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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_suspend.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_suspend.c')
-rw-r--r--rt/aio_suspend.c151
1 files changed, 0 insertions, 151 deletions
diff --git a/rt/aio_suspend.c b/rt/aio_suspend.c
deleted file mode 100644
index 5ac2d23ffb..0000000000
--- a/rt/aio_suspend.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/* Suspend until termination of a requests.
-   Copyright (C) 1997, 1998, 1999, 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
-   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.  */
-#define aio_suspend64 XXX
-#include <aio.h>
-/* And undo the hack.  */
-#undef aio_suspend64
-
-#include <errno.h>
-#include <stdlib.h>
-#include <sys/time.h>
-
-#include "aio_misc.h"
-
-
-int
-aio_suspend (list, nent, timeout)
-     const struct aiocb *const list[];
-     int nent;
-     const struct timespec *timeout;
-{
-  struct waitlist waitlist[nent];
-  struct requestlist *requestlist[nent];
-  pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
-  int cnt;
-  int result = 0;
-  int dummy;
-  int none = 1;
-
-  /* Request the mutex.  */
-  pthread_mutex_lock (&__aio_requests_mutex);
-
-  /* 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 = &dummy;
-	    waitlist[cnt].sigevp = NULL;
-	    waitlist[cnt].caller_pid = 0;	/* Not needed.  */
-	    requestlist[cnt]->waiting = &waitlist[cnt];
-	    none = 0;
-	  }
-      }
-
-  /* If there is a not finished request wait for it.  */
-  if (!none)
-    {
-      int oldstate;
-
-      /* 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
-	{
-	  /* We have to convert the relative timeout value into an
-	     absolute time value with pthread_cond_timedwait expects.  */
-	  struct timeval now;
-	  struct timespec abstime;
-
-	  __gettimeofday (&now, NULL);
-	  abstime.tv_nsec = timeout->tv_nsec + now.tv_usec * 1000;
-	  abstime.tv_sec = timeout->tv_sec + now.tv_sec;
-	  if (abstime.tv_nsec >= 1000000000)
-	    {
-	      abstime.tv_nsec -= 1000000000;
-	      abstime.tv_sec += 1;
-	    }
-
-	  result = pthread_cond_timedwait (&cond, &__aio_requests_mutex,
-					   &abstime);
-	}
-
-      /* 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);
-
-      /* Release the conditional variable.  */
-      if (pthread_cond_destroy (&cond) != 0)
-	/* This must never happen.  */
-	abort ();
-
-      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;
-}
-
-weak_alias (aio_suspend, aio_suspend64)