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Here you go: https://www.gnu.org/software/libc/manual/html_node/Hooks-for...

It's not even a page of copy/paste code to make a hook do whatever you want. Writing a .so for LD_PRELOAD is similarly a handful of lines.

Or you can use the plethora of open source debugging LD_PRELOAD libraries like efence.

And in a larger sense, you should try learning more and getting better at programming instead of being so dismissive.

Thanks for the link. I had no idea this could be considered "basic". You're right, I didn't hear about this while developing some C++ programs.

Out of curiosity, what's something you consider difficult or at the edge of your abilities while programming C++ in Linux? (Maybe something related to code generation?) You're clearly a very advanced user.

Why are you laughing? It's pretty common in anything vaguely real-time.

thanks, I didn't know. It didn't seem basic to me, but an advanced technique.

Never used C++? Most cases where Cpp is a good fit will require some memory usage and allocation profiling sooner or later.