Effective in 2026, to align with our trunk stable development model and ensure platform stability for the ecosystem, we will publish source code to AOSP in Q2 and Q4. For building and contributing to AOSP, we recommend utilizing android-latest-release instead of aosp-main. The android-latest-release manifest branch will always reference the most recent release pushed to AOSP. For more information, see Changes to AOSP.

MonitorThread

public final class MonitorThread
extends Object

java.lang.Object
↳	com.android.tradefed.device.server.MonitorThread

Monitor open connections.

Summary

Public methods
`void`	`addClient(ClientImpl client)` Add a new Client to the list of things we monitor.
`static MonitorThread`	`createInstance()` Creates and return the singleton instance of the client monitor thread.
`void`	`dropClient(ClientImpl client, boolean notify)` Drops a client from the monitor.
`void`	`dropClients( clients, boolean notify)` Drops the provided list of clients from the monitor.
`DdmJdwpExtension`	`getDdmExtension()`
`static MonitorThread`	`getInstance()` Get singleton instance of the client monitor thread.
`boolean`	`getRetryOnBadHandshake()` Returns "true" if we want to retry connections to clients if we get a bad JDWP handshake back, "false" if we want to just mark them as bad and leave them alone.
`void`	`quit()` Tell the thread to stop.
`void`	`registerChunkHandler(int type, ChunkHandler handler)` Register "handler" as the handler for type "type".
`void`	`run()` Watch for activity from clients and debuggers.

Public methods

addClient

public void addClient (ClientImpl client)

Add a new Client to the list of things we monitor. Also adds the client's channel and the client's debugger listener to the selection list. This should only be called from one thread (the VMWatcherThread) to avoid a race between "alreadyOpen" and Client creation.

Parameters
`client`	`ClientImpl`

createInstance

public static MonitorThread createInstance ()

Creates and return the singleton instance of the client monitor thread.

Returns
`MonitorThread`

dropClient

public void dropClient (ClientImpl client, 
                boolean notify)

Drops a client from the monitor.

This will lock the ClientImpl list of the IDevice running client.

dropClients

public void dropClients ( clients, 
                boolean notify)

Drops the provided list of clients from the monitor. This will lock the ClientImpl list of the IDevice running each of the clients.

Parameters
`clients`
`notify`	`boolean`

getDdmExtension

public DdmJdwpExtension getDdmExtension ()

Returns
`DdmJdwpExtension`

getInstance

public static MonitorThread getInstance ()

Get singleton instance of the client monitor thread.

Returns
`MonitorThread`

getRetryOnBadHandshake

public boolean getRetryOnBadHandshake ()

Returns "true" if we want to retry connections to clients if we get a bad JDWP handshake back, "false" if we want to just mark them as bad and leave them alone.

Returns
`boolean`

quit

public void quit ()

Tell the thread to stop. Called from UI thread.

registerChunkHandler

public void registerChunkHandler (int type, 
                ChunkHandler handler)

Parameters
`type`	`int`
`handler`	`ChunkHandler`

run

public void run ()

Watch for activity from clients and debuggers.