// Copyright Antony Polukhin, 2016-2020.
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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_LOCATION_FROM_SYMBOL_HPP
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#define BOOST_STACKTRACE_DETAIL_LOCATION_FROM_SYMBOL_HPP
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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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#if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
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# include <dlfcn.h>
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#else
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# include <boost/winapi/dll.hpp>
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#endif
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namespace boost { namespace stacktrace { namespace detail {
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#if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
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class location_from_symbol {
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::Dl_info dli_;
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public:
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explicit location_from_symbol(const void* addr) BOOST_NOEXCEPT
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: dli_()
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{
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if (!::dladdr(const_cast<void*>(addr), &dli_)) { // `dladdr` on Solaris accepts nonconst addresses
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dli_.dli_fname = 0;
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}
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}
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bool empty() const BOOST_NOEXCEPT {
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return !dli_.dli_fname;
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}
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const char* name() const BOOST_NOEXCEPT {
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return dli_.dli_fname;
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}
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};
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class program_location {
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public:
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const char* name() const BOOST_NOEXCEPT {
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return 0;
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}
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};
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#else
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class location_from_symbol {
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BOOST_STATIC_CONSTEXPR boost::winapi::DWORD_ DEFAULT_PATH_SIZE_ = 260;
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char file_name_[DEFAULT_PATH_SIZE_];
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public:
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explicit location_from_symbol(const void* addr) BOOST_NOEXCEPT {
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file_name_[0] = '\0';
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boost::winapi::MEMORY_BASIC_INFORMATION_ mbi;
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if (!boost::winapi::VirtualQuery(addr, &mbi, sizeof(mbi))) {
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return;
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}
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boost::winapi::HMODULE_ handle = reinterpret_cast<boost::winapi::HMODULE_>(mbi.AllocationBase);
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if (!boost::winapi::GetModuleFileNameA(handle, file_name_, DEFAULT_PATH_SIZE_)) {
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file_name_[0] = '\0';
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return;
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}
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}
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bool empty() const BOOST_NOEXCEPT {
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return file_name_[0] == '\0';
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}
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const char* name() const BOOST_NOEXCEPT {
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return file_name_;
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}
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};
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class program_location {
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BOOST_STATIC_CONSTEXPR boost::winapi::DWORD_ DEFAULT_PATH_SIZE_ = 260;
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char file_name_[DEFAULT_PATH_SIZE_];
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public:
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program_location() BOOST_NOEXCEPT {
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file_name_[0] = '\0';
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const boost::winapi::HMODULE_ handle = 0;
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if (!boost::winapi::GetModuleFileNameA(handle, file_name_, DEFAULT_PATH_SIZE_)) {
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file_name_[0] = '\0';
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}
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}
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const char* name() const BOOST_NOEXCEPT {
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return file_name_[0] ? file_name_ : 0;
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}
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};
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#endif
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}}} // namespace boost::stacktrace::detail
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#endif // BOOST_STACKTRACE_DETAIL_LOCATION_FROM_SYMBOL_HPP
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