[boost] Any interest for stack_trace?

20 Apr 2007

      Java programs are easy to debug, one who catch an exception can print
the stack trace, and when it crash, it would print the stack, too. It is
useful, so I wrote some code of stack_trace for C++, see the sample below:

/***** sample.cpp *****/
#include <boost/stack_trace.hpp>
#include <iostream>
#include <sstream>
using namespace boost;
using namespace std;

class exception_with_stack_trace : public exception
{
private:
    std::string what_;
public:
    exception_with_stack_trace(const char* file, unsigned int line,
const char* func)
    {
        stringstream ss;
        ss << "exception occurred at " << func << " (" << file << ":" <<
line << ")\n";
        vector<stack_trace::element const *> const & st =
stack_trace::get();
        for(size_t i = st.size(); --i != 0; )
        {
            ss << "\tfrom " << st[i]->tag() << " (" << st[i]->file() <<
":" << st[i]->line() << ")\n";
        }
        what_ = ss.str();
    }
    virtual exception_with_stack_trace::~exception_with_stack_trace()
throw (){}
    virtual const char * what() const throw ()
    {
        return what_.c_str();
    }
};

void foo(int a)
{
    BOOST_STACK_TRACK_CALL;
    cout << stack_trace::to_string() << endl;
    if(a == 1)
    {
        throw exception_with_stack_trace(__FILE__, __LINE__, __FUNCTION__);
    }

}
void foo()
{   BOOST_STACK_TRACK_CALL;
    foo(0);
    foo(1);
    cout << stack_trace::to_string() << endl;
}
void bar()
{   BOOST_STACK_TRACK_CALL;
    foo();
    cout << stack_trace::to_string() << endl;
}

int main()
{
    BOOST_STACK_TRACK_CALL;
    try
    {
        BOOST_STACK_TRACK_TAG("try");
        foo();
        cout << stack_trace::to_string() << endl;
        bar();
        cout << stack_trace::to_string() << endl;
    }
    catch(exception& e)
    {
        cerr << e.what() << endl;
    }
}
/***** sample.cpp *****/

And run it to print below:

1> stdout
sample.cpp 54 main
sample.cpp 57 try
sample.cpp 41 foo
sample.cpp 32 foo

sample.cpp 54 main
sample.cpp 57 try
sample.cpp 41 foo
sample.cpp 32 foo

2> stderr
exception occurred at foo (sample.cpp:36)
        from foo (sample.cpp:32)
        from foo (sample.cpp:41)
        from try (sample.cpp:57)

[boost] Any interest for stack_trace?

Atry