/* Copyright (C) 2008 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.

   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <sysdep-cancel.h>
#include <sys/types.h>
#include <sys/mman.h>

int
msync (__ptr_t addr, size_t len, int flags)
{
  if (SINGLE_THREAD_P)
    return memcntl (addr, len, MC_SYNC, (caddr_t)flags, 0, 0);

  int oldtype = LIBC_CANCEL_ASYNC ();

  int res = memcntl (addr, len, MC_SYNC, (caddr_t)flags, 0, 0);

  LIBC_CANCEL_RESET (oldtype);

  return res;
}