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This commit adds an implementation based on libdwfl from elfutils. Implements #176
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| Original file line number | Diff line number | Diff line change |
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| // Distributed under the Boost Software License, Version 1.0. (See | ||
| // accompanying file LICENSE_1_0.txt or copy at | ||
| // http://www.boost.org/LICENSE_1_0.txt) | ||
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| #include <elfutils/libdwfl.h> | ||
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| int main() { | ||
| Dwfl_Callbacks callbacks{nullptr, nullptr, nullptr, nullptr}; | ||
| Dwfl* dwfl_ = dwfl_begin(&callbacks); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| // Distributed under the Boost Software License, Version 1.0. (See | ||
| // accompanying file LICENSE_1_0.txt or copy at | ||
| // http://www.boost.org/LICENSE_1_0.txt) | ||
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| #ifndef BOOST_STACKTRACE_DETAIL_LIBDWFL_IMPLS_HPP | ||
| #define BOOST_STACKTRACE_DETAIL_LIBDWFL_IMPLS_HPP | ||
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| #include <elfutils/libdwfl.h> | ||
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| #include <boost/stacktrace/detail/to_dec_array.hpp> | ||
| #include <boost/stacktrace/frame.hpp> | ||
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| namespace boost { namespace stacktrace { namespace detail { | ||
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| class dwfl_handle { | ||
| public: | ||
| dwfl_handle() noexcept | ||
| : dwfl_(dwfl_begin(&callbacks_)) | ||
| { | ||
| if (dwfl_) { | ||
| dwfl_linux_proc_report(dwfl_, getpid()); | ||
| dwfl_report_end(dwfl_, nullptr, nullptr); | ||
| } | ||
| } | ||
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| ~dwfl_handle() { | ||
| if (dwfl_) { | ||
| dwfl_end(dwfl_); | ||
| } | ||
| } | ||
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| const char* function(Dwarf_Addr addr) const noexcept { | ||
| if (!dwfl_ || !addr) { | ||
| return nullptr; | ||
| } | ||
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| Dwfl_Module* dwfl_module = dwfl_addrmodule (dwfl_, addr); | ||
| return dwfl_module ? dwfl_module_addrname(dwfl_module, addr) : nullptr; | ||
| } | ||
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| std::pair<const char*, std::size_t> source(Dwarf_Addr addr) const noexcept { | ||
| if (!dwfl_ || !addr) { | ||
| return {nullptr, 0}; | ||
| } | ||
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| Dwfl_Line* dwfl_line = dwfl_getsrc(dwfl_, addr); | ||
| if (!dwfl_line) { | ||
| return {nullptr, 0}; | ||
| } | ||
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| int line{0}; | ||
| const char* filename = dwfl_lineinfo(dwfl_line, nullptr, &line, nullptr, nullptr, nullptr); | ||
| return {filename, static_cast<std::size_t>(line)}; | ||
| } | ||
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| private: | ||
| Dwfl_Callbacks callbacks_{ | ||
| .find_elf = dwfl_linux_proc_find_elf, | ||
| .find_debuginfo = dwfl_standard_find_debuginfo, | ||
| .section_address = nullptr, | ||
| .debuginfo_path = nullptr, | ||
| }; | ||
| Dwfl* dwfl_; | ||
| }; | ||
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| struct to_string_using_dwfl { | ||
| std::string res; | ||
| dwfl_handle dwfl; | ||
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| void prepare_function_name(const void* addr) noexcept { | ||
| const char* function = dwfl.function(reinterpret_cast<Dwarf_Addr>(addr)); | ||
| if (function) { | ||
| res = function; | ||
| } | ||
| } | ||
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| bool prepare_source_location(const void* addr) noexcept { | ||
| auto [filename, line] = dwfl.source(reinterpret_cast<Dwarf_Addr>(addr)); | ||
| if (!filename) { | ||
| return false; | ||
| } | ||
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| res += " at "; | ||
| res += filename; | ||
| res += ':'; | ||
| res += boost::stacktrace::detail::to_dec_array(line).data(); | ||
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| return true; | ||
| } | ||
| }; | ||
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| template <class Base> class to_string_impl_base; | ||
| typedef to_string_impl_base<to_string_using_dwfl> to_string_impl; | ||
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| inline std::string name_impl(const void* addr) { | ||
| dwfl_handle dwfl; | ||
| const char* function = dwfl.function(reinterpret_cast<Dwarf_Addr>(addr)); | ||
| return function ? std::string{function} : std::string{}; | ||
| } | ||
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| } // namespace detail | ||
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| std::string frame::source_file() const { | ||
| detail::dwfl_handle dwfl; | ||
| auto [filename, _] = dwfl.source(reinterpret_cast<Dwarf_Addr>(addr_)); | ||
| return filename ? std::string{filename} : std::string{}; | ||
| } | ||
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| std::size_t frame::source_line() const { | ||
| detail::dwfl_handle dwfl; | ||
| return dwfl.source(reinterpret_cast<Dwarf_Addr>(addr_)).second; | ||
| } | ||
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| }} // namespace boost::stacktrace | ||
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| #endif // BOOST_STACKTRACE_DETAIL_LIBDWFL_IMPLS_HPP |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| // Distributed under the Boost Software License, Version 1.0. (See | ||
| // accompanying file LICENSE_1_0.txt or copy at | ||
| // http://www.boost.org/LICENSE_1_0.txt) | ||
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| #define BOOST_STACKTRACE_INTERNAL_BUILD_LIBS | ||
| #define BOOST_STACKTRACE_USE_DWFL | ||
| #define BOOST_STACKTRACE_LINK | ||
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| #ifndef _GNU_SOURCE | ||
| # define _GNU_SOURCE | ||
| #endif | ||
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| #include <boost/stacktrace/detail/frame_unwind.ipp> | ||
| #include <boost/stacktrace/safe_dump_to.hpp> |
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