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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_BACKTRACE_H
#define CEPH_BACKTRACE_H
#include "acconfig.h"
#include <iosfwd>
#ifdef HAVE_EXECINFO_H
#include <execinfo.h>
#endif
#include <stdlib.h>
#include <list>
#include <string>
namespace ceph {
class Formatter;
struct BackTrace {
virtual ~BackTrace() {}
virtual void print(std::ostream& out) const = 0;
virtual void dump(Formatter *f) const = 0;
};
inline std::ostream& operator<<(std::ostream& out, const BackTrace& bt) {
bt.print(out);
return out;
}
struct ClibBackTrace : public BackTrace {
const static int max = 32;
int skip;
void *array[max]{};
size_t size;
char **strings;
explicit ClibBackTrace(int s) {
#ifdef HAVE_EXECINFO_H
skip = s;
size = backtrace(array, max);
strings = backtrace_symbols(array, size);
#else
skip = 0;
size = 0;
strings = nullptr;
#endif
}
~ClibBackTrace() {
free(strings);
}
ClibBackTrace(const ClibBackTrace& other);
const ClibBackTrace& operator=(const ClibBackTrace& other);
void print(std::ostream& out) const override;
void dump(Formatter *f) const override;
static std::string demangle(const char* name);
};
struct PyBackTrace : public BackTrace {
std::list<std::string> strings;
explicit PyBackTrace(std::list<std::string>& s) : strings(s) {}
void dump(Formatter *f) const override;
void print(std::ostream& out) const override;
};
}
#endif
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