Junfeng Zhang's Windows Programming Notes

We have experience some weird deadlock using managed code. We have a class with some shared resources. To protect the shared resources, we create a synchronization object, and use Lock(object) prior to access the shared resources. There is no nested...

One of the best practices on exception is don't catch all exceptions. There are many reasons why this is a best practice. For example, You want to look at the application state when the exception is thrown so that you can understand exactly why the exception...

MSDN and Microsoft support web site have some great information on how to find memory leaks, both for managed application and native applications. Unmanaged: How to use Umdh.exe to find memory leaks http://support.microsoft.com/kb/268343 Managed: Debugging...

This is the re-occuring post for questions and suggestions. I will not be able to provide any support beyond the trivial Q&A. For guaranteed quality of support, please contact Microsoft Product Support Service.

32 bit gacutil.exe can install/uninstall/enumerate 64 bit assemblies for GAC, so there is really no need for 64 bit gacutil.exe.

If you attach windows debugger to a .Net framework application, occasionally you may see debug spew of unknown exception 0xe0434f4e. (cfc.1244): Unknown exception - code e0434f4e (first chance) 0xe0434f4e is defined as EXCEPTION_HIJACK. (Copied...

We saw some cases when loading a perfect valid assembly, CLR may throw BadImageFormatException occasionally. In one particular case, we discover that it is caused by anti-virus scanners. Turn off the "Protection Against Unknown Threats" feature in the...

Platform Invoke allows managed code to call unmanaged functions exported by an DLL. While the reverse P/Invoke allows managed code to pass a managed delegate as a callback to native code. Both P/Invoke and Reverse P/Invoke requires parameter marshaling...

In Windows Debugger, we can break on C++ exception by doing " sxe eh ". We can also break on CLR exception by doing " sxe clr ". But sometimes you may see the following debug spew: (94c.960): C++ EH exception - code e06d7363 (first chance) (94c...