2009-12-08 18:46:35 +00:00
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<head>
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<title>Status & Roadmap</title>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<meta name="Author" content="Mike Pall">
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2012-01-23 21:42:30 +00:00
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<meta name="Copyright" content="Copyright (C) 2005-2012, Mike Pall">
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2009-12-08 18:46:35 +00:00
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ul li { padding-bottom: 0.3em; }
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</head>
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<body>
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<div id="site">
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<a href="http://luajit.org"><span>Lua<span id="logo">JIT</span></span></a>
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</div>
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<div id="head">
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<h1>Status & Roadmap</h1>
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</div>
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<div id="nav">
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<ul><li>
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<a href="luajit.html">LuaJIT</a>
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<ul><li>
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2012-10-14 19:48:04 +00:00
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<a href="http://luajit.org/download.html">Download <span class="ext">»</span></a>
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</li><li>
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2009-12-08 18:46:35 +00:00
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<a href="install.html">Installation</a>
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</li><li>
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<a href="running.html">Running</a>
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2010-11-09 17:11:35 +00:00
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</li></ul>
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</li><li>
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<a href="extensions.html">Extensions</a>
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<ul><li>
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2011-01-20 21:14:17 +00:00
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<a href="ext_ffi.html">FFI Library</a>
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<ul><li>
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<a href="ext_ffi_tutorial.html">FFI Tutorial</a>
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</li><li>
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<a href="ext_ffi_api.html">ffi.* API</a>
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</li><li>
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<a href="ext_ffi_semantics.html">FFI Semantics</a>
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</li></ul>
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</li><li>
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2010-11-09 17:11:35 +00:00
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<a href="ext_jit.html">jit.* Library</a>
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2009-12-08 18:46:35 +00:00
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</li><li>
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2010-11-09 17:11:35 +00:00
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<a href="ext_c_api.html">Lua/C API</a>
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2009-12-08 18:46:35 +00:00
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</li></ul>
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</li><li>
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<a class="current" href="status.html">Status</a>
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<ul><li>
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<a href="changes.html">Changes</a>
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</li></ul>
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</li><li>
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<a href="faq.html">FAQ</a>
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</li><li>
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2010-03-19 20:01:14 +00:00
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<a href="http://luajit.org/performance.html">Performance <span class="ext">»</span></a>
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</li><li>
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2012-05-31 21:54:44 +00:00
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<a href="http://wiki.luajit.org/">Wiki <span class="ext">»</span></a>
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</li><li>
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2012-05-04 19:58:52 +00:00
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<a href="http://luajit.org/list.html">Mailing List <span class="ext">»</span></a>
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2009-12-08 18:46:35 +00:00
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</li></ul>
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</div>
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<div id="main">
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<p>
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2012-10-14 19:48:04 +00:00
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The <span style="color: #0000c0;">LuaJIT 1.x</span> series represents
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2010-03-28 17:26:33 +00:00
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the current <span style="color: #0000c0;">stable branch</span>.
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2012-05-09 16:11:35 +00:00
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Only a single bug has been discovered in the last three years. So, if
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2009-12-08 18:46:35 +00:00
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you need a rock-solid VM, you are encouraged to fetch the latest
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release of LuaJIT 1.x from the <a href="http://luajit.org/download.html"><span class="ext">»</span> Download</a>
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page.
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</p>
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<p>
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2012-10-14 19:48:04 +00:00
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<span style="color: #c00000;">LuaJIT 2.0</span> is the currently active
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<span style="color: #c00000;">development branch</span> in beta test.
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It has <a href="http://luajit.org/performance.html"><span class="ext">»</span> much better performance</a> than
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LuaJIT 1.x and runs on many more platforms and architectures.
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It's nearing a stable release, so you should definitely
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2010-03-04 18:07:38 +00:00
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start to evaluate it for new projects right now.
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2009-12-08 18:46:35 +00:00
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</p>
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<h2>Current Status</h2>
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<p>
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2012-10-14 19:48:04 +00:00
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LuaJIT ought to run all Lua 5.1-compatible source code just fine.
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It's considered a serious bug if the VM crashes or produces unexpected
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results — please report this.
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</p>
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<p>
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Known incompatibilities and issues in LuaJIT 2.0:
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2009-12-08 18:46:35 +00:00
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</p>
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<ul>
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<li>
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2012-10-14 19:48:04 +00:00
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There are some differences in <b>implementation-defined</b> behavior.
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These either have a good reason, are arbitrary design choices
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2009-12-08 18:46:35 +00:00
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or are due to quirks in the VM. The latter cases may get fixed if a
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demonstrable need is shown.
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</li>
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<li>
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2012-10-14 19:48:04 +00:00
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The Lua <b>debug API</b> is missing a couple of features (return
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hooks for non-Lua functions) and shows slightly different behavior
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in LuaJIT (no per-coroutine hooks, no tail call counting).
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2009-12-08 18:46:35 +00:00
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</li>
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<li>
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Some checks are missing in the JIT-compiled code for obscure situations
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with <b>open upvalues aliasing</b> one of the SSA slots later on (or
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vice versa). Bonus points, if you can find a real world test case for
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this.
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</li>
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2010-03-04 18:07:38 +00:00
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<li>
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Currently some <b>out-of-memory</b> errors from <b>on-trace code</b> are not
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handled correctly. The error may fall through an on-trace
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2012-10-14 19:48:04 +00:00
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<tt>pcall</tt> or it may be passed on to the function set with
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<tt>lua_atpanic</tt> on x64. This issue will be fixed in LuaJIT 2.1.
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2009-12-08 18:46:35 +00:00
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</li>
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</ul>
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<h2>Roadmap</h2>
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<p>
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2011-02-11 12:50:01 +00:00
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Please refer to the
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2012-06-07 21:45:32 +00:00
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<a href="http://www.freelists.org/post/luajit/LuaJIT-Roadmap-20122013"><span class="ext">»</span> LuaJIT
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2012-10-14 19:48:04 +00:00
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Roadmap 2012/2013</a> for details.
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</p>
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<p>
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2009-12-08 18:46:35 +00:00
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</p>
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<br class="flush">
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</div>
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<div id="foot">
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<hr class="hide">
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2012-01-23 21:42:30 +00:00
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Copyright © 2005-2012 Mike Pall
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2009-12-08 18:46:35 +00:00
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<span class="noprint">
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·
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<a href="contact.html">Contact</a>
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</span>
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