Automatically adding Enter/Exit Function Logs to a Project

Question

I have a 3rd party source code that I have to investigate. I want to see in what order the functions are called but I don\'t want to waste my time typing:

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Answer 1

You said "nor do I want to touch any source file"... fair game if you let a script do it for you?

Run this on all your .cpp files

sed 's/^{/{ENTRY/'

So that it transforms them into this:

void foo()
{ENTRY
  // code here
}

Put this in a header that can be #included by every unit:

#define ENTRY EntryRaiiObject obj ## __LINE__ (__FUNCTION__);

struct EntryRaiiObject {
  EntryRaiiObject(const char *f) : f_(f) { printf("Entered into %s", f_); }
  ~EntryRaiiObject() { printf("Exited from %s", f_); }
  const char *f_;
};

You may have to get fancier with the sed script. You can also put the ENTRY macro anywhere else you want to probe, like some deeply nested inner scope of a function.