local ffi = require("ffi")
ffi.cdef[[int printf(const char *fmt, ...);]]
ffi.C.printf("Hello %s!\n", "wiki")

The LuaJIT wiki has been created to gather community resources about developing programs using LuaJIT. Everyone is welcome to contribute relevant material -- please refer to the Wiki FAQ for details.

Directory of Content

LuaJIT Extensions

• FFI Bindings - A list of available FFI bindings
• FFI Native Libraries - Pure Lua libraries leveraging FFI
• FFI Parameterized Types - Examples for the FFI Parameterized Type Feature
• FFI Callback Restrictions: Encountered Cases - Known restritions of FFI Callbacks
• FFI Callbacks with pass by value structs - Example for making FFI Callbacks with pass by value structs
• FFI Knowledge

Performance Tuning and Testing

• NYI - Things which are likely to cause NYI aborts from the JIT compiler
• Reducing Testcases - Hints for reducing the size of test cases
• Numerical Computing Performance Guide - Tips for writing performant Lua code

LuaJIT Internals

• Bytecode 2.0 - LuaJIT 2.0 Bytecode reference
• SSA IR 2.0 - LuaJIT 2.0 SSA IR reference
• Optimizations - Optimizations performed by LuaJIT
• JIT Compiler API - The jit.* API allows to control/watch the JIT compiler
• New Garbage Collector - Design of the new garbage collector for LuaJIT 3.0
• Allocation Sinking Optimization - Design of allocation optimizations used in LuaJIT 2.0
• Extended BNF - The Complete Syntax of LuaJIT including FFI literals and Lua 5.2 extensions

System Integration

• Linux binfmt_misc - Running LuaJIT compiled bytecode "directly" using binfmt_misc kernel feature
• Where LuaJIT Is Used - Directory of projects that embed LuaJIT
• Architecture Support - Informations about running LuaJIT on different architectures

LuaJIT Development

• Open Sponsorships - Planned features and ports in need of a sponsor
• LuaJIT Documentation from v2.1 repo
• DynASM API Documentation

About the LuaJIT Wiki

• Wiki FAQ - Frequently Asked Questions about the wiki
• Wiki Wishlist - Wishlist for the wiki
• Test - Testing ground for the wiki and wiki text formatting