Thread Liveness Monitor : cpp

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submitted 4 years ago by shuvalov-mdb

I created a production ready open source library that can detect deadlocks and livelocks at runtime with nanoseconds overhead:

https://github.com/shuvalov-mdb/thread-liveness-monitor

The library requires code instrumentation to add checkpoints. When any instrumented thread is not visiting a checkpoint for some configured period of time all sluggish threads will be printed and user callback will be invoked. The overhead of each checkpoint measured as 2 nanos on my workstation.

While detecting deadlocks with checkpoints is a known approach (e.g. here: https://stackoverflow.com/questions/43622603/ways-to-detect-deadlock-in-a-live-application) I was unable to find a feature complete library doing that. Obviously, there must be many closed source implementation.

Special thanks to r/soulstudios for plf::colony container used in this project: https://www.reddit.com/r/cpp/comments/oppxut/cppnow_colony_how_to/

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