//----------------------------------------------------------------------------
// Construction
//----------------------------------------------------------------------------
public TrayApplicationContext()
{
this.disposed = false;
InitializeComponent();
this.statusText = null;
this.bugBotMessageQueue = new SharedMemTaggedBlobQueue(false, TaggedBlob.BugBotMessageQueueUniquifier);
this.bugBotCommandQueue = new SharedMemTaggedBlobQueue(false, TaggedBlob.BugBotCommandQueueUniquifier);
this.shutdownMonitor = new ShutdownMonitor(Program.TrayUniquifier);
this.shutdownMonitor.ShutdownEvent += (sender, e) => ShutdownApp();
this.threadStarter = new HandshakeThreadStarter("Swerve Tray Notification Thread", this.NotificationThreadLoop);
Application.ApplicationExit += (object sender, EventArgs e) => RemoveIcon();
this.trayIcon.Visible = true;
this.shutdownMonitor.StartMonitoring();
StartBotBugNotificationThread();
// Tell the service that we started
try {
this.bugBotCommandQueue.InitializeIfNecessary();
this.bugBotCommandQueue.Write(new TaggedBlob(TaggedBlob.TagSwerveToolsTrayStarted, new byte[0]), 100);
}
catch (Exception)
{
// ignore
}
}
//---------------------------------------------------------------------------------------------
// Construction
// ---------------------------------------------------------------------------------------------
public DeviceTracker(AndroidDebugBridge bridge)
{
this.bridge = bridge;
this.Devices = new List<Device>();
this.serverFailedConnects = 0;
this.serverRestarts = 0;
this.threadStarter = new HandshakeThreadStarter("Device List Monitor", DeviceTrackingThread);
}
protected virtual void Dispose(bool notFinalizer)
{
if (!disposed)
{
this.disposed = true;
if (notFinalizer)
{
lock (this)
{
StopMonitoring();
}
}
this.shutdownRequestedEvent?.Dispose(); this.shutdownRequestedEvent = null;
this.threadStarter?.Dispose(); this.threadStarter = null;
}
}
void ShutdownMonitorThread(HandshakeThreadStarter starter)
{
starter.DoHandshake();
while (!starter.StopRequested)
{
try {
this.shutdownRequestedEvent.WaitOne();
this.ShutdownEvent?.Invoke(this, EventArgs.Empty);
return;
}
catch (ThreadInterruptedException)
{
return;
}
}
}
//-----------------------------------------------------------------------------------------
// Construction
//-----------------------------------------------------------------------------------------
public USBMonitor(IDeviceEvents eventRaiser, ITracer tracer, IntPtr notificationHandle, bool notificationHandleIsService)
{
this.eventRaiser = eventRaiser;
this.tracer = tracer;
this.notificationHandle = notificationHandle;
this.notificationHandleIsService = notificationHandleIsService;
this.bugbotMessageQueue = new SharedMemTaggedBlobQueue(true, TaggedBlob.BugBotMessageQueueUniquifier);
this.bugbotMessageQueue.InitializeIfNecessary();
this.bugBotCommandQueue = new SharedMemTaggedBlobQueue(true, TaggedBlob.BugBotCommandQueueUniquifier);
this.bugBotCommandQueue.InitializeIfNecessary();
this.commandQueueStarter = new HandshakeThreadStarter("Command Q Listener", CommandQueueListenerThread);
this.androidDeviceDatabase = new AndroidDeviceDatabase();
UpdateStatusNoRememberedConnections();
this.bugbotMessageQueue.Write(TaggedBlob.TagBugBotMessage, Resources.StartingMessage);
this.deviceInterfacesOfInterest = new List<Guid>();
this.deviceNotificationHandles = new List<IntPtr>();
this.started = false;
}
void CommandQueueListenerThread(HandshakeThreadStarter starter)
{
starter.DoHandshake();
while (!starter.StopRequested)
{
List<TaggedBlob> blobs = this.bugBotCommandQueue.Read();
foreach (TaggedBlob blob in blobs)
{
switch (blob.Tag)
{
case TaggedBlob.TagForgetLastConnection:
this.tracer.Trace($"TagForgetLastConnection command received");
ForgetLastTCPIPDevice();
break;
case TaggedBlob.TagSwerveToolsTrayStarted:
UpdateTrayStatus();
break;
case TaggedBlob.TagDisarmService:
this.armed = false;
NotifyDisarmed();
UpdateTrayStatus();
break;
case TaggedBlob.TagArmService:
this.armed = true;
NotifyArmed();
UpdateTrayStatus();
break;
}
}
}
}
protected virtual void Dispose(bool notFinalizer)
{
if (!disposed)
{
this.disposed = true;
if (notFinalizer)
{
lock (this)
{
StopMonitoring();
}
}
this.shutdownRequestedEvent?.Dispose(); this.shutdownRequestedEvent = null;
this.threadStarter?.Dispose(); this.threadStarter = null;
}
}
//----------------------------------------------------------------------------
// Construction
//----------------------------------------------------------------------------
public ShutdownMonitor(string uniquifier)
{
this.shutdownRequestedEvent = new EventWaitHandle(false, EventResetMode.ManualReset, Util.GlobalName("ShutDownMonitor", uniquifier, "Event"));
this.threadStarter = new HandshakeThreadStarter("ShutdownMonitorThread", ShutdownMonitorThread);
this.disposed = false;
}
void ShutdownMonitorThread(HandshakeThreadStarter starter)
{
starter.DoHandshake();
while (!starter.StopRequested)
{
try {
this.shutdownRequestedEvent.WaitOne();
this.ShutdownEvent?.Invoke(this, EventArgs.Empty) ;
return;
}
catch (ThreadInterruptedException)
{
return;
}
}
}
// RULE: Once a stop is requested, we NEVER create a new socket.
// NOTE: With that rule in place, we probably could now get by w/o doing a handshake.
// The issue was that our (old) code here was racing with StopDeviceTrackign(), the
// former creating a socket and the latter closing it to wake us up. If that happened
// in the wrong order, we would never wake up.
void DeviceTrackingThread(HandshakeThreadStarter starter)
{
Log.d(loggingTag, "::: DeviceTrackingThread started :::");
// Right here we know that Start() hasn't yet returned. Do the interlock and let it return.
starter.DoHandshake();
// Loop until asked to stop. Do that even in the face of failures and exceptions
while (!starter.StopRequested)
{
try
{
if (OpenSocketIfNecessary(starter))
{
// Opened a new socket. Ask the ADB server to give us device notifications
this.IsTrackingDevices = RequestDeviceNotifications();
}
if (this.IsTrackingDevices)
{
// read the length of the incoming message
int length = ReadLength(this.socketTrackDevices, new byte[4]);
if (length >= 0)
{
// read the incoming message
ProcessTrackingDevicesNotification(length);
// flag the fact that we have build the list at least once.
this.HasDeviceList = true;
}
}
}
catch (Exception e)
{
Log.w(loggingTag, $"exception in DeviceTrackingThread: {e.Message}");
this.IsTrackingDevices = false;
CloseSocket(ref this.socketTrackDevices);
}
}
Log.d(loggingTag, "::: DeviceTrackingThread stopped :::");
}
protected virtual void Dispose(bool notFromFinalizer)
{
if (!this.disposed)
{
this.disposed = true;
if (notFromFinalizer)
{
}
this.threadStarter?.Dispose();
this.threadStarter = null;
}
}
void NotificationThreadLoop(HandshakeThreadStarter starter)
{
Trace(Program.LoggingTag, "===== NotificationThreadLoop start ... ");
try {
// Interlock with StartNotificationThread
starter.DoHandshake();
// Spin, waiting for kernel to make the section for us
for (bool thrown = true; !starter.StopRequested && thrown; )
{
try {
thrown = false;
this.bugBotMessageQueue.InitializeIfNecessary();
}
catch (FileNotFoundException)
{
Trace(Program.LoggingTag, "service hasn't created shared mem");
thrown = true;
Thread.Sleep(2000);
}
catch (Exception e)
{
Trace(Program.LoggingTag, $"exception thrown: {e}");
}
}
Trace(Program.LoggingTag, "===== NotificationThreadLoop listening");
while (!starter.StopRequested)
{
try {
// Get messages from writer. This will block until there's
// (probably) messages for us to read
Trace(Program.LoggingTag, "waiting for message...");
List<TaggedBlob> messages = this.bugBotMessageQueue.Read();
Trace(Program.LoggingTag, "...messages received");
if (messages.Count > 0)
{
// Separate the messages with newlines.
StringBuilder balloonText = new StringBuilder();
foreach (TaggedBlob blob in messages)
{
switch (blob.Tag)
{
case TaggedBlob.TagBugBotMessage:
if (balloonText.Length > 0)
balloonText.Append("\n");
balloonText.Append(blob.Message);
break;
case TaggedBlob.TagBugBotStatus:
// Update the status text
this.statusText = blob.Message;
UpdateIconText();
break;
}
}
// Display them to the user
if (balloonText.Length > 0)
ShowBalloon(balloonText.ToString());
}
}
catch (ThreadInterruptedException)
{
return;
}
}
}
finally
{
Trace(Program.LoggingTag, "===== ... NotificationThreadLoop stop");
}
}
protected override void Dispose(bool notFinalizer)
{
if (!disposed)
{
this.disposed = true;
if (notFinalizer)
{
// Called from user's code. Can / should cleanup managed objects
StopBotBugNotificationThread();
this.shutdownMonitor?.StopMonitoring();
}
// Called from finalizers (and user code). Avoid referencing other objects.
this.trayIcon?.Dispose(); this.trayIcon = null;
this.bugBotMessageQueue?.Dispose(); this.bugBotMessageQueue = null;
this.bugBotCommandQueue?.Dispose(); this.bugBotCommandQueue = null;
this.threadStarter?.Dispose(); this.threadStarter = null;
}
base.Dispose(notFinalizer);
}
protected virtual void Dispose(bool notFromFinalizer)
{
if (!disposed)
{
this.disposed = true;
if (notFromFinalizer)
{
this.bugbotMessageQueue?.Write(TaggedBlob.TagBugBotMessage, Resources.StoppingMessage);
}
this.bugbotMessageQueue?.Dispose(); this.bugbotMessageQueue = null;
this.bugBotCommandQueue?.Dispose(); this.bugBotCommandQueue = null;
this.commandQueueStarter?.Dispose(); this.commandQueueStarter = null;
this.ReleaseDeviceNotificationHandles();
}
}
// RULE: We NEVER create a new socket if a stop has been requested
/**
* Try, only once, to get a socket to the ADB server. If we can't connect, then
* (perhaps) restart the server.
*
* @return true if we opened a *new* socket
*/
bool OpenSocketIfNecessary(HandshakeThreadStarter starter)
{
bool result = false;
this.AcquireSocketLock();
try
{
// If we haven't a socket, try to open one
if (this.socketTrackDevices == null || !this.socketTrackDevices.Connected)
{
CloseSocket(ref this.socketTrackDevices);
this.socketTrackDevices = ConnectToServer();
//
if (this.socketTrackDevices == null)
{
// Connect attempt failed. Restart the server if we can
this.serverFailedConnects++;
if (this.serverFailedConnects > 0)
{
this.serverRestarts++;
if (starter.StopRequested) return result;
this.bridge.KillServer(); // takes seconds
if (starter.StopRequested) return result;
this.bridge.EnsureServerStarted(); // takes seconds
if (starter.StopRequested) return result;
}
if (this.serverRestarts > 1)
{
// Wait a bit before attempting another socket open
this.ReleaseSocketLock();
Log.d(loggingTag, "sleeping 1s");
Thread.Sleep(1000);
this.AcquireSocketLock();
}
}
else
{
result = true;
Log.d(loggingTag, "Connected to adb for device monitoring");
this.serverFailedConnects = 0;
this.serverRestarts = 0;
}
}
}
finally
{
this.ReleaseSocketLock();
}
return result;
}
/**
* 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.
*
* @exception ArgumentNullException Thrown when one or more required arguments are null.
*
* @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 waitforReaders if true, this will wait for the reader threads.
*
* @return the process return code.
*/
private static int GrabProcessOutput(Process process, List<string> errorOutput, List<string> stdOutput, bool waitforReaders)
{
if (errorOutput == null)
throw new ArgumentNullException(nameof(errorOutput));
if (stdOutput == null)
throw new ArgumentNullException(nameof(stdOutput));
// read the lines as they come. if null is returned, it's
// because the process finished
HandshakeThreadStarter t1 = new HandshakeThreadStarter("StdErr reader", (starter) =>
{
// create a buffer to read the stdoutput
try
{
using (StreamReader sr = process.StandardError)
{
starter.DoHandshake();
while (!starter.StopRequested && !sr.EndOfStream)
{
string line = sr.ReadLine();
if (!string.IsNullOrEmpty(line))
{
Log.e(ADB_EXE, line);
errorOutput.Add(line);
}
}
}
}
catch (Exception)
{
// do nothing.
}
});
HandshakeThreadStarter t2 = new HandshakeThreadStarter("StdOut reader", (starter) =>
{
// create a buffer to read the std output
try
{
using (StreamReader sr = process.StandardOutput)
{
starter.DoHandshake();
while (!starter.StopRequested && !sr.EndOfStream)
{
string line = sr.ReadLine();
if (!string.IsNullOrEmpty(line))
{
stdOutput.Add(line);
}
}
}
}
catch (Exception)
{
// 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 (ThreadInterruptedException)
{
}
try
{
t2.Join();
}
catch (ThreadInterruptedException)
{
}
}
// get the return code from the process
process.WaitForExit();
return process.ExitCode;
}
//----------------------------------------------------------------------------
// Construction
//----------------------------------------------------------------------------
public ShutdownMonitor(string uniquifier)
{
this.shutdownRequestedEvent = new EventWaitHandle(false, EventResetMode.ManualReset, Util.GlobalName("ShutDownMonitor", uniquifier, "Event"));
this.threadStarter = new HandshakeThreadStarter("ShutdownMonitorThread", ShutdownMonitorThread);
this.disposed = false;
}
