libmom/fetch-mach-port.c


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/* Return the Mach port corresponding to a mom port reference
   Copyright (C) 1996 Free Software Foundation, Inc.
   Written by Michael I. Bushnell, p/BSG.

   This file is part of the GNU Hurd.

   The GNU Hurd is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2, or (at
   your option) any later version.

   The GNU Hurd 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
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */

#include "priv.h"

mach_port_t
mom_fetch_mach_port (struct mom_port_ref *obj)
{
  mach_port_t ret;
  
  spin_lock (&obj->lock);
  assert (obj->refcnt);
  ret = obj->port;
  spin_unlock (&obj->lock);
  return ret;
}