C-SKY: mark lr as undefined to stop unwinding

[thirdparty/glibc.git] / rt / aio_suspend.c

diff --git a/rt/aio_suspend.c b/rt/aio_suspend.c
index 6123b7baa07ccdbfd46035dab06343869ae5b59c..ceb40dedd98244d368b4966408512aa6c6d710cc 100644 (file)
--- a/rt/aio_suspend.c
+++ b/rt/aio_suspend.c
@@ -1,26 +1,24 @@
-/* Suspend until termination of a requests.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+/* Suspend until termination of a requests.  Stub version.
+   Copyright (C) 2001-2019 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
+   <http://www.gnu.org/licenses/>.  */
 
 
 /* We use an UGLY hack to prevent gcc from finding us cheating.  The
-   implementation of aio_suspend and aio_suspend64 are identical and so
+   implementations of aio_suspend and aio_suspend64 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_suspend64 has no prototype.  */
@@ -30,99 +28,17 @@
 #undef aio_suspend64
 
 #include <errno.h>
-
-#include "aio_misc.h"
+#include <sys/time.h>
 
 
 int
-aio_suspend (list, nent, timeout)
-     const struct aiocb *const list[];
-     int nent;
-     const struct timespec *timeout;
+aio_suspend (const struct aiocb *const list[], int nent,
+            const struct timespec *timeout)
 {
-  pthread_cond_t cond;
-  struct waitlist waitlist[nent];
-  struct requestlist *requestlist[nent];
-  int cnt;
-  int result = 0;
-
-  /* Request the mutex.  */
-  pthread_mutex_lock (&__aio_requests_mutex);
-
-  /* First look whether there is already a terminated request.  */
-  for (cnt = 0; cnt < nent; ++cnt)
-    if (list[cnt] != NULL && list[cnt]->__error_code != EINPROGRESS)
-      break;
-
-  if (cnt == nent)
-    {
-      int oldstate;
-
-      /* There is not yet a finished request.  Signal the request that
-        we are working for it.  */
-      for (cnt = 0; cnt < nent; ++cnt)
-       if (list[cnt] != NULL && list[cnt]->__error_code == EINPROGRESS)
-         {
-           requestlist[cnt] = __aio_find_req ((aiocb_union *) list[cnt]);
-
-           if (requestlist[cnt] != NULL)
-             {
-               waitlist[cnt].cond = &cond;
-               waitlist[cnt].next = requestlist[cnt]->waiting;
-               waitlist[cnt].counterp = NULL;
-               waitlist[cnt].sigevp = NULL;
-               requestlist[cnt]->waiting = &waitlist[cnt];
-             }
-         }
-
-      /* 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);
-
-      if (timeout == NULL)
-       result = pthread_cond_wait (&cond, &__aio_requests_mutex);
-      else
-       result = pthread_cond_timedwait (&cond, &__aio_requests_mutex,
-                                        timeout);
-
-      /* Now remove the entry in the waiting list for all requests
-        which didn't terminate  */
-      for (cnt = 0; cnt < nent; ++cnt)
-       if (list[cnt] != NULL && list[cnt]->__error_code == EINPROGRESS
-           && requestlist[cnt] != NULL)
-         {
-           struct waitlist **listp = &requestlist[cnt]->waiting;
-
-           /* There is the chance that we cannot find our entry anymore.
-              This could happen if the request terminated and restarted
-              again.  */
-           while (*listp != NULL && *listp != &waitlist[cnt])
-             listp = &(*listp)->next;
-
-           if (*listp != NULL)
-             *listp = (*listp)->next;
-         }
-
-      /* Now it's time to restore the cancelation state.  */
-      pthread_setcancelstate (oldstate, NULL);
-
-      if (result != 0)
-       {
-         /* An error occurred.  Possibly it's EINTR.  We have to translate
-            the timeout error report of `pthread_cond_timedwait' to the
-            form expected from `aio_suspend'.  */
-         if (result == ETIMEDOUT)
-           __set_errno (EAGAIN);
-
-         result = -1;
-       }
-    }
-
-  /* Release the mutex.  */
-  pthread_mutex_unlock (&__aio_requests_mutex);
-
-  return result;
+  __set_errno (ENOSYS);
+  return -1;
 }
-
 weak_alias (aio_suspend, aio_suspend64)
+
+stub_warning (aio_suspend)
+stub_warning (aio_suspend64)