On Oct 16, 8:20 pm, red floyd <no.s...@here.dude> wrote:
> call_me_anything wrote:

[...]
> > Is there something similar, which can print the current stack ?
> > I mean some C/C++ API which can 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:

For what platform? Which compiler? What compile options?

It's very, very implementation dependent.

> #include <ostream>
> class stack_tracer
> {
> public:
> stack_tracer(const char *where) : where_(where), next_(top())
> {
> top() = this;
> }
> ~stack_tracer()
> {
> top() = next_;
> }
> static std:stream& dump(std:stream& 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();
> }

Your implementation has two major problems: it requires that
every function use the TRACE macro, it skips functions which
don't use the macro; and it fails radically in a multi-thread
environment.

--
James Kanze (GABI Software) email:james.kanze@gmail.com
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