Re: LuaJIT - When using FFI, trace aborts due to "symbol not in cache"

[Benjamin Segovia <segovia.benjamin@...>]

Also, I just saw that "pairs" seems to abort the trace also but in
this case, the error message given by the trace dump is pretty clear
"NYI: FastFunc pairs". "symbol not in cache" remains however a bit
obscure :)
Ben


On Sun, May 1, 2011 at 4:45 AM, Benjamin Segovia
<segovia.benjamin@gmail.com> wrote:
> I am not sure of your answer. The bindings work (i.e. I can call the
> GL functions from luaJIT using the FFI) but the JIT compiler is not
> able to generate the trace as far as I understand. It aborts upon the
> call to glClear
>
> On Sun, May 1, 2011 at 4:41 AM, Dimiter "malkia" Stanev
> <malkia@gmail.com> wrote:
>> Hi Benjamin,
>>
>> I have some FFI bindings for OpenGL, and they work for me: OSX (32-bit,
>> 64-bit), Windows (32-bit, 64-bit) and Ubuntu 11.04 linux (and probably othes
>> - again 32-bit and 64-bit).
>>
>> http://github.com/malkia/ufo - it comes with precompiled luajit, and few
>> other dlls (glfw, anttweakbar, and zeromq).
>>
>> Thanks,
>> Dimiter "malkia" Stanev
>>
>> On 4/30/11 9:07 PM, Benjamin Segovia wrote:
>>>
>>> Hello all,
>>>
>>> I am experimenting luaJIT and its FFI. Unfortunately, while trying to
>>> process a rather big loop, the trace aborts on the first C function
>>> call done via the FFI.
>>>
>>> Here, I load openGL symbols in "gl" via the FFI. When glClear (see
>>> pasted code) is called, trace aborts with error "symbol not in cache"
>>>
>>> here is the code:
>>>
>>> function render_system:render()
>>>   gl.glClear(gl.GL_COLOR_BUFFER_BIT)
>>>
>>>   -- all squares first
>>>   local sq = self.render_world.square
>>>   gl.glBegin(gl.GL_QUADS)
>>>     for _,square in pairs(sq) do
>>>       local c = square.color
>>>       local p = square.center
>>>       local s = square.size
>>>       gl.glColor3f(c[1],c[2],c[3])
>>>       gl.glVertex3f(p[1]+s[1], p[2]+s[2], p[3]+s[3])
>>>       gl.glVertex3f(p[1]+s[1], p[2]-s[2], p[3]+s[3])
>>>       gl.glVertex3f(p[1]-s[1], p[2]-s[2], p[3]+s[3])
>>>       gl.glVertex3f(p[1]-s[1], p[2]+s[2], p[3]+s[3])
>>>     end
>>>   gl.glEnd()
>>> end
>>>
>>> AM I doing something wrong? Or is it the normal behaviour?
>>>
>>> I just fetched the last luaJIT version from git HEAD.
>>>
>>> Thanks!
>>> Ben
>>>
>>>
>>
>>
>>
>