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/* Iterate a function over the ports in a bucket.
Copyright (C) 1995, 1999 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>
/* Internal entrypoint for both ports_bucket_iterate and ports_class_iterate.
If CLASS is non-null, call FUN only for ports in that class. */
error_t
_ports_bucket_class_iterate (struct port_bucket *bucket,
struct port_class *class,
error_t (*fun)(void *))
{
/* This is obscenely ineffecient. ihash and ports need to cooperate
more closely to do it efficiently. */
struct item
{
struct item *next;
void *p;
} *list = 0;
struct item *i, *nxt;
error_t err;
mutex_lock (&_ports_lock);
HURD_IHASH_ITERATE (&bucket->htable, arg)
{
struct port_info *const pi = arg;
struct item *j;
if (class == 0 || pi->class == class)
{
j = malloc (sizeof (struct item));
j->next = list;
j->p = pi;
list = j;
pi->refcnt++;
}
}
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;
}
error_t
ports_bucket_iterate (struct port_bucket *bucket,
error_t (*fun)(void *))
{
return _ports_bucket_class_iterate (bucket, 0, fun);
}
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