diff options
Diffstat (limited to 'rtkaio/sysdeps/unix/sysv/linux/kaio_return.c')
-rw-r--r-- | rtkaio/sysdeps/unix/sysv/linux/kaio_return.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/rtkaio/sysdeps/unix/sysv/linux/kaio_return.c b/rtkaio/sysdeps/unix/sysv/linux/kaio_return.c new file mode 100644 index 0000000000..1d9f6cbabb --- /dev/null +++ b/rtkaio/sysdeps/unix/sysv/linux/kaio_return.c @@ -0,0 +1,50 @@ +/* Return exit value of asynchronous I/O request. + Copyright (C) 1997, 2002, 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + + +/* We use an UGLY hack to prevent gcc from finding us cheating. The + implementation of aio_return and aio_return64 are identical and so + we want to avoid code duplication by using aliases. But gcc sees + the different parameter lists and prints a warning. We define here + a function so that aio_return64 has no prototype. */ +#define aio_return64 XXX +#include <aio.h> +/* And undo the hack. */ +#undef aio_return64 + +#include <kaio_misc.h> + +#ifndef USE_KAIO +#include <aio_return.c> +#else + +#include <errno.h> + +ssize_t +aio_return (aiocbp) + struct aiocb *aiocbp; +{ + if (aiocbp->__error_code == EINPROGRESS) + __aio_read_one_event (); + return aiocbp->__return_value; +} + +weak_alias (aio_return, aio_return64) +#endif |