1/* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.support.v4.net; 18 19import android.net.TrafficStats; 20import android.os.ParcelFileDescriptor; 21 22import java.net.DatagramSocket; 23import java.net.Socket; 24import java.net.SocketException; 25 26/** 27 * Implementation of TrafficStatsCompat that can call ICS APIs. 28 */ 29class TrafficStatsCompatIcs { 30 public static void clearThreadStatsTag() { 31 TrafficStats.clearThreadStatsTag(); 32 } 33 34 public static int getThreadStatsTag() { 35 return TrafficStats.getThreadStatsTag(); 36 } 37 38 public static void incrementOperationCount(int operationCount) { 39 TrafficStats.incrementOperationCount(operationCount); 40 } 41 42 public static void incrementOperationCount(int tag, int operationCount) { 43 TrafficStats.incrementOperationCount(tag, operationCount); 44 } 45 46 public static void setThreadStatsTag(int tag) { 47 TrafficStats.setThreadStatsTag(tag); 48 } 49 50 public static void tagSocket(Socket socket) throws SocketException { 51 TrafficStats.tagSocket(socket); 52 } 53 54 public static void untagSocket(Socket socket) throws SocketException { 55 TrafficStats.untagSocket(socket); 56 } 57 58 public static void tagDatagramSocket(DatagramSocket socket) throws SocketException { 59 final ParcelFileDescriptor pfd = ParcelFileDescriptor.fromDatagramSocket(socket); 60 TrafficStats.tagSocket(new DatagramSocketWrapper(socket, pfd.getFileDescriptor())); 61 // The developer is still using the FD, so we need to detach it to 62 // prevent the PFD finalizer from closing it in their face. We had to 63 // wait until after the tagging call above, since detaching clears out 64 // the getFileDescriptor() result which tagging depends on. 65 pfd.detachFd(); 66 } 67 68 public static void untagDatagramSocket(DatagramSocket socket) throws SocketException { 69 final ParcelFileDescriptor pfd = ParcelFileDescriptor.fromDatagramSocket(socket); 70 TrafficStats.untagSocket(new DatagramSocketWrapper(socket, pfd.getFileDescriptor())); 71 // The developer is still using the FD, so we need to detach it to 72 // prevent the PFD finalizer from closing it in their face. We had to 73 // wait until after the tagging call above, since detaching clears out 74 // the getFileDescriptor() result which tagging depends on. 75 pfd.detachFd(); 76 } 77} 78