Hi LuaJit List,
I am putting a few functions into a lua file, which is used as a module
(e.g., to be 'require'd in a script).
This module has a few local variable which are used in the functions. I am
not sure of the life time of these variables; will they be GC'ed when the
function refer to them?
As an example, the following lua file has buf as a local variable and buf
is used to store the output of a C function. I don't know when will LuaJit
will GC buf. Is it possible that when I call the Lua function myfun, the
local variable is GC'ed?
Thanks!
*modula_a.lua:*
ffi.cdef[[
void myfun(int input, char *buf, int bufsize);
]]
local buf = ffi.new('char[1024]')
local myfun = function(i)
ffi.C.myfun(i, buf, 1024) -- call C function to get output in buf
return ffi.string(buf) -- convert buf to Lua string
end
return { -- expose myfun, but not local variables
myfun = myfun
}
