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authorRoland McGrath <roland@gnu.org>2001-06-16 04:47:37 +0000
committerRoland McGrath <roland@gnu.org>2001-06-16 04:47:37 +0000
commit5ec73bb91f231a0d7a3c54183a9282cafd5511cb (patch)
tree42da8a5cc86f92fa1331117501a336064a19ba7f /rt/aio_cancel.c
parent636ccfc8fb4c9bd450fa5b7982771912a602d2b0 (diff)
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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.c142
1 files changed, 0 insertions, 142 deletions
diff --git a/rt/aio_cancel.c b/rt/aio_cancel.c
deleted file mode 100644
index c1cfea5..0000000
--- 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)