#include <stdio.h>
#include <set>
#include <dlfcn.h>
using namespace std;

static set<void*> *functions=NULL;
static int guard = 0;
extern "C" void __cyg_profile_func_enter (void *this_fn,
                               void *call_site) {
  if (guard) {
    // this is a pretty lame guard. gets run cos of operator new that's inlined everywhere, probly malloc too
    //printf("stuff up\n");
    return;
  }
  guard = 1;
  if (!functions)
    functions = new set<void*>();
  if (functions->find(this_fn) != functions->end()) {
    guard = 0;
    return;
  }
  functions->insert(this_fn);
  Dl_info info;
  dladdr(this_fn, &info);
  fprintf(stderr, "func_enter %s %x\n",  info.dli_fname,
          ((unsigned long)this_fn) - (unsigned long)info.dli_fbase);
  guard = 0;
}