libcruft-util/backtrace_execinfo.cpp

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#include "backtrace.hpp"
#include "debug.hpp"
#include <cstdlib>
#include <execinfo.h>
#include <algorithm>
#include <memory>
using namespace std;
debug::backtrace::backtrace (void):
m_frames (DEFAULT_DEPTH) {
int final;
while ((final = ::backtrace (&m_frames[0], m_frames.size ())) == m_frames.size ())
m_frames.resize (m_frames.size () * 2);
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CHECK_HARD (final > 0);
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m_frames.resize ((unsigned)final);
}
ostream&
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debug::operator <<(ostream &os, const debug::backtrace &rhs) {
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const auto frames = rhs.frames ();
typedef unique_ptr<char *[], decltype(&std::free)> unique_str;
unique_str names (backtrace_symbols (&frames[0], frames.size ()), std::free);
for (unsigned int i = 0; i < frames.size (); ++i)
os << frames[i] << "\t" << names[i] << "\n";
return os;
}