// Copyright Antony Polukhin, 2016-2019.
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_STACKTRACE_DETAIL_FRAME_UNWIND_IPP
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#define BOOST_STACKTRACE_DETAIL_FRAME_UNWIND_IPP
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#include <boost/config.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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# pragma once
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#endif
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#include <boost/stacktrace/frame.hpp>
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#include <boost/stacktrace/detail/to_hex_array.hpp>
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#include <boost/stacktrace/detail/location_from_symbol.hpp>
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#include <boost/stacktrace/detail/to_dec_array.hpp>
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#include <boost/core/demangle.hpp>
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#include <cstdio>
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#ifdef BOOST_STACKTRACE_USE_BACKTRACE
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# include <boost/stacktrace/detail/libbacktrace_impls.hpp>
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#elif defined(BOOST_STACKTRACE_USE_ADDR2LINE)
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# include <boost/stacktrace/detail/addr2line_impls.hpp>
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#else
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# include <boost/stacktrace/detail/unwind_base_impls.hpp>
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#endif
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namespace boost { namespace stacktrace { namespace detail {
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template <class Base>
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class to_string_impl_base: private Base {
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public:
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std::string operator()(boost::stacktrace::detail::native_frame_ptr_t addr) {
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Base::res.clear();
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Base::prepare_function_name(addr);
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if (!Base::res.empty()) {
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Base::res = boost::core::demangle(Base::res.c_str());
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} else {
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Base::res = to_hex_array(addr).data();
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}
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if (Base::prepare_source_location(addr)) {
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return Base::res;
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}
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boost::stacktrace::detail::location_from_symbol loc(addr);
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if (!loc.empty()) {
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Base::res += " in ";
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Base::res += loc.name();
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}
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return Base::res;
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}
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};
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std::string to_string(const frame* frames, std::size_t size) {
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std::string res;
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if (size == 0) {
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return res;
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}
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res.reserve(64 * size);
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to_string_impl impl;
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for (std::size_t i = 0; i < size; ++i) {
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if (i < 10) {
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res += ' ';
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}
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res += boost::stacktrace::detail::to_dec_array(i).data();
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res += '#';
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res += ' ';
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res += impl(frames[i].address());
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res += '\n';
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}
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return res;
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}
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} // namespace detail
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std::string frame::name() const {
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if (!addr_) {
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return std::string();
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}
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#if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
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::Dl_info dli;
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const bool dl_ok = !!::dladdr(const_cast<void*>(addr_), &dli); // `dladdr` on Solaris accepts nonconst addresses
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if (dl_ok && dli.dli_sname) {
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return boost::core::demangle(dli.dli_sname);
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}
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#endif
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return boost::stacktrace::detail::name_impl(addr_);
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}
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std::string to_string(const frame& f) {
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if (!f) {
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return std::string();
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}
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boost::stacktrace::detail::to_string_impl impl;
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return impl(f.address());
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}
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}} // namespace boost::stacktrace
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#endif // BOOST_STACKTRACE_DETAIL_FRAME_UNWIND_IPP
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