sysdeps/generic/mig-reply.c

   1 /* Copyright (C) 1992 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <mach.h>
  20
  21 /* These functions are called by MiG-generated code.  */
  22
  23 static mach_port_t reply_port;
  24
  25 /* Called by MiG to get a reply port.  */
  26 mach_port_t
  27 __mig_get_reply_port (void)
  28 {
  29   if (reply_port == MACH_PORT_NULL)
  30     reply_port = __mach_reply_port ();
  31
  32   return reply_port;
  33 }
  34
  35 /* Called by MiG to deallocate the reply port.  */
  36 void
  37 __mig_dealloc_reply_port (void)
  38 {
  39   mach_port_t port = reply_port;
  40   reply_port = MACH_PORT_NULL;  /* So the mod_refs RPC won't use it.  */
  41   __mach_port_mod_refs (__mach_task_self (), port,
  42                         MACH_PORT_RIGHT_RECEIVE, -1);
  43 }
  44
  45
  46 /* Called at startup with CPROC == NULL.  cthreads has a different version
  47    of this function that is sometimes called with a `cproc_t' pointer.  */
  48 void
  49 __mig_init (void *cproc)
  50 {
  51   if (cproc == 0)
  52     reply_port = MACH_PORT_NULL;
  53 }