Figure 1-1 CLR Profiler Start dialog in Visual Studio .NET

Creating QR Code ISO/IEC18004 in Visual Studio .NET Figure 1-1 CLR Profiler Start dialog
Figure 1-1 CLR Profiler Start dialog
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CLR Profiler
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1 INTRODUCTION TO THE TOOLS
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Figure 1-2 Sample View when profiling the CLR Profiler The data collected is output to a log file that is by default located in
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%windir%\Temp The log filename takes the form
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Pipe_<pid>log
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where <pid> is the process identifier of the process being profiled The CLR Profiler can also be started and controlled via the command line Running the CLR Profiler using the / switch opens a window with all the available options For example, if I want to profile an application called helloexe and log all profiling data to a log file named hellolog, I would use the command line
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clrprofiler -o hellolog -p helloexe
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where the o switch specifies the log filename and the p switch specifies the executable to be profiled In subsequent chapters, we will utilize both the command line and user interface (UI) to illustrate the power of the CLR Profiler
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1
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Introduction to the Tools
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Performance Counters
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Performance counters are an important part of the troubleshooting process During the NET framework installation process, a collection of performance counters is installed These performance counters represent a goldmine of information when analyzing NET application behavior To view the performance counters, the Windows Performance Monitor can be used Table 1-2 lists all the performance counter categories that are part of the NET runtime Throughout the book, the NET performance counters will be utilized to analyze NET applications Figure 1-3 shows an example of a performance counter view when ran on an instance of the CLR Profiler (CLRProfilerexe)
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Table 1-2 NET 20 Performance Counters Categories
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Performance Counter Category Description
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Exceptions Interoperability
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Just-in-time Compilation Loader Lock and Thread Memory Networking
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Remoting Security
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Performance counters related to exceptions thrown by NET applications Performance counters related to a NET application s relationship to COM, COM+, and external libraries Performance counters related to the Just In Time (JIT) compiler Performance counters related to the loading of NET entities (assemblies, types) Performance counters related to threads and locking behaviors Performance counters related to the garbage collector (GC) and memory utilization Performance counters related to the data a NET application sends and receives over the network Performance counters related to the remote objects that a NET application uses Performance counters related to the security checks and balances that the NET framework performs
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Reflector for NET
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1 INTRODUCTION TO THE TOOLS
Figure 1-3 Performance counter showing the total committed bytes in the
CLR Profiler instance
Reflector for NET
Usage scenarios: Version: Download point: NET assembly analyzer and disassembler 51 wwwaistocom/roeder/dotnet/Downloadaspx File=Reflector
Reflector for NET is a NET assembly explorer tool that includes a powerful disassembler that can reproduce the code from the MSIL (Microsoft Intermediate Language) to a higher level language of choice The language choices are C#, Visual Basic, Delphi, Managed C++, and Chrome Additionally, it includes an extensibility model in the form of an add-in API There are many add-ins available ranging from
1
Introduction to the Tools
Figure 1-4 Using Reflector on the Reflector executable a code review add-in to a code metrics add-in Figure 1-4 shows an example of analyzing the Reflectorexe binary itself using Reflector for NET To install the tool, the download location requires that you enter your name, organization, and email address Once entered, the package (ZIP file) can be downloaded and extracted to a location of choice To launch Reflector for NET, run reflectorexe from the installation folder
PowerDbg
Usage scenarios: Version: Download point: Debugger tool 50 wwwcodeplexcom/powerdbg
PowerDbg
PowerDbg is a library developed by Roberto Farah that allows you to control the native debuggers via Powershell (requires 10) It is a super useful tool when you want to control the execution of the debuggers using the command line The PowerDbg script returns information to the user in a neat and easily digestible fashion The great thing about PowerDbg is that it is easily extensible and enables calling and formatting your favorite commands (or a set of commands in common debug scenarios) To utilize PowerDbg, the easiest way is to initialize it in the Powershell profile In my case, I use the following profile path:
%windir%\System32\WindowsPowerShell\v10\profileps1
1 INTRODUCTION TO THE TOOLS
Simply copy the PowerDbg script into that file and reopen a Powershell command window You can now utilize the PowerDbg commands as illustrated in an example in Figure 1-5 PowerDbg works on the basis of sending commands to the running WinDbg instance The first part of any command execution is the opening of a log file, followed by running the actual command and then closing the log file The logfile is utilized by the PowerDbg script to analyze the results and produce the output Please note that in order for PowerDbg to find the WinDbg instance, it requires that the title of the window for the WinDbg instance to be named PowerDbg This can easily be done via the wtitle command (in WinDbg) as shown here: