Outsourced Software Testing: Exception Management
One of the most crucial threats to the performance of unmanaged applications is constituted by unnecessary exceptions. Since exceptions in unmanaged code require kernel mode switch for all stages of initiation, they should be avoided at all costs. Though the user mode can quickly switch to the kernel mode, all the extra work involved in handling the kernel mode exception takes long indeed. So that to help alleviate these performance problems, the Visual Studio .NET debugger Exception window allows you to manage the debugger’s handling of any exceptions. If you correctly understand how to use this window, you will be able to track unnecessary exceptions more quickly.
It is always worth refreshing your memory about outsourced software testing when you lack money, resources and experience to conduct a full-fledged testing of manufactured IT products.
Before considering the Exception dialog box, it is necessary to know what happens when the debugger of unmanaged code encounters an exception. As soon as an exception occurs, the OS terminates the process (i.e., all workflows stop), points at the exception point, and informs the debugger of the exception’s occurrence. It is referred to as the first chance exception, since in this case the debugger beсomes able to process it for the first time. The debugger can deal with the exception in two ways: it can handle it, and the app being debugged will not know anything about it, or it can transmit an exception to the program under debug. Selenium testing service makes it possible to automatically test web applications across a multitude of platforms and browsers.
The thought that the debugger can handle (or absorb) an exception may seem strange. Setting up an interrupt point in unmanaged code involves setting the INT 3 command in this part. In the context of an interrupt point, the debugger triggers an exception in the app under debug so the debugger must handle these exceptions. But if the exception is not initiated by the debugger, it informs the OS that it does not want to handle the exception, and it is transmitted to the program under debug. The debugger also displays a message in the Output window, which indicates the occurrence of the first exception. The program being debugged is restarted, and if it has exception handler installed, the exception is processed, and the app being debugged continues to run happily. Software test company does its best to improve the quality of IT products before that are made available to the target audience.