How to know what function called another

Question

I wanna know if there is any way to know where the function currently in execution was called, this is, in what file and line. I\'m using C language, and I\'m looking for so

Answer 1

There isn't anything that is supported in all implementations that will do what you want. I have occasionally found myself in the same situation, where I needed to track callers for a few methods and did something like the following:

#ifdef TRACKBACK
int foo(int arg1, int arg2, const char * file, int line)
{
    SEND_TO_LOG("foo", file, line);
#else
int foo(int arg1, int arg2)
{
#endif
    ...
    ...

Of course, it makes for a bit of a headache at the calling end, so you'll want to do something like:

#ifdef TRACKBACK
    #define TRACKING, __FILE__, __LINE__
#else
    #define TRACKING
#endif

Then the call:

foo(arg1, arg2 TRACKING);  //note the lack of the comma

It does the trick when all else fails.