1 // Copyright Antony Polukhin, 2016-2020. 2 // 3 // Distributed under the Boost Software License, Version 1.0. (See 4 // accompanying file LICENSE_1_0.txt or copy at 5 // http://www.boost.org/LICENSE_1_0.txt) 6 7 #ifndef BOOST_STACKTRACE_DETAIL_LOCATION_FROM_SYMBOL_HPP 8 #define BOOST_STACKTRACE_DETAIL_LOCATION_FROM_SYMBOL_HPP 9 10 #include <boost/config.hpp> 11 #ifdef BOOST_HAS_PRAGMA_ONCE 12 # pragma once 13 #endif 14 15 #if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__) 16 # include <dlfcn.h> 17 #else 18 # include <boost/winapi/dll.hpp> 19 #endif 20 21 namespace boost { namespace stacktrace { namespace detail { 22 23 #if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__) 24 class location_from_symbol { 25 ::Dl_info dli_; 26 27 public: location_from_symbol(const void * addr)28 explicit location_from_symbol(const void* addr) BOOST_NOEXCEPT 29 : dli_() 30 { 31 if (!::dladdr(const_cast<void*>(addr), &dli_)) { // `dladdr` on Solaris accepts nonconst addresses 32 dli_.dli_fname = 0; 33 } 34 } 35 empty() const36 bool empty() const BOOST_NOEXCEPT { 37 return !dli_.dli_fname; 38 } 39 name() const40 const char* name() const BOOST_NOEXCEPT { 41 return dli_.dli_fname; 42 } 43 }; 44 45 class program_location { 46 public: name() const47 const char* name() const BOOST_NOEXCEPT { 48 return 0; 49 } 50 }; 51 52 #else 53 54 class location_from_symbol { 55 BOOST_STATIC_CONSTEXPR boost::winapi::DWORD_ DEFAULT_PATH_SIZE_ = 260; 56 char file_name_[DEFAULT_PATH_SIZE_]; 57 58 public: 59 explicit location_from_symbol(const void* addr) BOOST_NOEXCEPT { 60 file_name_[0] = '\0'; 61 62 boost::winapi::MEMORY_BASIC_INFORMATION_ mbi; 63 if (!boost::winapi::VirtualQuery(addr, &mbi, sizeof(mbi))) { 64 return; 65 } 66 67 boost::winapi::HMODULE_ handle = reinterpret_cast<boost::winapi::HMODULE_>(mbi.AllocationBase); 68 if (!boost::winapi::GetModuleFileNameA(handle, file_name_, DEFAULT_PATH_SIZE_)) { 69 file_name_[0] = '\0'; 70 return; 71 } 72 } 73 74 bool empty() const BOOST_NOEXCEPT { 75 return file_name_[0] == '\0'; 76 } 77 78 const char* name() const BOOST_NOEXCEPT { 79 return file_name_; 80 } 81 }; 82 83 class program_location { 84 BOOST_STATIC_CONSTEXPR boost::winapi::DWORD_ DEFAULT_PATH_SIZE_ = 260; 85 char file_name_[DEFAULT_PATH_SIZE_]; 86 87 public: 88 program_location() BOOST_NOEXCEPT { 89 file_name_[0] = '\0'; 90 91 const boost::winapi::HMODULE_ handle = 0; 92 if (!boost::winapi::GetModuleFileNameA(handle, file_name_, DEFAULT_PATH_SIZE_)) { 93 file_name_[0] = '\0'; 94 } 95 } 96 97 const char* name() const BOOST_NOEXCEPT { 98 return file_name_[0] ? file_name_ : 0; 99 } 100 }; 101 #endif 102 103 }}} // namespace boost::stacktrace::detail 104 105 #endif // BOOST_STACKTRACE_DETAIL_LOCATION_FROM_SYMBOL_HPP 106