/* Create a port bucket
   Copyright (C) 1995, 1997, 2001 Free Software Foundation, Inc.
   Written by Michael I. Bushnell.

   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., 675 Mass Ave, Cambridge, MA 02139, USA. */

#include "ports.h"
#include <errno.h>
#include <stdlib.h>
#include <hurd/ihash.h>
#include <cthreads.h>

struct port_bucket *
ports_create_bucket ()
{
  struct port_bucket *ret;
  error_t err;

  ret = malloc (sizeof (struct port_bucket));
  if (! ret)
    {
      errno = ENOMEM;
      return NULL;
    }

  err = mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_PORT_SET, 
			    &ret->portset);
  if (err)
    {
      errno = err;
      free (ret);
      return NULL;
    }

  err = ihash_create (&ret->htable);
  if (err)
    {
      errno = err;
      mach_port_mod_refs (mach_task_self (), ret->portset,
			  MACH_PORT_RIGHT_PORT_SET, -1);
      free (ret);
      return NULL;
    }

  ret->rpcs = ret->flags = ret->count = 0;

  mutex_lock (&_ports_lock);
  ret->next = _ports_all_buckets;
  _ports_all_buckets = ret;
  mutex_unlock (&_ports_lock);

  return ret;
}