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.

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 - Bytecode reference
• SSA IR - 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 2.1

System Integration

• Linux binfmt_misc - Running LuaJIT compiled bytecode "directly" using binfmt_misc kernel feature

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