移动测试基础 Android SDK 源码阅读之 ADB (AndroidDebugBridge) 源码共赏析

Archer_小A · August 04, 2014 · Last by Archer_小A replied at August 04, 2014 · 1644 hits
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晕.....很多人把这个当成ADB Server端的源码了。

/**
* 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 com.android.ddmlib;

import com.android.ddmlib.Log.LogLevel;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.Thread.State;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import java.security.InvalidParameterException;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/***
* A connection to the host-side android debug bridge (adb)
* <p/>This is the central point to communicate with any devices, emulators, or the applications
* running on them.
* <p/><b>{@link #init(boolean)} must be called before anything is done.</b>
*/

public final class AndroidDebugBridge {

/**
* Minimum and maximum version of adb supported. This correspond to
* ADB_SERVER_VERSION found in //device/tools/adb/adb.h
*/


private final static int ADB_VERSION_MICRO_MIN = 20;
private final static int ADB_VERSION_MICRO_MAX = -1;

private final static Pattern sAdbVersion = Pattern.compile(
"^.*(\\d+)\\.(\\d+)\\.(\\d+)$"); //$NON-NLS-1$

private final static String ADB = "adb"; //$NON-NLS-1$
private final static String DDMS = "ddms"; //$NON-NLS-1$

// Where to find the ADB bridge.
final static String ADB_HOST = "127.0.0.1"; //$NON-NLS-1$
final static int ADB_PORT = 5037;

static InetAddress sHostAddr;
static InetSocketAddress sSocketAddr;

static {
// built-in local address/port for ADB.
try {
sHostAddr = InetAddress.getByName(ADB_HOST);
sSocketAddr = new InetSocketAddress(sHostAddr, ADB_PORT);
} catch (UnknownHostException e) {

}
}

private static AndroidDebugBridge sThis;
private static boolean sClientSupport;

/*** Full path to adb. */
private String mAdbOsLocation = null;

private boolean mVersionCheck;

private boolean mStarted = false;

private DeviceMonitor mDeviceMonitor;

private final static ArrayList<IDebugBridgeChangeListener> sBridgeListeners =
new ArrayList<IDebugBridgeChangeListener>();
private final static ArrayList<IDeviceChangeListener> sDeviceListeners =
new ArrayList<IDeviceChangeListener>();
private final static ArrayList<IClientChangeListener> sClientListeners =
new ArrayList<IClientChangeListener>();

// lock object for synchronization
private static final Object sLock = sBridgeListeners;

/***
* Classes which implement this interface provide a method that deals
* with {@link AndroidDebugBridge} changes.
*/

public interface IDebugBridgeChangeListener {
/***
* Sent when a new {@link AndroidDebugBridge} is connected.
* <p/>
* This is sent from a non UI thread.
* @param bridge the new {@link AndroidDebugBridge} object.
*/

public void bridgeChanged(AndroidDebugBridge bridge);
}

/***
* Classes which implement this interface provide methods that deal
* with {@link IDevice} addition, deletion, and changes.
*/

public interface IDeviceChangeListener {
/***
* Sent when the a device is connected to the {@link AndroidDebugBridge}.
* <p/>
* This is sent from a non UI thread.
* @param device the new device.
*/

public void deviceConnected(IDevice device);

/***
* Sent when the a device is connected to the {@link AndroidDebugBridge}.
* <p/>
* This is sent from a non UI thread.
* @param device the new device.
*/

public void deviceDisconnected(IDevice device);

/***
* Sent when a device data changed, or when clients are started/terminated on the device.
* <p/>
* This is sent from a non UI thread.
* @param device the device that was updated.
* @param changeMask the mask describing what changed. It can contain any of the following
* values: {@link IDevice#CHANGE_BUILD_INFO}, {@link IDevice#CHANGE_STATE},
* {@link IDevice#CHANGE_CLIENT_LIST}
*/

public void deviceChanged(IDevice device, int changeMask);
}

/***
* Classes which implement this interface provide methods that deal
* with {@link Client} changes.
*/

public interface IClientChangeListener {
/***
* Sent when an existing client information changed.
* <p/>
* This is sent from a non UI thread.
* @param client the updated client.
* @param changeMask the bit mask describing the changed properties. It can contain
* any of the following values: {@link Client#CHANGE_INFO},
* {@link Client#CHANGE_DEBUGGER_STATUS}, {@link Client#CHANGE_THREAD_MODE},
* {@link Client#CHANGE_THREAD_DATA}, {@link Client#CHANGE_HEAP_MODE},
* {@link Client#CHANGE_HEAP_DATA}, {@link Client#CHANGE_NATIVE_HEAP_DATA}
*/

public void clientChanged(Client client, int changeMask);
}

/***
* Initializes the <code>ddm</code> library.
* <p/>This must be called once <b>before</b> any call to
* {@link #createBridge(String, boolean)}.
* <p>The library can be initialized in 2 ways:
* <ul>
* <li>Mode 1: <var>clientSupport</var> == <code>true</code>.<br>The library monitors the
* devices and the applications running on them. It will connect to each application, as a
* debugger of sort, to be able to interact with them through JDWP packets.</li>
* <li>Mode 2: <var>clientSupport</var> == <code>false</code>.<br>The library only monitors
* devices. The applications are left untouched, letting other tools built on
* <code>ddmlib</code> to connect a debugger to them.</li>
* </ul>
* <p/><b>Only one tool can run in mode 1 at the same time.</b>
* <p/>Note that mode 1 does not prevent debugging of applications running on devices. Mode 1
* lets debuggers connect to <code>ddmlib</code> which acts as a proxy between the debuggers and
* the applications to debug. See {@link Client#getDebuggerListenPort()}.
* <p/>The preferences of <code>ddmlib</code> should also be initialized with whatever default
* values were changed from the default values.
* <p/>When the application quits, {@link #terminate()} should be called.
* @param clientSupport Indicates whether the library should enable the monitoring and
* interaction with applications running on the devices.
* @see AndroidDebugBridge#createBridge(String, boolean)
* @see DdmPreferences
*/

public static void init(boolean clientSupport) {
sClientSupport = clientSupport;

MonitorThread monitorThread = MonitorThread.createInstance();
monitorThread.start();

HandleHello.register(monitorThread);
HandleAppName.register(monitorThread);
HandleTest.register(monitorThread);
HandleThread.register(monitorThread);
HandleHeap.register(monitorThread);
HandleWait.register(monitorThread);
HandleProfiling.register(monitorThread);
}

/***
* Terminates the ddm library. This must be called upon application termination.
*/

public static void terminate() {
// kill the monitoring services
if (sThis != null && sThis.mDeviceMonitor != null) {
sThis.mDeviceMonitor.stop();
sThis.mDeviceMonitor = null;
}

MonitorThread monitorThread = MonitorThread.getInstance();
if (monitorThread != null) {
monitorThread.quit();
}
}

/***
* Returns whether the ddmlib is setup to support monitoring and interacting with
* {@link Client}s running on the {@link IDevice}s.
*/

static boolean getClientSupport() {
return sClientSupport;
}

/***
* Creates a {@link AndroidDebugBridge} that is not linked to any particular executable.
* <p/>This bridge will expect adb to be running. It will not be able to start/stop/restart
* adb.
* <p/>If a bridge has already been started, it is directly returned with no changes (similar
* to calling {@link #getBridge()}).
* @return a connected bridge.
*/

public static AndroidDebugBridge createBridge() {
synchronized (sLock) {
if (sThis != null) {
return sThis;
}

try {
sThis = new AndroidDebugBridge();
sThis.start();
} catch (InvalidParameterException e) {
sThis = null;
}

// because the listeners could remove themselves from the list while processing
// their event callback, we make a copy of the list and iterate on it instead of
// the main list.
// This mostly happens when the application quits.
IDebugBridgeChangeListener[] listenersCopy = sBridgeListeners.toArray(
new IDebugBridgeChangeListener[sBridgeListeners.size()]);

// notify the listeners of the change
for (IDebugBridgeChangeListener listener : listenersCopy) {
// we attempt to catch any exception so that a bad listener doesn't kill our
// thread
try {
listener.bridgeChanged(sThis);
} catch (Exception e) {
Log.e(DDMS, e);
}
}

return sThis;
}
}


/***
* Creates a new debug bridge from the location of the command line tool.
* <p/>
* Any existing server will be disconnected, unless the location is the same and
* <code>forceNewBridge</code> is set to false.
* @param osLocation the location of the command line tool 'adb'
* @param forceNewBridge force creation of a new bridge even if one with the same location
* already exists.
* @return a connected bridge.
*/

public static AndroidDebugBridge createBridge(String osLocation, boolean forceNewBridge) {
synchronized (sLock) {
if (sThis != null) {
if (sThis.mAdbOsLocation != null && sThis.mAdbOsLocation.equals(osLocation) &&
forceNewBridge == false) {
return sThis;
} else {
// stop the current server
sThis.stop();
}
}

try {
sThis = new AndroidDebugBridge(osLocation);
sThis.start();
} catch (InvalidParameterException e) {
sThis = null;
}

// because the listeners could remove themselves from the list while processing
// their event callback, we make a copy of the list and iterate on it instead of
// the main list.
// This mostly happens when the application quits.
IDebugBridgeChangeListener[] listenersCopy = sBridgeListeners.toArray(
new IDebugBridgeChangeListener[sBridgeListeners.size()]);

// notify the listeners of the change
for (IDebugBridgeChangeListener listener : listenersCopy) {
// we attempt to catch any exception so that a bad listener doesn't kill our
// thread
try {
listener.bridgeChanged(sThis);
} catch (Exception e) {
Log.e(DDMS, e);
}
}

return sThis;
}
}

/***
* Returns the current debug bridge. Can be <code>null</code> if none were created.
*/

public static AndroidDebugBridge getBridge() {
return sThis;
}

/***
* Disconnects the current debug bridge, and destroy the object.
* <p/>This also stops the current adb host server.
* <p/>
* A new object will have to be created with {@link #createBridge(String, boolean)}.
*/

public static void disconnectBridge() {
synchronized (sLock) {
if (sThis != null) {
sThis.stop();
sThis = null;

// because the listeners could remove themselves from the list while processing
// their event callback, we make a copy of the list and iterate on it instead of
// the main list.
// This mostly happens when the application quits.
IDebugBridgeChangeListener[] listenersCopy = sBridgeListeners.toArray(
new IDebugBridgeChangeListener[sBridgeListeners.size()]);

// notify the listeners.
for (IDebugBridgeChangeListener listener : listenersCopy) {
// we attempt to catch any exception so that a bad listener doesn't kill our
// thread
try {
listener.bridgeChanged(sThis);
} catch (Exception e) {
Log.e(DDMS, e);
}
}
}
}
}

/***
* Adds the listener to the collection of listeners who will be notified when a new
* {@link AndroidDebugBridge} is connected, by sending it one of the messages defined
* in the {@link IDebugBridgeChangeListener} interface.
* @param listener The listener which should be notified.
*/

public static void addDebugBridgeChangeListener(IDebugBridgeChangeListener listener) {
synchronized (sLock) {
if (sBridgeListeners.contains(listener) == false) {
sBridgeListeners.add(listener);
if (sThis != null) {
// we attempt to catch any exception so that a bad listener doesn't kill our
// thread
try {
listener.bridgeChanged(sThis);
} catch (Exception e) {
Log.e(DDMS, e);
}
}
}
}
}

/***
* Removes the listener from the collection of listeners who will be notified when a new
* {@link AndroidDebugBridge} is started.
* @param listener The listener which should no longer be notified.
*/

public static void removeDebugBridgeChangeListener(IDebugBridgeChangeListener listener) {
synchronized (sLock) {
sBridgeListeners.remove(listener);
}
}

/***
* Adds the listener to the collection of listeners who will be notified when a {@link IDevice}
* is connected, disconnected, or when its properties or its {@link Client} list changed,
* by sending it one of the messages defined in the {@link IDeviceChangeListener} interface.
* @param listener The listener which should be notified.
*/

public static void addDeviceChangeListener(IDeviceChangeListener listener) {
synchronized (sLock) {
if (sDeviceListeners.contains(listener) == false) {
sDeviceListeners.add(listener);
}
}
}

/***
* Removes the listener from the collection of listeners who will be notified when a
* {@link IDevice} is connected, disconnected, or when its properties or its {@link Client}
* list changed.
* @param listener The listener which should no longer be notified.
*/

public static void removeDeviceChangeListener(IDeviceChangeListener listener) {
synchronized (sLock) {
sDeviceListeners.remove(listener);
}
}

/***
* Adds the listener to the collection of listeners who will be notified when a {@link Client}
* property changed, by sending it one of the messages defined in the
* {@link IClientChangeListener} interface.
* @param listener The listener which should be notified.
*/

public static void addClientChangeListener(IClientChangeListener listener) {
synchronized (sLock) {
if (sClientListeners.contains(listener) == false) {
sClientListeners.add(listener);
}
}
}

/***
* Removes the listener from the collection of listeners who will be notified when a
* {@link Client} property changed.
* @param listener The listener which should no longer be notified.
*/

public static void removeClientChangeListener(IClientChangeListener listener) {
synchronized (sLock) {
sClientListeners.remove(listener);
}
}


/***
* Returns the devices.
* @see #hasInitialDeviceList()
*/

public IDevice[] getDevices() {
synchronized (sLock) {
if (mDeviceMonitor != null) {
return mDeviceMonitor.getDevices();
}
}

return new IDevice[0];
}

/***
* Returns whether the bridge has acquired the initial list from adb after being created.
* <p/>Calling {@link #getDevices()} right after {@link #createBridge(String, boolean)} will
* generally result in an empty list. This is due to the internal asynchronous communication
* mechanism with <code>adb</code> that does not guarantee that the {@link IDevice} list has been
* built before the call to {@link #getDevices()}.
* <p/>The recommended way to get the list of {@link IDevice} objects is to create a
* {@link IDeviceChangeListener} object.
*/

public boolean hasInitialDeviceList() {
if (mDeviceMonitor != null) {
return mDeviceMonitor.hasInitialDeviceList();
}

return false;
}

/***
* Sets the client to accept debugger connection on the custom "Selected debug port".
* @param selectedClient the client. Can be null.
*/

public void setSelectedClient(Client selectedClient) {
MonitorThread monitorThread = MonitorThread.getInstance();
if (monitorThread != null) {
monitorThread.setSelectedClient(selectedClient);
}
}

/***
* Returns whether the {@link AndroidDebugBridge} object is still connected to the adb daemon.
*/

public boolean isConnected() {
MonitorThread monitorThread = MonitorThread.getInstance();
if (mDeviceMonitor != null && monitorThread != null) {
return mDeviceMonitor.isMonitoring() && monitorThread.getState() != State.TERMINATED;
}
return false;
}

/***
* Returns the number of times the {@link AndroidDebugBridge} object attempted to connect
* to the adb daemon.
*/

public int getConnectionAttemptCount() {
if (mDeviceMonitor != null) {
return mDeviceMonitor.getConnectionAttemptCount();
}
return -1;
}

/***
* Returns the number of times the {@link AndroidDebugBridge} object attempted to restart
* the adb daemon.
*/

public int getRestartAttemptCount() {
if (mDeviceMonitor != null) {
return mDeviceMonitor.getRestartAttemptCount();
}
return -1;
}

/***
* Creates a new bridge.
* @param osLocation the location of the command line tool
* @throws InvalidParameterException
*/

private AndroidDebugBridge(String osLocation) throws InvalidParameterException {
if (osLocation == null || osLocation.length() == 0) {
throw new InvalidParameterException();
}
mAdbOsLocation = osLocation;

checkAdbVersion();
}

/***
* Creates a new bridge not linked to any particular adb executable.
*/

private AndroidDebugBridge() {
}

/***
* Queries adb for its version number and checks it against {@link #MIN_VERSION_NUMBER} and
* {@link #MAX_VERSION_NUMBER}
*/

private void checkAdbVersion() {
// default is bad check
mVersionCheck = false;

if (mAdbOsLocation == null) {
return;
}

try {
String[] command = new String[2];
command[0] = mAdbOsLocation;
command[1] = "version"; //$NON-NLS-1$
Log.d(DDMS, String.format("Checking '%1$s version'", mAdbOsLocation)); //$NON-NLS-1$
Process process = Runtime.getRuntime().exec(command);

ArrayList<String> errorOutput = new ArrayList<String>();
ArrayList<String> stdOutput = new ArrayList<String>();
int status = grabProcessOutput(process, errorOutput, stdOutput,
true /** waitForReaders */);

if (status != 0) {
StringBuilder builder = new StringBuilder("'adb version' failed!"); //$NON-NLS-1$
for (String error : errorOutput) {
builder.append('\n');
builder.append(error);
}
Log.logAndDisplay(LogLevel.ERROR, "adb", builder.toString());
}

// check both stdout and stderr
boolean versionFound = false;
for (String line : stdOutput) {
versionFound = scanVersionLine(line);
if (versionFound) {
break;
}
}
if (!versionFound) {
for (String line : errorOutput) {
versionFound = scanVersionLine(line);
if (versionFound) {
break;
}
}
}

if (!versionFound) {
// if we get here, we failed to parse the output.
Log.logAndDisplay(LogLevel.ERROR, ADB,
"Failed to parse the output of 'adb version'"); //$NON-NLS-1$
}

} catch (IOException e) {
Log.logAndDisplay(LogLevel.ERROR, ADB,
"Failed to get the adb version: " + e.getMessage()); //$NON-NLS-1$
} catch (InterruptedException e) {
} finally {

}
}

/***
* Scans a line resulting from 'adb version' for a potential version number.
* <p/>
* If a version number is found, it checks the version number against what is expected
* by this version of ddms.
* <p/>
* Returns true when a version number has been found so that we can stop scanning,
* whether the version number is in the acceptable range or not.
*
* @param line The line to scan.
* @return True if a version number was found (whether it is acceptable or not).
*/

private boolean scanVersionLine(String line) {
if (line != null) {
Matcher matcher = sAdbVersion.matcher(line);
if (matcher.matches()) {
int majorVersion = Integer.parseInt(matcher.group(1));
int minorVersion = Integer.parseInt(matcher.group(2));
int microVersion = Integer.parseInt(matcher.group(3));

// check only the micro version for now.
if (microVersion < ADB_VERSION_MICRO_MIN) {
String message = String.format(
"Required minimum version of adb: %1$d.%2$d.%3$d." //$NON-NLS-1$
+ "Current version is %1$d.%2$d.%4$d", //$NON-NLS-1$
majorVersion, minorVersion, ADB_VERSION_MICRO_MIN,
microVersion);
Log.logAndDisplay(LogLevel.ERROR, ADB, message);
} else if (ADB_VERSION_MICRO_MAX != -1 &&
microVersion > ADB_VERSION_MICRO_MAX) {
String message = String.format(
"Required maximum version of adb: %1$d.%2$d.%3$d." //$NON-NLS-1$
+ "Current version is %1$d.%2$d.%4$d", //$NON-NLS-1$
majorVersion, minorVersion, ADB_VERSION_MICRO_MAX,
microVersion);
Log.logAndDisplay(LogLevel.ERROR, ADB, message);
} else {
mVersionCheck = true;
}

return true;
}
}
return false;
}

/***
* Starts the debug bridge.
* @return true if success.
*/

boolean start() {
if (mAdbOsLocation != null && (mVersionCheck == false || startAdb() == false)) {
return false;
}

mStarted = true;

// now that the bridge is connected, we start the underlying services.
mDeviceMonitor = new DeviceMonitor(this);
mDeviceMonitor.start();

return true;
}

/***
* Kills the debug bridge, and the adb host server.
* @return true if success
*/

boolean stop() {
// if we haven't started we return false;
if (mStarted == false) {
return false;
}

// kill the monitoring services
mDeviceMonitor.stop();
mDeviceMonitor = null;

if (stopAdb() == false) {
return false;
}

mStarted = false;
return true;
}

/***
* Restarts adb, but not the services around it.
* @return true if success.
*/

public boolean restart() {
if (mAdbOsLocation == null) {
Log.e(ADB,
"Cannot restart adb when AndroidDebugBridge is created without the location of adb."); //$NON-NLS-1$
return false;
}

if (mVersionCheck == false) {
Log.logAndDisplay(LogLevel.ERROR, ADB,
"Attempting to restart adb, but version check failed!"); //$NON-NLS-1$
return false;
}
synchronized (this) {
stopAdb();

boolean restart = startAdb();

if (restart && mDeviceMonitor == null) {
mDeviceMonitor = new DeviceMonitor(this);
mDeviceMonitor.start();
}

return restart;
}
}

/***
* Notify the listener of a new {@link IDevice}.
* <p/>
* The notification of the listeners is done in a synchronized block. It is important to
* expect the listeners to potentially access various methods of {@link IDevice} as well as
* {@link #getDevices()} which use internal locks.
* <p/>
* For this reason, any call to this method from a method of {@link DeviceMonitor},
* {@link IDevice} which is also inside a synchronized block, should first synchronize on
* the {@link AndroidDebugBridge} lock. Access to this lock is done through {@link #getLock()}.
* @param device the new <code>IDevice</code>.
* @see #getLock()
*/

void deviceConnected(IDevice device) {
// because the listeners could remove themselves from the list while processing
// their event callback, we make a copy of the list and iterate on it instead of
// the main list.
// This mostly happens when the application quits.
IDeviceChangeListener[] listenersCopy = null;
synchronized (sLock) {
listenersCopy = sDeviceListeners.toArray(
new IDeviceChangeListener[sDeviceListeners.size()]);
}

// Notify the listeners
for (IDeviceChangeListener listener : listenersCopy) {
// we attempt to catch any exception so that a bad listener doesn't kill our
// thread
try {
listener.deviceConnected(device);
} catch (Exception e) {
Log.e(DDMS, e);
}
}
}

/***
* Notify the listener of a disconnected {@link IDevice}.
* <p/>
* The notification of the listeners is done in a synchronized block. It is important to
* expect the listeners to potentially access various methods of {@link IDevice} as well as
* {@link #getDevices()} which use internal locks.
* <p/>
* For this reason, any call to this method from a method of {@link DeviceMonitor},
* {@link IDevice} which is also inside a synchronized block, should first synchronize on
* the {@link AndroidDebugBridge} lock. Access to this lock is done through {@link #getLock()}.
* @param device the disconnected <code>IDevice</code>.
* @see #getLock()
*/

void deviceDisconnected(IDevice device) {
// because the listeners could remove themselves from the list while processing
// their event callback, we make a copy of the list and iterate on it instead of
// the main list.
// This mostly happens when the application quits.
IDeviceChangeListener[] listenersCopy = null;
synchronized (sLock) {
listenersCopy = sDeviceListeners.toArray(
new IDeviceChangeListener[sDeviceListeners.size()]);
}

// Notify the listeners
for (IDeviceChangeListener listener : listenersCopy) {
// we attempt to catch any exception so that a bad listener doesn't kill our
// thread
try {
listener.deviceDisconnected(device);
} catch (Exception e) {
Log.e(DDMS, e);
}
}
}

/***
* Notify the listener of a modified {@link IDevice}.
* <p/>
* The notification of the listeners is done in a synchronized block. It is important to
* expect the listeners to potentially access various methods of {@link IDevice} as well as
* {@link #getDevices()} which use internal locks.
* <p/>
* For this reason, any call to this method from a method of {@link DeviceMonitor},
* {@link IDevice} which is also inside a synchronized block, should first synchronize on
* the {@link AndroidDebugBridge} lock. Access to this lock is done through {@link #getLock()}.
* @param device the modified <code>IDevice</code>.
* @see #getLock()
*/

void deviceChanged(IDevice device, int changeMask) {
// because the listeners could remove themselves from the list while processing
// their event callback, we make a copy of the list and iterate on it instead of
// the main list.
// This mostly happens when the application quits.
IDeviceChangeListener[] listenersCopy = null;
synchronized (sLock) {
listenersCopy = sDeviceListeners.toArray(
new IDeviceChangeListener[sDeviceListeners.size()]);
}

// Notify the listeners
for (IDeviceChangeListener listener : listenersCopy) {
// we attempt to catch any exception so that a bad listener doesn't kill our
// thread
try {
listener.deviceChanged(device, changeMask);
} catch (Exception e) {
Log.e(DDMS, e);
}
}
}

/***
* Notify the listener of a modified {@link Client}.
* <p/>
* The notification of the listeners is done in a synchronized block. It is important to
* expect the listeners to potentially access various methods of {@link IDevice} as well as
* {@link #getDevices()} which use internal locks.
* <p/>
* For this reason, any call to this method from a method of {@link DeviceMonitor},
* {@link IDevice} which is also inside a synchronized block, should first synchronize on
* the {@link AndroidDebugBridge} lock. Access to this lock is done through {@link #getLock()}.
* @param device the modified <code>Client</code>.
* @param changeMask the mask indicating what changed in the <code>Client</code>
* @see #getLock()
*/

void clientChanged(Client client, int changeMask) {
// because the listeners could remove themselves from the list while processing
// their event callback, we make a copy of the list and iterate on it instead of
// the main list.
// This mostly happens when the application quits.
IClientChangeListener[] listenersCopy = null;
synchronized (sLock) {
listenersCopy = sClientListeners.toArray(
new IClientChangeListener[sClientListeners.size()]);

}

// Notify the listeners
for (IClientChangeListener listener : listenersCopy) {
// we attempt to catch any exception so that a bad listener doesn't kill our
// thread
try {
listener.clientChanged(client, changeMask);
} catch (Exception e) {
Log.e(DDMS, e);
}
}
}

/***
* Returns the {@link DeviceMonitor} object.
*/

DeviceMonitor getDeviceMonitor() {
return mDeviceMonitor;
}

/***
* Starts the adb host side server.
* @return true if success
*/

synchronized boolean startAdb() {
if (mAdbOsLocation == null) {
Log.e(ADB,
"Cannot start adb when AndroidDebugBridge is created without the location of adb."); //$NON-NLS-1$
return false;
}

Process proc;
int status = -1;

try {
String[] command = new String[2];
command[0] = mAdbOsLocation;
command[1] = "start-server"; //$NON-NLS-1$
Log.d(DDMS,
String.format("Launching '%1$s %2$s' to ensure ADB is running.", //$NON-NLS-1$
mAdbOsLocation, command[1]));
proc = Runtime.getRuntime().exec(command);

ArrayList<String> errorOutput = new ArrayList<String>();
ArrayList<String> stdOutput = new ArrayList<String>();
status = grabProcessOutput(proc, errorOutput, stdOutput,
false /** waitForReaders */);

} catch (IOException ioe) {
Log.d(DDMS, "Unable to run 'adb': " + ioe.getMessage()); //$NON-NLS-1$
// we'll return false;
} catch (InterruptedException ie) {
Log.d(DDMS, "Unable to run 'adb': " + ie.getMessage()); //$NON-NLS-1$
// we'll return false;
}

if (status != 0) {
Log.w(DDMS,
"'adb start-server' failed -- run manually if necessary"); //$NON-NLS-1$
return false;
}

Log.d(DDMS, "'adb start-server' succeeded"); //$NON-NLS-1$

return true;
}

/***
* Stops the adb host side server.
* @return true if success
*/

private synchronized boolean stopAdb() {
if (mAdbOsLocation == null) {
Log.e(ADB,
"Cannot stop adb when AndroidDebugBridge is created without the location of adb."); //$NON-NLS-1$
return false;
}

Process proc;
int status = -1;

try {
String[] command = new String[2];
command[0] = mAdbOsLocation;
command[1] = "kill-server"; //$NON-NLS-1$
proc = Runtime.getRuntime().exec(command);
status = proc.waitFor();
}
catch (IOException ioe) {
// we'll return false;
}
catch (InterruptedException ie) {
// we'll return false;
}

if (status != 0) {
Log.w(DDMS,
"'adb kill-server' failed -- run manually if necessary"); //$NON-NLS-1$
return false;
}

Log.d(DDMS, "'adb kill-server' succeeded"); //$NON-NLS-1$
return true;
}

/***
* Get the stderr/stdout outputs of a process and return when the process is done.
* Both <b>must</b> be read or the process will block on windows.
* @param process The process to get the ouput from
* @param errorOutput The array to store the stderr output. cannot be null.
* @param stdOutput The array to store the stdout output. cannot be null.
* @param displayStdOut If true this will display stdout as well
* @param waitforReaders if true, this will wait for the reader threads.
* @return the process return code.
* @throws InterruptedException
*/

private int grabProcessOutput(final Process process, final ArrayList<String> errorOutput,
final ArrayList<String> stdOutput, boolean waitforReaders)
throws InterruptedException {
assert errorOutput != null;
assert stdOutput != null;
// read the lines as they come. if null is returned, it's
// because the process finished
Thread t1 = new Thread("") { //$NON-NLS-1$
@Override
public void run() {
// create a buffer to read the stderr output
InputStreamReader is = new InputStreamReader(process.getErrorStream());
BufferedReader errReader = new BufferedReader(is);

try {
while (true) {
String line = errReader.readLine();
if (line != null) {
Log.e(ADB, line);
errorOutput.add(line);
} else {
break;
}
}
} catch (IOException e) {
// do nothing.
}
}
};

Thread t2 = new Thread("") { //$NON-NLS-1$
@Override
public void run() {
InputStreamReader is = new InputStreamReader(process.getInputStream());
BufferedReader outReader = new BufferedReader(is);

try {
while (true) {
String line = outReader.readLine();
if (line != null) {
Log.d(ADB, line);
stdOutput.add(line);
} else {
break;
}
}
} catch (IOException e) {
// do nothing.
}
}
};

t1.start();
t2.start();

// it looks like on windows process#waitFor() can return
// before the thread have filled the arrays, so we wait for both threads and the
// process itself.
if (waitforReaders) {
try {
t1.join();
} catch (InterruptedException e) {
}
try {
t2.join();
} catch (InterruptedException e) {
}
}

// get the return code from the process
return process.waitFor();
}

/***
* Returns the singleton lock used by this class to protect any access to the listener.
* <p/>
* This includes adding/removing listeners, but also notifying listeners of new bridges,
* devices, and clients.
*/

static Object getLock() {
return sLock;
}
}
共收到 3 条回复 时间 点赞

答应大家的源码~

这是adb么。。 adb 不是应该在 http://androidxref.com/4.4.3_r1.1/xref/system/core/adb/ 这里的么。。

#2楼 @lihuazhang 这个是SDK里的~

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