dolphin/Source/Core/Common/Misc.cpp

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// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <cstddef>
#include <cstring>
#include <errno.h>
#include "Common/CommonFuncs.h"
// Generic function to get last error message.
// Call directly after the command or use the error num.
// This function might change the error code.
std::string GetLastErrorMsg()
{
const size_t buff_size = 256;
char err_str[buff_size];
#ifdef _WIN32
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
err_str, buff_size, nullptr);
#else
// Thread safe (XSI-compliant)
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if (strerror_r(errno, err_str, buff_size))
return "";
#endif
return std::string(err_str);
}