Re: print stack...
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 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:
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::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();
}
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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