Monitoring the responsiveness of a user interface

摘要

A diagnostic mechanism monitors execution of a user interface (UI) thread to detect execution of a long running task that may have caused the UI thread to become unresponsive. The execution time of the UI thread is monitored and when it exceeds a threshold, the UI thread's call stack is preserved to a mini-dump file. The completion time of the UI thread is also tracked and stored in a delay file. The mini-dump and delay files are then uploaded to a server where the collected data is aggregated overall execution runs by multiple users to identify the cause of the unresponsiveness.

主权项

1. A method for monitoring the responsiveness of a user interface, comprising:
monitoring execution of a user interface (UI) thread processing an event from when the UI thread initiates execution of a message associated with the event to completion of an event handler that is associated with the event; determining that the UI thread is unresponsive when an amount of time the UI thread takes to process the event exceeds a threshold; suspending execution of the UI thread; during the suspended execution of the UI thread, preserving a call stack associated with the UI thread when the UI thread is determined to be unresponsive; and resuming execution of the UI thread once the call stack is preserved, wherein the preceding steps are performed on at least one processor.