rt: Move generic implementation from sysdeps/pthread to rt

The pthread-based implementation is the generic one.  Replacing
the stubs makes it clear that they do not have to be adjusted for
the libpthread move.

Result of:

    git mv -f sysdeps/pthread/aio_misc.h sysdeps/generic/
    git mv sysdeps/pthread/timer_routines.c sysdeps/htl/
    git mv -f sysdeps/pthread/{aio,lio,timer}_*.c rt/

Followed by manual adjustment of the #include paths in
sysdeps/unix/sysv/linux/wordsize-64, and a move of the version
definitions formerly in sysdeps/pthread/Versions.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 0 insertions, 157 deletions

diff --git a/sysdeps/pthread/aio_cancel.c b/sysdeps/pthread/aio_cancel.c
deleted file mode 100644
index 63fd88f..0000000
--- a/sysdeps/pthread/aio_cancel.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/* Cancel requests associated with given file descriptor.
-   Copyright (C) 1997-2021 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 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
-   Lesser General Public License for more details.
-
-   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/>.  */
-
-
-/* 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.  */
-#ifndef aio_cancel
-#define aio_cancel64 XXX
-#include <aio.h>
-/* And undo the hack.  */
-#undef aio_cancel64
-#endif
-
-#include <assert.h>
-#include <errno.h>
-#include <fcntl.h>
-
-#include <aio_misc.h>
-
-
-int
-aio_cancel (int fildes, struct aiocb *aiocbp)
-{
-  struct requestlist *req = NULL;
-  int result = AIO_ALLDONE;
-
-  /* If fildes is invalid, error. */
-  if (fcntl (fildes, F_GETFL) < 0)
-    {
-      __set_errno (EBADF);
-      return -1;
-    }
-
-  /* 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)
-	{
-	  pthread_mutex_unlock (&__aio_requests_mutex);
-	  __set_errno (EINVAL);
-	  return -1;
-	}
-      else if (aiocbp->__error_code == EINPROGRESS)
-	{
-	  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;
-}
-
-#ifndef aio_cancel
-weak_alias (aio_cancel, aio_cancel64)
-#endif