86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
// Copyright 2019 The MediaPipe Authors.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#ifndef MEDIAPIPE_FRAMEWORK_DEMANGLE_H_
|
|
#define MEDIAPIPE_FRAMEWORK_DEMANGLE_H_
|
|
|
|
#ifndef MEDIAPIPE_HAS_CXA_DEMANGLE
|
|
// We only support some compilers that support __cxa_demangle.
|
|
// TODO: Checks if Android NDK has fixed this issue or not.
|
|
#if defined(__ANDROID__) && (defined(__i386__) || defined(__x86_64__))
|
|
#define MEDIAPIPE_HAS_CXA_DEMANGLE 0
|
|
#elif (__GNUC__ >= 4 || (__GNUC__ >= 3 && __GNUC_MINOR__ >= 4)) && \
|
|
!defined(__mips__)
|
|
#define MEDIAPIPE_HAS_CXA_DEMANGLE 1
|
|
#elif defined(__clang__) && !defined(_MSC_VER)
|
|
#define MEDIAPIPE_HAS_CXA_DEMANGLE 1
|
|
#else
|
|
#define MEDIAPIPE_HAS_CXA_DEMANGLE 0
|
|
#endif
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string>
|
|
#if MEDIAPIPE_HAS_CXA_DEMANGLE
|
|
#include <cxxabi.h>
|
|
#endif
|
|
|
|
namespace mediapipe {
|
|
|
|
// Demangle a mangled symbol name and return the demangled name.
|
|
// If 'mangled' isn't mangled in the first place, this function
|
|
// simply returns 'mangled' as is.
|
|
//
|
|
// This function is used for demangling mangled symbol names such as
|
|
// '_Z3bazifdPv'. It uses abi::__cxa_demangle() if your compiler has
|
|
// the API. Otherwise, this function simply returns 'mangled' as is.
|
|
//
|
|
// Currently, we support only GCC 3.4.x or later for the following
|
|
// reasons.
|
|
//
|
|
// - GCC 2.95.3 doesn't have cxxabi.h
|
|
// - GCC 3.3.5 and ICC 9.0 have a bug. Their abi::__cxa_demangle()
|
|
// returns junk values for non-mangled symbol names (ex. function
|
|
// names in C linkage). For example,
|
|
// abi::__cxa_demangle("main", 0, 0, &status)
|
|
// returns "unsigned long" and the status code is 0 (successful).
|
|
//
|
|
// Also,
|
|
//
|
|
// - MIPS is not supported because abi::__cxa_demangle() is not defined.
|
|
// - Android x86 is not supported because STLs don't define __cxa_demangle
|
|
//
|
|
// Prefer using MediaPipeTypeStringOrDemangled<T>() when possible (defined
|
|
// in type_map.h).
|
|
inline std::string Demangle(const char* mangled) {
|
|
int status = 0;
|
|
char* demangled = nullptr;
|
|
#if MEDIAPIPE_HAS_CXA_DEMANGLE
|
|
demangled = abi::__cxa_demangle(mangled, nullptr, nullptr, &status);
|
|
#endif
|
|
std::string out;
|
|
if (status == 0 && demangled != nullptr) { // Demangling succeeeded.
|
|
out.append(demangled);
|
|
free(demangled);
|
|
} else {
|
|
out.append(mangled);
|
|
}
|
|
return out;
|
|
}
|
|
|
|
} // namespace mediapipe
|
|
|
|
#endif // MEDIAPIPE_FRAMEWORK_DEMANGLE_H_
|