bb33bb/ucxxrt

The Universal C++ RunTime library, supporting kernel-mode C++ exception-handler and STL.

Universal C++ RunTime (UCXXRT)

• 简体中文

UserMode support will be removed starting 03/29/2022. The last version to support UserMode is e2f159f8f, UserMode please use VC-LTL5

1. About

ucxxrt is a open source rutime library which based on MSVC.The highlight of this project is that it can be used in kernel-mode drivers.
It gives you the same experience as user-mode application development in C++ when developing kernel-mode drivers.

Before ucxxrt was born,in order to use C++ on kernel-mode drivers, I use (KTL、ustd、...).

But there are several problems，like it isn't support C++ exception and it cost much time on implementing new features which provided by the latest ISO,then ucxxrt was born.

1.1 Principle

• In kernel-mode driver mode,forced disable kernel-mode flag by using property sheet ,it makes the compiler support C++ exceptions.
• Implement the exception functions such as throw、catch. Simulated the exception dispatcher in throw.

1.2 Features

• support x86, x64, ARM(experimental), ARM64(experimental).
• support new/delete operators.
• support C++ exception (/EHa, /EHsc).
• support SAFESEH、GS (Buffer Security Check).
• support STL (not fully).
• support static objects.

List of features that are not supported at this time↓

1.3 Example

See project unittest for more Infomation.

void Test$ThrowUnknow()
{
    try
    {
        try
        {
            try
            {
                throw std::wstring();
            }
            catch (int& e)
            {
                ASSERT(false);
                LOG(DPFLTR_IHVDRIVER_ID, DPFLTR_ERROR_LEVEL, "Catch Exception: %d\n", e);
            }
        }
        catch (std::string& e)
        {
            ASSERT(false);
            LOG(DPFLTR_IHVDRIVER_ID, DPFLTR_ERROR_LEVEL, "Catch Exception: %s\n", e.c_str());
        }
    }
    catch (...)
    {
        LOG(DPFLTR_IHVDRIVER_ID, DPFLTR_ERROR_LEVEL, "Catch Exception: ...\n");
    }
}

void Test$HashMap()
{
    auto Rand = std::mt19937_64(::rand());
    auto Map = std::unordered_map<uint32_t, std::string>();
    for (auto i = 0u; i < 10; ++i)
    {
        Map[i] = std::to_string(Rand());
    }

    for (const auto& Item : Map)
    {
        LOG(DPFLTR_IHVDRIVER_ID, DPFLTR_ERROR_LEVEL,
            "map[%ld] = %s\n", Item.first, Item.second.c_str());
    }
}

2. How to use

First, rename DriverEntry to DriverMain。

2.1 Option 1 (recommend)

Right click on the project and select "Manage NuGet Packages", then search for ucxxrt and choose the version that suits you, and finally click "Install".

2.2 Option 2

1. Download the latest package from release and unzip it.

2. Add the property sheet ucxxrt.props to yor project.

3. How to compile

IDE：Visual Studio 2019 or higher (Compiling for ARM/ARM64 requires Visual Studio 2022)

• git clone --recurse-submodules https://github.com/MiroKaku/ucxxrt.git
• Open ucxxrt.sln and compile.

4. Reference and Acknowledgement

• Microsoft's C++ Standard Library
• Chuyu-Team/VC-LTL
• RetrievAL

Thanks to these excellent projects for help me on developing ucxxrt.

5. List of features that are not supported at this time

• Thread Local Storage (TLS): thread_local、TlsAlloc ...
• std::thread
• std::filesystem
• std::chrono
• std::stacktrace_entry
• std::locale
• std::stream (std::fstream、std::iostream、std::cin、std::cout、std::cerr)
• std::mutex、std::shared_mutex
• std::future
• std::condition_variable
• std::latch
• std::semaphore (std::counting_semaphore、std::binary_semaphore)
• ...