/* Deallocate the kernel thread resources.  Mach version.
   Copyright (C) 2000, 2002, 2005 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   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.  */

#include <assert.h>
#include <errno.h>
#include <mach.h>

#include <mach/mig_support.h>

#include <pt-internal.h>

/* Terminate the kernel thread associated with THREAD, and deallocate its
   right reference and its stack.  The function also drops a reference
   on THREAD.  */
void
__pthread_thread_terminate (struct __pthread *thread)
{
  thread_t kernel_thread, self_ktid;
  mach_port_t reply_port;
  void *stackaddr;
  size_t stacksize;
  error_t err;

  kernel_thread = thread->kernel_thread;

  if (thread->stack)
    {
      stackaddr = thread->stackaddr;
      stacksize = thread->stacksize;
    }
  else
    {
      stackaddr = NULL;
      stacksize = 0;
    }

  /* Each thread has its own reply port, allocated from MiG stub code calling
     __mig_get_reply_port.  Destroying it is a bit tricky because the calls
     involved are also RPCs, causing the creation of a new reply port if
     currently null. The __thread_terminate_release call is actually a one way
     simple routine designed not to require a reply port.  */
  self_ktid = __mach_thread_self ();
  reply_port = (self_ktid == kernel_thread)
	       ? __mig_get_reply_port ()
	       : MACH_PORT_NULL;
  __mach_port_deallocate (__mach_task_self (), self_ktid);

  /* Finally done with the thread structure.  */
  __pthread_dealloc (thread);

  /* Terminate and release all that's left.  */
  err = __thread_terminate_release (kernel_thread, mach_task_self (),
				    kernel_thread, reply_port,
				    stackaddr, stacksize);
  assert_perror (err);
}