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"Mario Hewardt's Advanced .NET Debugging is an excellent resource for both beginner and experienced developers working with .NET. The book is also packed with many debugging tips and discussions of CLR internals, which will benefit developers architecting software."-Jeffrey Richter, consultant, trainer, and author at Wintellect"Mario has done it again. His Advanced Windows Debugging (coauthored with Daniel Pravat) is an invaluable resource for native code debugging, and Advanced .NET Debugging achieves the same quality, clarity, and breadth to make it just as invaluable for .NET debugging."-Mark Russinovich, Technical Fellow, Microsoft CorporationThe Only Complete, Practical Guide to Fixing the Toughest .NET BugsAdvanced .NET Debugging is the first focused, pragmatic guide to tracking down today's most complex and challenging .NET application bugs. It is the only book to focus entirely on using powerful native debugging tools, including WinDBG, NTSD, and CDB, to debug .NET applications. Using these tools, author Mario Hewardt explains how to identify the real root causes of problems-far more quickly than you ever could with other debuggers.Hewardt first introduces the key concepts needed to successfully use .NET's native debuggers. Next, he turns to sophisticated debugging techniques, using real-world examples that demonstrate many common C# programming errors.This book enables you toMake practical use of postmortem debugging, including PowerDBG and other "power tools" Understand the debugging details and implications of the new .NET CLR 4.0 Master and successfully use Debugging Tools for Windows, as well as SOS, SOSEX, CLR Profiler, and other powerful tools Gain a deeper, more practical understanding of CLR internals, such as examining thread-specific data, managed heap and garbage collector, interoperability layer, and .NET exceptions Solve difficult synchronization problems, managed heap problems, interoperability problems, and much more Generate and successfully analyze crash dumps A companion web site (advanceddotnetdebugging.com) contains all sample code, examples, and bonus content.
Contents
Foreword xixPreface xxiAcknowledgments xxxiAbout the Author xxxiiiPart I: Overview 1Chapter 1: Introduction to the Tools 3Debugging Tools for Windows 3.NET 2.0-Redistributable 4.NET 2.0-SDK 5SOS 8SOSEX 10CLR Profiler 11Performance Counters 14Reflector for .NET 15PowerDbg 16Managed Debugging Assistants 18Summary 21Chapter 2: CLR Fundamentals 23High-Level Overview 23CLR and the Windows Loader 26Application Domains 33Assembly Overview 38Assembly Manifest 39Type Metadata 42Summary 68Chapter 3: Basic Debugging Tasks 69The Debugger and the Debugger Target 69Symbols 74Controlling Execution 77Loading Managed Code Extensions 85Controlling CLR Debugging 90Setting Breakpoints 90Object Inspection 103Thread Operations 131Code Inspection 143CLR Internals Commands 146Diagnostics Commands 149SOSEX Extension Commands 151Crash Dump Files 163Summary 165Part II: Applied Debugging 167Chapter 4: Assembly Loader 169CLR Loader Overview 169Simple Assembly Load Failure 179Load Context Failure 185Interoperability and DllNotFoundException 195Debugging Light Weight Code Generation 197Summary 202Chapter 5: Managed Heap and Garbage Collection 203Windows Memory Architecture Overview 204Garbage Collector Internals 213Debugging Managed Heap Corruptions 254Debugging Managed Heap Fragmentation 262Debugging Out of Memory Exceptions 272Summary 291Chapter 6: Synchronization 293Synchronization Basics 293Thread Synchronization Primitives 294Synchronization Internals 306Synchronization Scenarios 316Summary 344Chapter 7: Interoperability 345Platform Invocation 345COM Interoperability 352Debugging P/Invoke Calls 358Debugging Interop Leaks 373Debugging COM Interop Finalization 378Summary 388Part III: Advanced Topics 389Chapter 8: Postmortem Debugging 391Dump File Fundamentals 392Windows Error Reporting 409Summary 438Chapter 9: Power Tools 439PowerDbg 439Visual Studio 448CLR Profiler 460WinDbg and the CmdTree Command 467Summary 469Chapter 10: CLR 4.0 471Tools 471Managed Heap and Garbage Collection 472Synchronization 480Interoperability 483Postmortem Debugging 484Summary 485Index 487
