node-ffi/node-ffi
Node Ffi
node-ffi est une bibliothèque d'interface de fonction étrangère (FFI) pour Node.js qui permet d'appeler des fonctions depuis des bibliothèques dynamiques C natives sans écrire de bindings C++ manuels. Il sert de système pour charger des objets partagés et des DLL en mémoire de processus, traduire des valeurs JavaScript en représentations binaires et exécuter des binaires externes au runtime.
Le projet utilise un wrapper autour de la bibliothèque libffi pour construire des frames d'appel et exécuter des fonctions natives avec des arguments dynamiques. Il se distingue en fournissant un gestionnaire de mémoire native pour allouer des pointeurs bruts et un système de mapping qui connecte des structures C complexes à des objets JavaScript.
La boîte à outils couvre un large éventail de capacités d'interopérabilité native, incluant la traduction automatique des types de données et la création de stubs de mémoire exécutables permettant aux bibliothèques natives de déclencher des callbacks JavaScript. Pour maintenir la réactivité du thread principal, il prend en charge un modèle d'exécution asynchrone qui décharge les appels de fonctions natives vers un pool de threads séparé.
Features
- Dynamic Library Function Executions - Provides the core ability to load external shared objects and execute native C functions directly from JavaScript.
- Foreign Function Interfaces - Provides a comprehensive interface and binding layer for seamless communication between JavaScript and native libraries.
- Memory-Mapped Data Structures - Connects complex C data structures to JavaScript objects for efficient reading and writing of structured memory blocks.
- C-to-JavaScript Type Mappings - Provides systems for converting data types specifically between C and JavaScript for memory-compatible function calls.
- C Struct Mappings - Maps complex C structures and memory blocks into JavaScript objects for reading and writing structured memory.
- Dynamic Library Loading - Loads external shared objects or DLLs into the process memory space at runtime via system call interfaces.
- Raw Memory Allocation - Provides a low-level interface for allocating raw contiguous memory buffers and manipulating C-style pointers.
- Foreign Function Interface Calls - Executes functions from shared libraries by mapping JavaScript types to native C equivalents using libffi.
- Function-Pointer Callbacks - Creates executable memory stubs that map JavaScript functions as C-style function pointers for native library callbacks.
- Native C-JavaScript Bridges - Provides an interface designed for data exchange and function calls between native C/C++ code and JavaScript.
- Native Library Wrappers - Wraps the libffi library to construct native call frames and execute functions with dynamic arguments.
- Node.js Foreign Function Interfaces - A library for calling functions from native C dynamic libraries directly within Node.js without writing manual C++ bindings.
- Pointer-Based Memory Access - Implements direct manipulation and extraction of data from raw pointers to handle C structs across the language boundary.
- Native Library Integration - Allows calling functions from external C or C++ dynamic libraries directly within Node.js without manual glue code.
- Dynamic Library Loaders - Loads shared objects and DLLs into process memory to execute external binaries at runtime.
- Native Callbacks - Maps JavaScript functions to C-style function pointers, allowing native libraries to trigger logic within the runtime.
- Asynchronous Native Calls - Offloads native function execution to a separate thread pool to prevent blocking the Node.js main event loop.
- Native Callback Stubs - Creates function pointers in memory that allow native libraries to trigger JavaScript callbacks.
- Worker Thread Patterns - Offloads native function calls to a separate thread pool to prevent blocking the JavaScript main event loop.
