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Not logged in [Login]. Performance Tuning and Testing. About the LuaJIT Wiki. Int printf(const char *fmt, .);]. 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. A list of available FFI bindings. Pure Lua libraries leveraging FFI. Examples for the FFI Parameterized Type Feature. Performance Tuning and Testing. Hints for reducing the size of test cases. SSA IR 2.0.

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Not logged in [Login]. Performance Tuning and Testing. About the LuaJIT Wiki. Int printf(const char *fmt, .);]. 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. A list of available FFI bindings. Pure Lua libraries leveraging FFI. Examples for the FFI Parameterized Type Feature. Performance Tuning and Testing. Hints for reducing the size of test cases. SSA IR 2.0.

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https://wiki.luajit.org

Not logged in [Login]. Performance Tuning and Testing. About the LuaJIT Wiki. Int printf(const char *fmt, .);]. 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. A list of available FFI bindings. Pure Lua libraries leveraging FFI. Examples for the FFI Parameterized Type Feature. Performance Tuning and Testing. Hints for reducing the size of test cases. SSA IR 2.0.

INTERNAL PAGES

wiki.luajit.org

1

List of Available Packages

http://wiki.luajit.org/FFI-Native-Libraries

Not logged in [Login]. List of Available Packages. As Lua is a very succinct language, with a minimum of pre-installed libraries, much of the power available to a Lua programmer comes from performing interop calls to external libraries. LuaJIT in particular, provides excellent support for calling external libraries. If what you want is access to a pre-compiled library that is on your target system, then you want to use a FFI Bindings. No dependencies on external libraries. Standard i/o with buffers.

2

Home

http://wiki.luajit.org/edit/Home

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3

Reducing Test Cases for Bugs

http://wiki.luajit.org/Reducing-Testcases

Not logged in [Login]. Reducing Test Cases for Bugs. These things are hard to catch. Try all the options. Turn the compiler off. So you think you've found a bug in LuaJIT? Hold your breath for a minute - are you sure it's not your mistake? Run your code with PUC. And check that you don't see the bug, and that you do with. Check that you're not relying on any undefined behaviour. I once thought I had found a bug, but in fact I was relying on the order in which. Traversed a hash table. Both. In the middle ...

4

LuaJIT 2.0 SSA IR

http://wiki.luajit.org/SSA-IR-2.0

Not logged in [Login]. LuaJIT 2.0 SSA IR. The following document describes the Intermediate Representation ( IR. Used by the JIT-compiler of LuaJIT 2.0. The trace-compiler records bytecode instructions, following the control-flow, and emits the corresponding IR instructions on-the-fly. The IR has the following characteristics:. The IR is in SSA ( Static Single Assignment. Which are composed using extension instructions (. The IR is typed: every instruction has an output data type. The modeled types c...

5

Introduction

http://wiki.luajit.org/New-Garbage-Collector

Not logged in [Login]. Two-Color Mark and Sweep. Tri-Color Incremental Mark and Sweep. Quad-Color Optimized Incremental Mark and Sweep. Block and Mark Bitmaps. The following design document describes the the new garbage collector (GC) to be introduced with LuaJIT 3.0. This document is very much a work in progress right now. Anything may change for the actual implementation. No code is available, yet. Note to potential sponsors: This feature is in need of sponsorship! The garbage collector used by LuaJIT ...

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luajit.org

Installation

http://luajit.org/install.html

LuaJIT is only distributed as a source package. This page explains how to build and install LuaJIT with different operating systems and C compilers. For the impatient (on POSIX systems):. Make & sudo make install. LuaJIT currently builds out-of-the box on most systems. Here's the compatibility matrix for the supported combinations of operating systems, CPUs and compilers:. MSVC SDK v7.0. PSP2 ( PS VITA. GCC 41 ( PS3. XEDK ( Xbox 360. Sets some configuration variables. Has settings for installing. The sup...

luajit.org

Performance: PPC/e500

http://luajit.org/performance_e500.html

FreeScale MPC8572E 1.5 GHz PPC/e500v2.

luajit.org

Frequently Asked Questions (FAQ)

http://luajit.org/faq.html

Frequently Asked Questions (FAQ). Q: Where can I learn more about LuaJIT and Lua? The LuaJIT mailing list. Focuses on topics related to LuaJIT. Gathers community resources about LuaJIT. News about Lua itself can be found at the Lua mailing list. The mailing list archives are worth checking out for older postings about LuaJIT. The main Lua.org site. Of the language and links to books and papers about Lua. The community-managed Lua Wiki. Has information about diverse topics. Search for: Trace Compiler.

luajit.org

FFI Semantics

http://luajit.org/ext_ffi_semantics.html

This page describes the detailed semantics underlying the FFI library and its interaction with both Lua and C code. Given that the FFI library is designed to interface with C code and that declarations can be written in plain C syntax, it closely follows the C language semantics. Wherever possible. Some minor concessions are needed for smoother interoperation with Lua language semantics. To declare C types or external symbols. A C compiler. The body of. C function definitions is simply ignored. Complex n...

luajit.org

jit.* Library

http://luajit.org/ext_jit.html

The functions in this built-in module control the behavior of the JIT compiler engine. Note that JIT-compilation is fully automatic — you probably won't need to use any of the following functions unless you have special needs. Turns the whole JIT compiler on (default) or off. These functions are typically used with the command line options. Flushes the whole cache of compiled code. Jiton(func true [,true false]). Jitoff(func true [,true false]). Jitflush(func true [,true false]). As the first argument.

luajit.org

Status

http://luajit.org/status.html

Is the current stable branch. This branch is in feature-freeze — new features will only be added to LuaJIT 2.1. LuaJIT ought to run all Lua 5.1-compatible source code just fine. It's considered a serious bug if the VM crashes or produces unexpected results — please report this. Known incompatibilities and issues in LuaJIT 2.0:. There are some differences in implementation-defined. The Lua debug API. Some checks are missing in the JIT-compiled code for obscure situations with open upvalues aliasing.

luajit.org

ffi.* API Functions

http://luajit.org/ext_ffi_api.html

This page describes the API functions provided by the FFI library in detail. It's recommended to read through the introduction. And the FFI tutorial. Mdash; An abstract C type declaration (a Lua string). Mdash; A C type object. This is a special kind of cdata. It serves as a cdata. Mdash; A C data object. It holds a value of the corresponding ctype. Mdash; A C type specification which can be used for most of the API functions. Either a cdecl. Serving as a template type. The number of elements (. The cont...

luajit.org

Performance: ARM

http://luajit.org/performance_arm.html

TI OMAP4460 1.2 GHz Cortex-A9.

luajit.org

Extensions

http://luajit.org/extensions.html

LuaJIT is fully upwards-compatible with Lua 5.1. It supports all standard Lua library functions. And the full set of Lua/C API functions. LuaJIT is also fully ABI-compatible to Lua 5.1 at the linker/dynamic loader level. This means you can compile a C module against the standard Lua headers and load the same shared library from either Lua or LuaJIT. LuaJIT extends the standard Lua VM with new functionality and adds several extension modules. Please note this page is only about. Mdash; Bitwise operations.

luajit.org

Download

http://luajit.org/download.html

Note: The tar.gz and zip files of each release have the same contents — you only need to download one of them. Repository always contains the latest fixes and updates between releases. You can clone it with the following command:. Git clone http:/ luajit.org/git/luajit-2.0.git. Note: this is not a browsable resource, the repository is only accessible with a git client. This creates a new directory tree under. Change to it and follow the usual build instructions. Use. Git checkout v2.1.

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Home

Not logged in [Login]. Performance Tuning and Testing. About the LuaJIT Wiki. Int printf(const char *fmt, .);]. 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. A list of available FFI bindings. Pure Lua libraries leveraging FFI. Examples for the FFI Parameterized Type Feature. Performance Tuning and Testing. Hints for reducing the size of test cases. SSA IR 2.0.

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