88 lines
1.6 KiB
C++
88 lines
1.6 KiB
C++
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#include "symbol_info.hpp"
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#include <unordered_map>
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#include "../detect.hpp"
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#if MIJIN_TARGET_OS == MIJIN_OS_LINUX
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#if !defined(_GNU_SOURCE)
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#define _GNU_SOURCE
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#endif
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#include <dlfcn.h>
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#endif
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#if MIJIN_COMPILER == MIJIN_COMPILER_GCC
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#include <cxxabi.h>
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#endif
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namespace mijin
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{
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//
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// internal defines
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//
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//
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// internal constants
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//
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//
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// internal types
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//
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//
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// internal variables
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//
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static thread_local std::unordered_map<const void*, std::string> g_functionNameCache;
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//
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// internal functions
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//
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//
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// public functions
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//
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const char* lookupFunctionName(const void* function)
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{
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auto it = g_functionNameCache.find(function);
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if (it != g_functionNameCache.end()) {
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return it->second.c_str();
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}
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#if MIJIN_TARGET_OS == MIJIN_OS_LINUX
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Dl_info info;
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dladdr(function, &info);
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std::string name = demangleCPPIdentifier(info.dli_sname);
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if (name.empty()) {
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name = info.dli_sname;
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}
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#else
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std::string name = "<unknown>";
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#endif
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return g_functionNameCache.insert({function, std::move(name)}).first->second.c_str();
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}
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#if MIJIN_COMPILER == MIJIN_COMPILER_GCC
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std::string demangleCPPIdentifier(const char* identifier)
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{
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char* demangled = abi::__cxa_demangle(identifier, /* output_buffer = */ nullptr, /* length = */ nullptr, /* status = */ nullptr);
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if (demangled != nullptr)
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{
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std::string name = demangled;
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std::free(demangled); // NOLINT(cppcoreguidelines-owning-memory,cppcoreguidelines-no-malloc)
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return name;
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}
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return "";
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}
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#else
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std::string demangleCPPIdentifier(const char* /* identifier */)
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{
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return "";
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}
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#endif
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} // namespace mijin
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