instance Storable AIOCB where

    sizeOf _ = (#const sizeof (struct aiocb))

    alignment _ = 1

    poke p_AIOCB (AIOCB aioFd aioLioOpcode aioReqPrio aioOffset aioBuf aioBytes aioSigevent) = do

       (#poke struct aiocb, aio_fildes) p_AIOCB aioFd

       (#poke struct aiocb, aio_lio_opcode) p_AIOCB aioLioOpcode

       (#poke struct aiocb, aio_reqprio) p_AIOCB aioReqPrio

       (#poke struct aiocb, aio_offset) p_AIOCB aioOffset

       (#poke struct aiocb, aio_buf) p_AIOCB aioBuf

       (#poke struct aiocb, aio_nbytes) p_AIOCB aioBytes

       (#poke struct aiocb, aio_sigevent) p_AIOCB aioSigevent

    peek p_AIOCB = do

       aioFd <- (#peek struct aiocb, aio_fildes) p_AIOCB

       aioLioOpcode <- (#peek struct aiocb, aio_lio_opcode) p_AIOCB

       aioReqPrio <- (#peek struct aiocb, aio_reqprio) p_AIOCB

       aioOffset <- (#peek struct aiocb, aio_offset) p_AIOCB

       aioBuf <- (#peek struct aiocb, aio_buf) p_AIOCB

       aioBytes <- (#peek struct aiocb, aio_nbytes) p_AIOCB

       aioSigevent <- (#peek struct aiocb, aio_sigevent) p_AIOCB

       return (AIOCB aioFd aioLioOpcode aioReqPrio aioOffset aioBuf aioBytes aioSigevent)



On Tue, Jul 1, 2008 at 2:48 AM, Bulat Ziganshin <bulat.ziganshin@gmail.com> wrote:
Hello Vasili,

Tuesday, July 1, 2008, 11:42:26 AM, you wrote:

looks ok, show us your peek/poke code


> Hello,

>        I am also testing my aio support. The aio_write binding
> seems to work ok .. as well as aio_error, Aio_return is a problem
> child. I think I wrote a really simple binding. I always receive
> nbytes as 0. I have been staring at the code hoping to catch a
> stupid mistake. I put putStrLn's in the code. .....Here is the code ...
>
> aioReturn :: AIOCB -> IO (AIOCB, ByteCount)
> aioReturn aiocb = do
>    allocaBytes (#const sizeof(struct aiocb)) $ \ p_aiocb -> do
>       poke p_aiocb aiocb
>       count <- throwErrnoIfMinus1 "aioReturn" (c_aio_return  p_aiocb)
>        aiocb <- peek p_aiocb
>       return (aiocb, fromIntegral count)

> foreign import ccall safe "aio.h aio_return"
>     c_aio_return :: Ptr AIOCB -> IO CInt

> Maybe someone can spot something that I haven't.
>
> Thanks, Vasili
>


--
Best regards,
 Bulat                            mailto:Bulat.Ziganshin@gmail.com