Re: print stack...

From:

red floyd <no.spam@here.dude>

Newsgroups:

comp.lang.c++

Date:

Tue, 16 Oct 2007 11:20:05 -0700

Message-ID:

<Eh7Ri.6371$lE2.448@newssvr22.news.prodigy.net>

call_me_anything wrote:

Here is a code to have a debug printf :

#ifdef DEBUG
#define DEBUG_printf(...)
{printf("[%s]:",__FUNCTION__);printf(__VA_ARGS__);printf("\n");}
#else
#define DEBUG
#endif

int main () {
DEBUG_printf ("%d %s", 5, "abc");
}

Is there something similar, which can print the current stack ?
I mean some C/C++ API which can help me get any info related to the
current stack of functions.
Thats is required for debugging.
(Please do not suggest gdb... I want something similar to gdb stack
traces but that should print stack info everytime I compile with DEBUG
on)

Not built in, but it's fairly easy to add:

#include <ostream>
class stack_tracer
{
     public:
         stack_tracer(const char *where) : where_(where), next_(top())
         {
             top() = this;
    }
    ~stack_tracer()
         {
        top() = next_;
         }
         static std::ostream& dump(std::ostream& os)
         {
              for (stack_tracer* curr = top();
                   curr != NULL;
                   curr = curr->next_)
              {
                   os << curr->where_ << '\n';
              }
              return os;
         }
     private:
         static stack_tracer*& top()
         {
              static stack_tracer* top_ = 0;
              return top_;
         }
         stack_tracer *next_;
         const char *where_;
};

#define TRACE3(mark, ln, txt) stack_tracer mark ## ln ## _(txt)
#define TRACE2(ln, txt) TRACE3(st_, ln , txt)
#define TRACE(txt) TRACE2(__LINE__,txt)

#include <iostream>

int f()
{
    TRACE("f");
         if (true)
         {
             TRACE("If block in f()");
             stack_tracer::dump(std::cout) << std::endl;
         }
}

int main()
{
    TRACE("main");
         stack_tracer::dump(std::cout) << std::endl;
         f();

}