[Lse-tech] Re: POSIX AIO implementation

[Mark W. <ma...@os...>]

Hi Laurent,

I got the following build error:

 gcc -DHAVE_CONFIG_H -I. -I. -I.. -D_LARGEFILE64_SOURCE -Wall -Werror -g -O2 -c aio_fsync.c -MT aio_fsync.lo -MD -MP -MF .deps/aio_fsync.TPlo  -fPIC -DPIC -o .libs/aio_fsync.o
aio_fsync.c: In function `aio_fsync64':
aio_fsync.c:40: error: duplicate case value
aio_fsync.c:35: error: previously used here
make[2]: *** [aio_fsync.lo] Error 1
make[2]: Leaving directory `/usr/local/src/libposix-aio-0.1/libposix-aio'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/local/src/libposix-aio-0.1'
make: *** [all] Error 2

On Thu, Dec 09, 2004 at 05:10:03PM +0100, Laurent Vivier wrote:
> Hi,
> 
> I'm trying to write a new implementation of POSIX AIO for linux.
> 
> It is based on linux native kernel AIO (contrary to glibc POSIX AIO,
> based on threads and kernel synchronous IO), implements full POSIX AIO
> (for instance sigevent field of aiocb, contrary to libaio-oracle). it's
> a very light library with no internal data (all is stored in iocb and
> aiocb structures).
> Moreover, for the most common features, you can use it on a vanilla
> kernel. Kernel patches are needed for kernel AIO unsupported features
> (like sigevent and aio_cancel() on a file descriptor). I tried to not
> modify kernel when It is possible.
> 
> All needed files can be found at http://www.bullopensource.org/posix
> 
> I provide too a patch to the open posix test suite to test the POSIX AIO
> option group.
> 
> Features:
> 
> - based on kernel AIO
> - can be used on standard kernel (in this case, some POSIX features are
> not available)
> - can support sigevent field of aiocb and lio_listio() on patched kernel
> - can support aio_cancel() on a file descriptor on patched kernel
> - don't duplicate information between user- and kernel-space.
> 
> If you are interested by this work, you can contact me at
> Lau...@bu...
> 
> Laurent
>