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Tamir DresherSenior Software ArchitectJ

Debugging tricks you wish you knew

https://oz-code.com

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Debugging is a time-travel

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3Author of Rx.NET in Action (manning publications)Software architect, consultant and instructorSoftware Engineering Lecturer @ Ruppin Academic CenterOzCode Evangelist

@tamir_dreshertamirdr@codevalue.nethttp://www.TamirDresher.com.

About Me

My name is tamir dresherIm an architect from codevalue israel and a software engineering lecturer at the ruppin academic centerCodeValue is a consulting company and we are also the proud development center of OzCode the amazing debugging extension for visual studio. We have a booth here at conference, so please go and check it out, youll be amazed how you lived without it.My book Rx in action is now available at Manning early access program should be published in the next few months.And that the end of my self promotion(it never hurts right?).

So what are we really here for?

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AgendaDebugging a real-life problemTips and TricksExceptionsBreakpoints (JustMyCode, External Code)Debugging Multithreaded ApplicationsSymbolsPost-mortem & Production DebuggingDebugging LINQ (if time allows)

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Breakpointsconditional breakpointsComparing object while debuggingObject IDsOzCode CompareExceptionsBreaking on exceptionsConditional exceptions breakDebugging Multithreaded ApplicationsFreezing debugging to the current threaddetecting deadlocked tasksUsing tracepointsFinding an object and seeing all object of certain type while debuggingDebugging LINQPost-mortum debuggingDumps

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5The following events are based on a true story

Demo application ToDo Items in Notebooks

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Basic usage demo

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Export and Import

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The import bug

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Mastering exceptions

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Mastering exceptions Catching ALL exceptions

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Finding the bug in the code (1)

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Finding the bug in the code (2)25

Finding the bug in the code (3)26

Assemblies Load Failures

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Why cant it load the refence assembly?

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Fusion log view - FuslogvwAssembly Binding Log ViewerSet the registry keys under: HKLM\Software\Microsoft\Fusion

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procmon

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Breakpoints

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Method BreakpointsIf you type a method name (without class name)VS select all that matches

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Conditional Breakpoints

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Conditional Breakpoints (OzCode)

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invoice.Id915486intinvoice.Id915486int

Object Tracking Story

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Multithreading

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Staying on the same thread (freezing other threads)

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Tracepoints (VS)a.k.a Printf() debugging38

Tracepoints (OzCode)

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Show All Instances

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Finding Tasks DeadlocksDebug > windows > Tasks41

Production Time and Post-Mortem Debugging

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Backgammon failure43

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Debugging an exe44

Debugging *.exe Files

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VS Crash

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Debugging VS

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Attaching and Debugging VS47

Attaching to VS

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Attaching to VS49

Dumps

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Taking and debugging the dump51

Automatic Dump CreationTo enable it, set the reg key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumpsDumpFolder Location for the output dumpsDumpCount Maximum amount of dumps in the folderDumpType 1 Mini Dump2 Full Dump0 Custom DumpCustomDumpFlags if DumpType is 0, set the dump options52

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Debugging the Dump (1)

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Debugging the Dump (2)

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LINQ

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LINQ Debugging

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AgendaDebugging a real-life problemTips and TricksExceptionsBreakpoints (JustMyCode, External Code)Debugging Multithreaded ApplicationsSymbolsPost-mortem & Production DebuggingDebugging LINQ (if time allows)

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Breakpointsconditional breakpointsComparing object while debuggingObject IDsOzCode CompareExceptionsBreaking on exceptionsConditional exceptions breakDebugging Multithreaded ApplicationsFreezing debugging to the current threaddetecting deadlocked tasksUsing tracepointsFinding an object and seeing all object of certain type while debuggingDebugging LINQPost-mortum debuggingDumps

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Thanks! Tamir Dresher Senior Architect @tamir_dresher http://www.tamirdresher.com http://oz-code.com

manning.com/dresher

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Export

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Custom Expressions60

items.Where(i=>i.tags.Contains(swift)).ToList()60

Give it a tryhttps://github.com/oz-code/OzCodeDemo

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Predicting the futurePredict62

Comparing Instances

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Make object ID

The object is later available in every watch window64

OzCode Comapre

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