-/* Notify initiator of AIO request.
- Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+/* Notify initiator of AIO request. Stub version.
+ Copyright (C) 2001-2021 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.
+ 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
- Library General Public License for more details.
+ Lesser 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. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
-#include <errno.h>
-#include <pthread.h>
-#include <stdlib.h>
-#include "aio_misc.h"
+#include <aio.h>
+#include <aio_misc.h>
-int
-internal_function
-__aio_notify_only (struct sigevent *sigev, pid_t caller_pid)
-{
- int result = 0;
-
- /* Send the signal to notify about finished processing of the request. */
- if (sigev->sigev_notify == SIGEV_THREAD)
- {
- /* We have to start a thread. */
- pthread_t tid;
- pthread_attr_t attr, *pattr;
-
- pattr = (pthread_attr_t *) sigev->sigev_notify_attributes;
- if (pattr == NULL)
- {
- pthread_attr_init (&attr);
- pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
- pattr = &attr;
- }
-
- if (pthread_create (&tid, pattr,
- (void *(*) (void *)) sigev->sigev_notify_function,
- sigev->sigev_value.sival_ptr) < 0)
- result = -1;
- }
- else if (sigev->sigev_notify == SIGEV_SIGNAL)
- /* We have to send a signal. */
- if (__aio_sigqueue (sigev->sigev_signo, sigev->sigev_value, caller_pid)
- < 0)
- result = -1;
-
- return result;
-}
-
-
-void
-internal_function
-__aio_notify (struct requestlist *req)
-{
- struct waitlist *waitlist;
- struct aiocb *aiocbp = &req->aiocbp->aiocb;
-
- if (__aio_notify_only (&aiocbp->aio_sigevent, req->caller_pid) != 0)
- {
- /* XXX What shall we do if already an error is set by
- read/write/fsync? */
- aiocbp->__error_code = errno;
- aiocbp->__return_value = -1;
- }
-
- /* Now also notify possibly waiting threads. */
- waitlist = req->waiting;
- while (waitlist != NULL)
- {
- struct waitlist *next = waitlist->next;
-
- /* Decrement the counter. This is used in both cases. */
- --*waitlist->counterp;
-
- if (waitlist->sigevp == NULL)
- pthread_cond_signal (waitlist->cond);
- else
- /* This is part of a asynchronous `lio_listio' operation. If
- this request is the last one, send the signal. */
- if (*waitlist->counterp == 0)
- {
- __aio_notify_only (waitlist->sigevp, waitlist->caller_pid);
- /* This is tricky. See lio_listio.c for the reason why
- this works. */
- free ((void *) waitlist->counterp);
- }
-
- waitlist = next;
- }
-}
+/* This file contains only internal functions used by
+ the particular aio_* implementation code. */