Function getStackTrace

src/system.cpp:668–725

std::string getStackTrace() {
	void* stack[128];
	int stackLen = LENGTHOF(stack);
	std::string s;

#if defined ARCH_LIN || defined ARCH_MAC
	stackLen = backtrace(stack, stackLen);

	// Skip the first line because it's this function.
	for (int i = 1; i < stackLen; i++) {
		// Get symbol info from stack address
		Dl_info info = {};
		if (dladdr(stack[i], &info)) {
			// Ignore error
		}

		// Binary/library filename
		s += info.dli_fname ? info.dli_fname : "??";
		s += ": ";

		// Attempt to demangle C++ symbol name
		if (info.dli_sname) {
			char* demangled = abi::__cxa_demangle(info.dli_sname, NULL, NULL, NULL);
			if (demangled) {
				s += demangled;
				free(demangled);
			}
			else {
				s += info.dli_sname;
			}
		}
		else {
			s += "??";
		}

		s += " +";
		ptrdiff_t offset = (char*) stack[i] - (char*) info.dli_saddr;
		s += string::f("0x%x", offset);
		s += "\n";
	}
#elif defined ARCH_WIN
	HANDLE process = GetCurrentProcess();
	SymInitialize(process, NULL, true);
	stackLen = CaptureStackBackTrace(0, stackLen, stack, NULL);

	SYMBOL_INFO* symbol = (SYMBOL_INFO*) calloc(sizeof(SYMBOL_INFO) + 256, 1);
	symbol->MaxNameLen = 255;
	symbol->SizeOfStruct = sizeof(SYMBOL_INFO);

	for (int i = 1; i < stackLen; i++) {
		SymFromAddr(process, (DWORD64) stack[i], 0, symbol);
		s += string::f("%d: %s 0x%" PRIx64 "\n", stackLen - i - 1, symbol->Name, symbol->Address);
	}
	free(symbol);
#endif

	return s;
}