<function name="util.funcinfo" parent="jit" type="libraryfunc"> <description> Retrieves LuaJIT information about a given function, similarly to <page>debug.getinfo</page>. Possible table fields: * linedefined: as for <page>debug.getinfo</page> * lastlinedefined: as for <page>debug.getinfo</page> * params: the number of parameters the function takes * stackslots: the number of stack slots the function's local variable use * upvalues: the number of upvalues the function uses * bytecodes: the number of bytecodes it the compiled function * gcconsts: the number of garbage collectable constants * nconsts: the number of lua_Number (double) constants * children: Boolean representing whether the function creates closures * currentline: as for <page>debug.getinfo</page> * isvararg: if the function is a vararg function * source: as for <page>debug.getinfo</page> * loc: a string describing the source and currentline, like "&amp;lt;source&amp;gt;:&amp;lt;line&amp;gt;" * loc: a string describing the source and currentline, like "&lt;source&gt;:&lt;line&gt;" * ffid: the fast function id of the function (if it is one). In this case only upvalues above and addr below are valid * addr: the address of the function (if it is not a Lua function). If it's a C function rather than a fast function, only upvalues above is valid* </description> <realm>Shared and Menu</realm> <args> <arg name="func" type="function">Function or Proto to retrieve info about.</arg> <arg name="pos" type="number" default="0"></arg> </args> <rets> <ret name="" type="table">Information about the supplied function/proto.</ret> </rets> </function> <example> <description>Demonstrates output of this function.</description> <code> PrintTable(jit.util.funcinfo(print)) local print = print _G.print = function(...) print(...) end -- redefine print PrintTable(jit.util.funcinfo(print)) </code> <output> ``` -- First PrintTable output: addr = 1773317824 ffid = 25 upvalues = 1 -- Second PrintTable output: linedefined = 1 currentline = 1 params = 0 stackslots = 2 source = @lua_run lastlinedefined = 1 children = false upvalues = 1 nconsts = 0 isvararg = true loc = lua_run:1 bytecodes = 5 gcconsts = 0 ``` </output> </example>