable law or agreed to in writing, software 11621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * distributed under the License is distributed on an "AS IS" BASIS, 12621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * See the License for the specific language governing permissions and 14621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * limitations under the License. 15621bc545982e2318e71bef3111d3cab39169d648Dan Egnor */ 16621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 17621bc545982e2318e71bef3111d3cab39169d648Dan Egnorpackage com.android.server; 18621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 19621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport android.content.Context; 20621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport android.os.Binder; 21621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport android.os.Environment; 22621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport android.os.FileUtils; 23621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport android.os.StatFs; 24621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport android.os.SystemClock; 25621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 26621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport java.io.File; 27621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport java.io.FileDescriptor; 28621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport java.io.FileOutputStream; 29621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport java.io.IOException; 30621bc545982e2318e71bef3111d3cab39169d648Dan Egnorimport java.io.PrintWriter; 31621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 32621bc545982e2318e71bef3111d3cab39169d648Dan Egnor/** 33621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * This service exists only as a "dumpsys" target which reports 34621bc545982e2318e71bef3111d3cab39169d648Dan Egnor * statistics about the status of the disk. 35621bc545982e2318e71bef3111d3cab39169d648Dan Egnor */ 36621bc545982e2318e71bef3111d3cab39169d648Dan Egnorpublic class DiskStatsService extends Binder { 37eb4cc492c93ab9635dde78b958a834120412e72aJeff Sharkey private static final String TAG = "DiskStatsService"; 38eb4cc492c93ab9635dde78b958a834120412e72aJeff Sharkey 39621bc545982e2318e71bef3111d3cab39169d648Dan Egnor private final Context mContext; 40621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 41621bc545982e2318e71bef3111d3cab39169d648Dan Egnor public DiskStatsService(Context context) { 42621bc545982e2318e71bef3111d3cab39169d648Dan Egnor mContext = context; 43621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } 44621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 45621bc545982e2318e71bef3111d3cab39169d648Dan Egnor @Override 46621bc545982e2318e71bef3111d3cab39169d648Dan Egnor protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 47eb4cc492c93ab9635dde78b958a834120412e72aJeff Sharkey mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DUMP, TAG); 48621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 49621bc545982e2318e71bef3111d3cab39169d648Dan Egnor // Run a quick-and-dirty performance test: write 512 bytes 50621bc545982e2318e71bef3111d3cab39169d648Dan Egnor byte[] junk = new byte[512]; 51621bc545982e2318e71bef3111d3cab39169d648Dan Egnor for (int i = 0; i < junk.length; i++) junk[i] = (byte) i; // Write nonzero bytes 52621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 53621bc545982e2318e71bef3111d3cab39169d648Dan Egnor File tmp = new File(Environment.getDataDirectory(), "system/perftest.tmp"); 54621bc545982e2318e71bef3111d3cab39169d648Dan Egnor FileOutputStream fos = null; 55621bc545982e2318e71bef3111d3cab39169d648Dan Egnor IOException error = null; 56621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 57621bc545982e2318e71bef3111d3cab39169d648Dan Egnor long before = SystemClock.uptimeMillis(); 58621bc545982e2318e71bef3111d3cab39169d648Dan Egnor try { 59621bc545982e2318e71bef3111d3cab39169d648Dan Egnor fos = new FileOutputStream(tmp); 60621bc545982e2318e71bef3111d3cab39169d648Dan Egnor fos.write(junk); 61621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } catch (IOException e) { 62621bc545982e2318e71bef3111d3cab39169d648Dan Egnor error = e; 63621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } finally { 64621bc545982e2318e71bef3111d3cab39169d648Dan Egnor try { if (fos != null) fos.close(); } catch (IOException e) {} 65621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } 66621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 67621bc545982e2318e71bef3111d3cab39169d648Dan Egnor long after = SystemClock.uptimeMillis(); 68621bc545982e2318e71bef3111d3cab39169d648Dan Egnor if (tmp.exists()) tmp.delete(); 69621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 70621bc545982e2318e71bef3111d3cab39169d648Dan Egnor if (error != null) { 71621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print("Test-Error: "); 72621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.println(error.toString()); 73621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } else { 74621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print("Latency: "); 75621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print(after - before); 76621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.println("ms [512B Data Write]"); 77621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } 78621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 79621bc545982e2318e71bef3111d3cab39169d648Dan Egnor reportFreeSpace(Environment.getDataDirectory(), "Data", pw); 80621bc545982e2318e71bef3111d3cab39169d648Dan Egnor reportFreeSpace(Environment.getDownloadCacheDirectory(), "Cache", pw); 81621bc545982e2318e71bef3111d3cab39169d648Dan Egnor reportFreeSpace(new File("/system"), "System", pw); 82621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 83621bc545982e2318e71bef3111d3cab39169d648Dan Egnor // TODO: Read /proc/yaffs and report interesting values; 84621bc545982e2318e71bef3111d3cab39169d648Dan Egnor // add configurable (through args) performance test parameters. 85621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } 86621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 87621bc545982e2318e71bef3111d3cab39169d648Dan Egnor private void reportFreeSpace(File path, String name, PrintWriter pw) { 88621bc545982e2318e71bef3111d3cab39169d648Dan Egnor try { 89621bc545982e2318e71bef3111d3cab39169d648Dan Egnor StatFs statfs = new StatFs(path.getPath()); 90621bc545982e2318e71bef3111d3cab39169d648Dan Egnor long bsize = statfs.getBlockSize(); 91621bc545982e2318e71bef3111d3cab39169d648Dan Egnor long avail = statfs.getAvailableBlocks(); 92621bc545982e2318e71bef3111d3cab39169d648Dan Egnor long total = statfs.getBlockCount(); 93621bc545982e2318e71bef3111d3cab39169d648Dan Egnor if (bsize <= 0 || total <= 0) { 94621bc545982e2318e71bef3111d3cab39169d648Dan Egnor throw new IllegalArgumentException( 95621bc545982e2318e71bef3111d3cab39169d648Dan Egnor "Invalid stat: bsize=" + bsize + " avail=" + avail + " total=" + total); 96621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } 97621bc545982e2318e71bef3111d3cab39169d648Dan Egnor 98621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print(name); 99621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print("-Free: "); 100621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print(avail * bsize / 1024); 101621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print("K / "); 102621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print(total * bsize / 1024); 103621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print("K total = "); 104621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print(avail * 100 / total); 105621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.println("% free"); 106621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } catch (IllegalArgumentException e) { 107621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print(name); 108621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.print("-Error: "); 109621bc545982e2318e71bef3111d3cab39169d648Dan Egnor pw.println(e.toString()); 110621bc545982e2318e71bef3111d3cab39169d648Dan Egnor return; 111621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } 112621bc545982e2318e71bef3111d3cab39169d648Dan Egnor } 113621bc545982e2318e71bef3111d3cab39169d648Dan Egnor} 114