/* 
   Copyright (C) 1995 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */

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

/* This is obsecenely ineffecient.  ihash and ports need to cooperate
   more closely to do it effeciently. */
error_t
ports_bucket_iterate (struct port_bucket *bucket,
		      error_t (*fun)(void *))
{
  struct item 
    {
      struct item *next;
      void *p;
    } *list = 0;
  struct item *i, *nxt;
  error_t err;

  error_t enqueue (void *pi)
    {
      struct item *j;
      
      j = malloc (sizeof (struct item));
      j->next = list;
      j->p = pi;
      list = j;
      ((struct port_info *)pi)->refcnt++;
      return 0;
    }
  
  mutex_lock (&_ports_lock);
  ihash_iterate (bucket->htable, enqueue);
  mutex_unlock (&_ports_lock);
  
  err = 0;
  for (i = list; i; i = nxt)
    {
      if (!err)
	err = (*fun)(i->p);
      ports_port_deref (i->p);
      nxt = i->next;
      free (i);
    }
  return err;
}