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-rw-r--r--core/java/android/os/NetStat.java247
1 files changed, 0 insertions, 247 deletions
diff --git a/core/java/android/os/NetStat.java b/core/java/android/os/NetStat.java
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index e294cdf..0000000
--- a/core/java/android/os/NetStat.java
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@@ -1,247 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.os;
-
-import android.util.Log;
-
-import java.io.File;
-import java.io.RandomAccessFile;
-import java.io.IOException;
-
-/** @hide */
-public class NetStat {
-
- // Logging tag.
- private final static String TAG = "netstat";
-
- // We pre-create all the File objects so we don't spend a lot of
- // CPU at runtime converting from Java Strings to byte[] for the
- // kernel calls.
- private final static File[] MOBILE_TX_PACKETS = mobileFiles("tx_packets");
- private final static File[] MOBILE_RX_PACKETS = mobileFiles("rx_packets");
- private final static File[] MOBILE_TX_BYTES = mobileFiles("tx_bytes");
- private final static File[] MOBILE_RX_BYTES = mobileFiles("rx_bytes");
- private final static File SYS_CLASS_NET_DIR = new File("/sys/class/net");
-
- /**
- * Get total number of tx packets sent through rmnet0 or ppp0
- *
- * @return number of Tx packets through rmnet0 or ppp0
- */
- public static long getMobileTxPkts() {
- return getMobileStat(MOBILE_TX_PACKETS);
- }
-
- /**
- * Get total number of rx packets received through rmnet0 or ppp0
- *
- * @return number of Rx packets through rmnet0 or ppp0
- */
- public static long getMobileRxPkts() {
- return getMobileStat(MOBILE_RX_PACKETS);
- }
-
- /**
- * Get total number of tx bytes received through rmnet0 or ppp0
- *
- * @return number of Tx bytes through rmnet0 or ppp0
- */
- public static long getMobileTxBytes() {
- return getMobileStat(MOBILE_TX_BYTES);
- }
-
- /**
- * Get total number of rx bytes received through rmnet0 or ppp0
- *
- * @return number of Rx bytes through rmnet0 or ppp0
- */
- public static long getMobileRxBytes() {
- return getMobileStat(MOBILE_RX_BYTES);
- }
-
- /**
- * Get the total number of packets sent through all network interfaces.
- *
- * @return the number of packets sent through all network interfaces
- */
- public static long getTotalTxPkts() {
- return getTotalStat("tx_packets");
- }
-
- /**
- * Get the total number of packets received through all network interfaces.
- *
- * @return the number of packets received through all network interfaces
- */
- public static long getTotalRxPkts() {
- return getTotalStat("rx_packets");
- }
-
- /**
- * Get the total number of bytes sent through all network interfaces.
- *
- * @return the number of bytes sent through all network interfaces
- */
- public static long getTotalTxBytes() {
- return getTotalStat("tx_bytes");
- }
-
- /**
- * Get the total number of bytes received through all network interfaces.
- *
- * @return the number of bytes received through all network interfaces
- */
- public static long getTotalRxBytes() {
- return getTotalStat("rx_bytes");
- }
-
- /**
- * Gets network bytes sent for this UID.
- * The statistics are across all interfaces.
- * The statistics come from /proc/uid_stat.
- *
- * {@see android.os.Process#myUid()}.
- *
- * @param uid
- * @return byte count
- */
- public static long getUidTxBytes(int uid) {
- return getNumberFromFilePath("/proc/uid_stat/" + uid + "/tcp_snd");
- }
-
- /**
- * Gets network bytes received for this UID.
- * The statistics are across all interfaces.
- * The statistics come from /proc/uid_stat.
- *
- * {@see android.os.Process#myUid()}.
- *
- * @param uid
- * @return byte count
- */
- public static long getUidRxBytes(int uid) {
- return getNumberFromFilePath("/proc/uid_stat/" + uid + "/tcp_rcv");
- }
-
- /**
- * Returns the array of two possible File locations for a given
- * statistic.
- */
- private static File[] mobileFiles(String whatStat) {
- // Note that we stat them at runtime to see which is
- // available, rather than here, to guard against the files
- // coming & going later as modules shut down (e.g. airplane
- // mode) and whatnot. The runtime stat() isn't expensive compared
- // to the previous charset conversion that happened before we
- // were reusing File instances.
- File[] files = new File[2];
- files[0] = new File("/sys/class/net/rmnet0/statistics/" + whatStat);
- files[1] = new File("/sys/class/net/ppp0/statistics/" + whatStat);
- return files;
- }
-
- private static long getTotalStat(String whatStat) {
- File netdir = new File("/sys/class/net");
-
- File[] nets = SYS_CLASS_NET_DIR.listFiles();
- if (nets == null) {
- return 0;
- }
- long total = 0;
- StringBuffer strbuf = new StringBuffer();
- for (File net : nets) {
- strbuf.append(net.getPath()).append(File.separator).append("statistics")
- .append(File.separator).append(whatStat);
- total += getNumberFromFilePath(strbuf.toString());
- strbuf.setLength(0);
- }
- return total;
- }
-
- private static long getMobileStat(File[] files) {
- for (int i = 0; i < files.length; i++) {
- File file = files[i];
- if (!file.exists()) {
- continue;
- }
- try {
- RandomAccessFile raf = new RandomAccessFile(file, "r");
- return getNumberFromFile(raf, file.getAbsolutePath());
- } catch (IOException e) {
- Log.w(TAG,
- "Exception opening TCP statistics file " + file.getAbsolutePath(),
- e);
- }
- }
- return 0L;
- }
-
- // File will have format <number><newline>
- private static long getNumberFromFilePath(String filename) {
- RandomAccessFile raf = getFile(filename);
- if (raf == null) {
- return 0L;
- }
- return getNumberFromFile(raf, filename);
- }
-
- // Private buffer for getNumberFromFile. Safe for re-use because
- // getNumberFromFile is synchronized.
- private final static byte[] buf = new byte[16];
-
- private static synchronized long getNumberFromFile(RandomAccessFile raf, String filename) {
- try {
- raf.read(buf);
- raf.close();
- } catch (IOException e) {
- Log.w(TAG, "Exception getting TCP bytes from " + filename, e);
- return 0L;
- } finally {
- if (raf != null) {
- try {
- raf.close();
- } catch (IOException e) {
- Log.w(TAG, "Exception closing " + filename, e);
- }
- }
- }
-
- long num = 0L;
- for (int i = 0; i < buf.length; i++) {
- if (buf[i] < '0' || buf[i] > '9') {
- break;
- }
- num *= 10;
- num += buf[i] - '0';
- }
- return num;
- }
-
- private static RandomAccessFile getFile(String filename) {
- File f = new File(filename);
- if (!f.canRead()) {
- return null;
- }
-
- try {
- return new RandomAccessFile(f, "r");
- } catch (IOException e) {
- Log.w(TAG, "Exception opening TCP statistics file " + filename, e);
- return null;
- }
- }
-}