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CHAPTER 1 VISUAL STUDIO 2010
Concurrency checks are designed to detect issues with multi - threaded applications. The concurrency
checks support two modes. The fi rst checks for resource contention issues. This occurs when two threads
are, for example, attempting to write output to the same data fi le or data table, thus forcing your parallel
processing to behave in a serial manner. The second mode enables you to better track how threaded events
are behaving.
Instrumentation, conversely, is an intrusive form of performance monitoring. Choosing to make an
instrumentation run the performance tools triggers the addition of special MSIL commands into your
compiled executable. These calls are placed at the start and fi nish of methods and properties within your
executable. Then, as your code executes, the performance engine can gauge how long it takes for specifi c
calls within your application to execute.
Keep in mind that all methods of performance testing affect the underlying performance of the application. It
is true that running a performance monitor of any type has built - in overhead that affects your application, but
the goal of performance testing isn ’ t to know the exact timing marks of your application, but rather to identify
areas that deviate signifi cantly from the norm, and, more important, to establish a baseline from which you
can track any signifi cant changes as code is modifi ed.
SUMMARY
In this chapter, you have taken a dive into the versions and features of Visual Studio. This chapter was
intended to help you explore the new Visual Studio IDE. It demonstrated the powerful features of the IDE,
even in the freely available Visual Basic 2010 Express Edition.
You ’ ve seen that Visual Studio 2010 is highly customizable and comes in a variety of fl avors. As you worked
within Visual Studio 2010, you ’ ve seen how numerous windows can be hidden, docked, or undocked. They
can be layered in tabs and moved both within and beyond the IDE. Visual Studio also contains many tools,
including some that extend its core capabilities. Keep in mind that whether you are using Visual Basic 2010
Express Edition or Visual Studio 2010 Ultimate, the core elements associated with compiling your application
are the same.
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