61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
#include "backtrace.h"
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#include <execinfo.h>
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#include <signal.h>
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#include <iostream>
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#include <unistd.h>
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#include <cxxabi.h>
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#include <string>
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using std::string;
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//TODO Use the following? https://github.com/bombela/backward-cpp
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namespace cpputils {
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//TODO Refactor (for example: RAII or at least try{}finally{} instead of not-exceptionsafe free())
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std::string demangle(const string &mangledName) {
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string result;
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int status = -10;
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char *demangledName = abi::__cxa_demangle(mangledName.c_str(), NULL, NULL, &status);
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if (status == 0) {
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result = demangledName;
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} else {
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result = mangledName;
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}
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free(demangledName);
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return result;
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}
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std::string pretty(const string &backtraceLine) {
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size_t startMangledName = backtraceLine.find('(');
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size_t endMangledName = backtraceLine.find('+');
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if (startMangledName == string::npos || endMangledName == string::npos) {
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return backtraceLine;
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}
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return demangle(backtraceLine.substr(startMangledName+1, endMangledName-startMangledName-1)) + ": (" + backtraceLine.substr(0, startMangledName) + backtraceLine.substr(endMangledName);
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}
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void print_backtrace(void *array[], size_t size) {
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char **ptr = backtrace_symbols(array, size);
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for (size_t i = 0; i < size; ++i) {
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std::cerr << pretty(ptr[i]) << "\n";
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}
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free(ptr);
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}
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void sigsegv_handler(int) {
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constexpr unsigned int MAX_SIZE = 100;
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void *array[MAX_SIZE];
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size_t size = backtrace(array, MAX_SIZE);
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std::cerr << "Error: SIGSEGV" << std::endl;
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print_backtrace(array, size);
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exit(1);
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}
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void showBacktraceOnSigSegv() {
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signal(SIGSEGV, sigsegv_handler);
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}
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}
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