Reflection in C++ as per P2996 ☐ Syntax and examples • Reflection libraries! Python bindings ABI hashing (boost::abi_hash?) A duck-typed std::any (boost::virtual_any?) • Alternatives ways to achieve “reflection” possible! ## Now let's do some actual library design • Automatic python bindings • Automatic type ABI hash • A better std::any with duck typing ## Python bindings ## A fan favorite, and one of the most can be done easily • Customizations are trickier / not DRY We have two potential approaches ## ABI hashing ## Setting the stage - Why is a type's hash useful? • Say you had a unique hash for a type’s

’ alt=‘OCR图片’/> 第四部分 解决办法 ’ alt=‘OCR图片’/> GoLLVM问题解决 ASM的支持 汇编指令转换 Plan9 -> gnu asm ABI转换： Plan9: no callee save, stack-based GoLLVM 基于C的calling convention save all called-save regs

Register renaming  • ABI registers implement a SW contract • They do not correspond to the actual execution - Conversion of universally be the best option? Only representative performance testing will show ## Example - hashing uint32_t hash_fnvla(const char* key, const size_t len) { uint32_t hash = 0x811c9dc5; for cmp rsi, rcx 75 ec jne L11b0 L11c4: c3 ret 66 66 2e 0f 1f 84 00 nop 11 00 00 00 00 ## Example - hashing uint32_t hash_fnvla(const char* key, const size_t len) { uint32_t hash = 0x811c9dc5; for

The type HashMap stores a mapping of keys of type K to values of type V. It does this via a hashing function, which determines how it places these keys and values into memory. Many different programming borrowing rules. Hashing Function By default, HashMap uses a cryptographically secure hashing function that can provide resistance to Denial of Service (DoS) attacks. This is not the fastest hashing algorithm scratch; crates.io has libraries that others have shared that provide hashers implementing many common hashing algorithms. 191 Summary Vectors, strings, and hash maps will take you far in programs where you

$ pip install https://vllm-wheels.s3.us-west-2.amazonaws.com/nightly/vllm-${VLLM_VERSION} →-cp38-abi3-manylinux1_x86_64.whl $ # You can also access a specific commit $ # export VLLM_COMMIT=... $ # install https://vllm-wheels.s3.us-west-2.amazonaws.com/${VLLM_COMMIT}/vllm-$ →{VLLM_VERSION}-cp38-abi3-manylinux1_x86_64.whl ``` ## 1.1.3 Build from source You can also build and install vLLM from source: than just discrete tokens, we can use different hashing methods to handle the caching of inputs of different modalities. For example, perceptual hashing for images to cache similar input images. ## 1

$ pip install https://vllm-wheels.s3.us-west-2.amazonaws.com/nightly/vllm-${VLLM_VERSION} →-cp38-abi3-manylinux1_x86_64.whl $ # You can also access a specific commit $ # export VLLM_COMMIT=... $ # install https://vllm-wheels.s3.us-west-2.amazonaws.com/${VLLM_COMMIT}/vllm-$ →{VLLM_VERSION}-cp38-abi3-manylinux1_x86_64.whl ``` ## 1.1.3 Build from source You can also build and install vLLM from source: than just discrete tokens, we can use different hashing methods to handle the caching of inputs of different modalities. For example, perceptual hashing for images to cache similar input images. ## 1

thread local • Each thread has its own instance of an object with thread duration ## What is an ABI? • ABI (application binary interface) is the platform-specific specification of how entities defined in conventions for making system calls ## - On Linux, GCC and Clang use the Itanium ABI; On Windows, MSVC uses its own ABI ## Name Mangling • Name mangling refers to the way in which entity names in a TU reflect these addresses • It emits executable code ## • The compiler and the linker must agree on the ABI • Both must understand object code in exactly the same way ## Loading and Running ## • The operating

$ pip install https://vllm-wheels.s3.us-west-2.amazonaws.com/nightly/vllm-${VLLM_VERSION} →-cp38-abi3-manylinux1_x86_64.whl $ # You can also access a specific commit $ # export VLLM_COMMIT=... $ # install https://vllm-wheels.s3.us-west-2.amazonaws.com/${VLLM_COMMIT}/vllm-$ →{VLLM_VERSION}-cp38-abi3-manylinux1_x86_64.whl ``` ## 1.1.3 Build from source You can also build and install vLLM from source: than just discrete tokens, we can use different hashing methods to handle the caching of inputs of different modalities. For example, perceptual hashing for images to cache similar input images. ## 1

4 Packaging existing binaries ..... 44 6.5 Understanding packaging ..... 46 6.6 Define package ABI compatibility ..... 48 6.7 Inspecting packages ..... 54 6.8 Packaging approaches ..... 55 6.9 Tools 4 Creating and reusing packages based on Makefiles ..... 170 12.5 How to manage the GCC >= 5 ABI ..... 172 12.6 Using Visual Studio 2017 - CMake integration ..... 173 12.7 How to manage C++ standard libstdc++ that represent the old ABI compatibility for better compatibility. Your compiler default is likely the new ABI so you might want to change it to libstdc++11 to use the new ABI compliant with CXX11 directives

4 Packaging existing binaries ..... 41 6.5 Understanding packaging ..... 43 6.6 Define package ABI compatibility ..... 45 6.7 Inspecting packages 51 6.8 Packaging approaches 52 6.9 Tools for package libstdc++ that represent the old ABI compatibility for better compatibility. Your compiler default is likely the new ABI so you might want to change it to libstdc++11 to use the new ABI compliant with CXX11 directives user space if specified. Any doubts? Please check out our FAQ section or . ### 6.6 Define package ABI compatibility Each package recipe can generate N binary packages from it, depending on three things: