ctak | A small test for multithreaded C stack unwinding on unixes

ctak is a C++ library. ctak has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Run the tak and ctak functions using multiple C++ threads. The ctak function tests how efficiently the unix unwinds the stack using C++ exception handling when multiple threads are doing it in parallel. On macOS the performance as you increase the number of threads is not bad. On Linux (debian) - it's terrible. It doesn't help to use llvm libunwind. Fundamentally it comes down to that on Linux it walks every dynamically loaded library and that requires a mutex and on macOS it's doing some kind of clever caching.