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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/lio_listio.c
parent636ccfc8fb4c9bd450fa5b7982771912a602d2b0 (diff)
downloadglibc-5ec73bb91f231a0d7a3c54183a9282cafd5511cb.tar.gz
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/lio_listio.c')
-rw-r--r--rt/lio_listio.c187
1 files changed, 0 insertions, 187 deletions
diff --git a/rt/lio_listio.c b/rt/lio_listio.c
deleted file mode 100644
index e1df603fd8..0000000000
--- a/rt/lio_listio.c
+++ /dev/null
@@ -1,187 +0,0 @@
-/* Enqueue and list of read or write requests.
- Copyright (C) 1997, 1998, 1999, 2000, 2001 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. */
-
-#include <aio.h>
-#include <assert.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include "aio_misc.h"
-
-
-/* We need this special structure to handle asynchronous I/O. */
-struct async_waitlist
- {
- int counter;
- struct sigevent sigev;
- struct waitlist list[0];
- };
-
-
-int
-lio_listio (mode, list, nent, sig)
- int mode;
- struct aiocb *const list[];
- int nent;
- struct sigevent *sig;
-{
- struct sigevent defsigev;
- struct requestlist *requests[nent];
- int cnt;
- volatile int total = 0;
- int result = 0;
-
- /* Check arguments. */
- if (mode != LIO_WAIT && mode != LIO_NOWAIT)
- {
- __set_errno (EINVAL);
- return -1;
- }
-
- if (sig == NULL)
- {
- defsigev.sigev_notify = SIGEV_NONE;
- sig = &defsigev;
- }
-
- /* Request the mutex. */
- pthread_mutex_lock (&__aio_requests_mutex);
-
- /* Now we can enqueue all requests. Since we already acquired the
- mutex the enqueue function need not do this. */
- for (cnt = 0; cnt < nent; ++cnt)
- if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
- {
- list[cnt]->aio_sigevent.sigev_notify = SIGEV_NONE;
- requests[cnt] = __aio_enqueue_request ((aiocb_union *) list[cnt],
- list[cnt]->aio_lio_opcode);
-
- if (requests[cnt] != NULL)
- /* Successfully enqueued. */
- ++total;
- else
- /* Signal that we've seen an error. `errno' and the error code
- of the aiocb will tell more. */
- result = -1;
- }
- else
- requests[cnt] = NULL;
-
- if (total == 0)
- {
- /* We don't have anything to do except signalling if we work
- asynchronously. */
-
- /* Release the mutex. We do this before raising a signal since the
- signal handler might do a `siglongjmp' and then the mutex is
- locked forever. */
- pthread_mutex_unlock (&__aio_requests_mutex);
-
- if (mode == LIO_NOWAIT)
- __aio_notify_only (sig,
- sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0);
-
- return result;
- }
- else if (mode == LIO_WAIT)
- {
- pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
- struct waitlist waitlist[nent];
- int oldstate;
-
- total = 0;
- for (cnt = 0; cnt < nent; ++cnt)
- {
- assert (requests[cnt] == NULL || list[cnt] != NULL);
-
- if (requests[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
- {
- waitlist[cnt].cond = &cond;
- waitlist[cnt].next = requests[cnt]->waiting;
- waitlist[cnt].counterp = &total;
- waitlist[cnt].sigevp = NULL;
- waitlist[cnt].caller_pid = 0; /* Not needed. */
- requests[cnt]->waiting = &waitlist[cnt];
- ++total;
- }
- }
-
- /* Since `pthread_cond_wait'/`pthread_cond_timedwait' are cancelation
- points we must be careful. We added entries to the waiting lists
- which we must remove. So defer cancelation for now. */
- pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, &oldstate);
-
- while (total > 0)
- pthread_cond_wait (&cond, &__aio_requests_mutex);
-
- /* Now it's time to restore the cancelation state. */
- pthread_setcancelstate (oldstate, NULL);
-
- /* Release the conditional variable. */
- if (pthread_cond_destroy (&cond) != 0)
- /* This must never happen. */
- abort ();
- }
- else
- {
- struct async_waitlist *waitlist;
-
- waitlist = (struct async_waitlist *)
- malloc (sizeof (struct async_waitlist)
- + (nent * sizeof (struct waitlist)));
-
- if (waitlist == NULL)
- {
- __set_errno (EAGAIN);
- result = -1;
- }
- else
- {
- pid_t caller_pid = sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0;
- total = 0;
-
- for (cnt = 0; cnt < nent; ++cnt)
- {
- assert (requests[cnt] == NULL || list[cnt] != NULL);
-
- if (requests[cnt] != NULL
- && list[cnt]->aio_lio_opcode != LIO_NOP)
- {
- waitlist->list[cnt].cond = NULL;
- waitlist->list[cnt].next = requests[cnt]->waiting;
- waitlist->list[cnt].counterp = &waitlist->counter;
- waitlist->list[cnt].sigevp = &waitlist->sigev;
- waitlist->list[cnt].caller_pid = caller_pid;
- requests[cnt]->waiting = &waitlist->list[cnt];
- ++total;
- }
- }
-
- waitlist->counter = total;
- waitlist->sigev = *sig;
- }
- }
-
- /* Release the mutex. */
- pthread_mutex_unlock (&__aio_requests_mutex);
-
- return result;
-}