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From Wikipedia: “A deadlock is a situation wherein two or more competing actions are waiting for the other to finish, and thus neither ever does”. Deadlocks are terribly difficult to find and even more difficult to debug. Debug Inspector is a free tool that allows you to view the call stacks of multiple threads at the same time, plugs in to the internals of the CLR and automatically detects deadlocks.
The most powerful feature of this tool is that it works on both managed and unmanaged code. It is actually a Visual Studio extension which can be used to detect managed deadlocks and a standalone executable to detect unmanaged deadlocks. Besides detecting deadlocks, there are more features to this tool:
The thirteen post of the series of programming job interview challenge is out, Only 13 comments with answers were provided to job interview challenge #12. This is a small amount comparing to the previous challenges, but I realize and understand that it was language specific and not very trivial challenge…
Jason Kikel was the first one to solve the question, and here is his short answer:
UnmanagedClass is referencing an address on ManagedClass without pinning it. The ManagedClass instance needs to be pinned so the GC won’t move it to another location during a collection.
The twelfth post of the series of programming job interview challenge is out, 28 readers provided answers to job interview challenge #11. I have to admit that I probably failed explaining what I was looking for in challenge #11, because I asked you to provide the best algorithm in both manners: performance and memory. What I really meant is that performance is most important but don’t neglect the memory issue. Due to my little “embarrassing failure”, there are two groups of correct answers – the performance oriented and the memory oriented.
The correct answer which I was looking for (best at performance) as Alex, the first one to provide a detailed solution (its two times in a row), wrote:
It is common knowledge that there is no such thing as software without bugs. There are several bugs out there that are hiding and therefore are not handled at all. We surely don’t want to release a software that will crash ungracefully due to such a case. Fortunately, the .Net framework makes it possible to […]
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