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-rw-r--r--rt/aio_suspend.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/rt/aio_suspend.c b/rt/aio_suspend.c
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+++ b/rt/aio_suspend.c
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+/* Suspend until termination of a requests.
+   Copyright (C) 1997 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
+   implementation 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 "aio_misc.h"
+
+
+int
+aio_suspend (list, nent, timeout)
+     const struct aiocb *const list[];
+     int nent;
+     const struct timespec *timeout;
+{
+  int cnt;
+
+  /* First look whether there is already a terminated request.  */
+  for (cnt = 0; cnt < nent; ++cnt)
+    if (list[cnt] != NULL && list[cnt]->__error_code != EINPROGRESS)
+      return 0;
+
+  /* XXX We have to write code which waits.  */
+
+  return -1;
+}
+
+weak_alias (aio_suspend, aio_suspend64)