diff options
author | Roland McGrath <roland@gnu.org> | 2001-06-16 04:47:37 +0000 |
---|---|---|
committer | Roland McGrath <roland@gnu.org> | 2001-06-16 04:47:37 +0000 |
commit | 5ec73bb91f231a0d7a3c54183a9282cafd5511cb (patch) | |
tree | 42da8a5cc86f92fa1331117501a336064a19ba7f /rt/aio_cancel.c | |
parent | 636ccfc8fb4c9bd450fa5b7982771912a602d2b0 (diff) | |
download | glibc-5ec73bb91f231a0d7a3c54183a9282cafd5511cb.tar.gz glibc-5ec73bb91f231a0d7a3c54183a9282cafd5511cb.tar.xz glibc-5ec73bb91f231a0d7a3c54183a9282cafd5511cb.zip |
2001-06-15 Roland McGrath <roland@frob.com>
* rt/Makefile (aio-routines, clock-routines, timer-routines): New variables, broken out of librt-routines. (librt-routines): Set using those. (extra-libs, extra-libc-others, tests): Set these unconditionally. (distribute): No need for $(librt-map) or $(librt-routines:=.c) here. * sysdeps/generic/aio_fsync.c: New file. * sysdeps/generic/aio_misc.c: New file. * sysdeps/generic/aio_write.c: New file. * sysdeps/generic/aio_write64.c: New file. * sysdeps/generic/aio_read64.c: New file. * sysdeps/generic/aio_read.c: New file. * sysdeps/generic/aio_notify.c: New file. * sysdeps/generic/lio_listio64.c: New file. * sysdeps/generic/lio_listio.c: New file. * sysdeps/generic/aio_cancel.c: New file. * sysdeps/generic/aio_misc.h: New file. * sysdeps/generic/aio_suspend.c: New file. * rt/aio_cancel.c: Moved to ... * sysdeps/pthread/aio_cancel.c: ... here. * rt/aio_fsync.c: Moved to ... * sysdeps/pthread/aio_fsync.c: ... here. * rt/aio_misc.c: Moved to ... * sysdeps/pthread/aio_misc.c: ... here. * rt/aio_misc.h: Moved to ... * sysdeps/pthread/aio_misc.h: ... here. * rt/aio_notify.c: Moved to ... * sysdeps/pthread/aio_notify.c: ... here. * rt/aio_read.c: Moved to ... * sysdeps/pthread/aio_read.c: ... here. * rt/aio_read64.c: Moved to ... * sysdeps/pthread/aio_read64.c: ... here. * rt/aio_suspend.c: Moved to ... * sysdeps/pthread/aio_suspend.c: ... here. * rt/aio_write.c: Moved to ... * sysdeps/pthread/aio_write.c: ... here. * rt/aio_write64.c: Moved to ... * sysdeps/pthread/aio_write64.c: ... here. * rt/lio_listio.c: Moved to ... * sysdeps/pthread/lio_listio.c: ... here. * rt/lio_listio64.c: Moved to ... * sysdeps/pthread/lio_listio64.c: ... here.
Diffstat (limited to 'rt/aio_cancel.c')
-rw-r--r-- | rt/aio_cancel.c | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/rt/aio_cancel.c b/rt/aio_cancel.c deleted file mode 100644 index c1cfea50c8..0000000000 --- a/rt/aio_cancel.c +++ /dev/null @@ -1,142 +0,0 @@ -/* Cancel requests associated with given file descriptor. - Copyright (C) 1997, 1998, 2000 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. 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_cancel and aio_cancel64 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_cancel64 has no prototype. */ -#define aio_cancel64 XXX -#include <aio.h> -/* And undo the hack. */ -#undef aio_cancel64 - -#include <assert.h> -#include <errno.h> - -#include "aio_misc.h" - - -int -aio_cancel (fildes, aiocbp) - int fildes; - struct aiocb *aiocbp; -{ - struct requestlist *req = NULL; - int result = AIO_ALLDONE; - - /* Request the mutex. */ - pthread_mutex_lock (&__aio_requests_mutex); - - /* We are asked to cancel a specific AIO request. */ - if (aiocbp != NULL) - { - /* If the AIO request is not for this descriptor it has no value - to look for the request block. */ - if (aiocbp->aio_fildes == fildes) - { - struct requestlist *last = NULL; - - req = __aio_find_req_fd (fildes); - - if (req == NULL) - { - not_found: - pthread_mutex_unlock (&__aio_requests_mutex); - __set_errno (EINVAL); - return -1; - } - - while (req->aiocbp != (aiocb_union *) aiocbp) - { - last = req; - req = req->next_prio; - if (req == NULL) - goto not_found; - } - - /* Don't remove the entry if a thread is already working on it. */ - if (req->running == allocated) - { - result = AIO_NOTCANCELED; - req = NULL; - } - else - { - /* We can remove the entry. */ - __aio_remove_request (last, req, 0); - - result = AIO_CANCELED; - - req->next_prio = NULL; - } - } - } - else - { - /* Find the beginning of the list of all requests for this - desriptor. */ - req = __aio_find_req_fd (fildes); - - /* If any request is worked on by a thread it must be the first. - So either we can delete all requests or all but the first. */ - if (req != NULL) - { - if (req->running == allocated) - { - struct requestlist *old = req; - req = req->next_prio; - old->next_prio = NULL; - - result = AIO_NOTCANCELED; - - if (req != NULL) - __aio_remove_request (old, req, 1); - } - else - { - result = AIO_CANCELED; - - /* We can remove the entry. */ - __aio_remove_request (NULL, req, 1); - } - } - } - - /* Mark requests as canceled and send signal. */ - while (req != NULL) - { - struct requestlist *old = req; - assert (req->running == yes || req->running == queued); - req->aiocbp->aiocb.__error_code = ECANCELED; - req->aiocbp->aiocb.__return_value = -1; - __aio_notify (req); - req = req->next_prio; - __aio_free_request (old); - } - - /* Release the mutex. */ - pthread_mutex_unlock (&__aio_requests_mutex); - - return result; -} - -weak_alias (aio_cancel, aio_cancel64) |