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/*
* Copyright (c) 2015-16 David Lamparter, for NetDEF, Inc.
*
* This file is part of Quagga
*
* Quagga 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.
*
* Quagga 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 Quagga; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <zebra.h>
#include "thread.h"
#include "memory.h"
#include "hash.h"
#include "log.h"
#include "qobj.h"
static struct hash *nodes = NULL;
static unsigned int qobj_key(void *data)
{
struct qobj_node *node = data;
return (unsigned int)node->nid;
}
static int qobj_cmp(const void *a, const void *b)
{
const struct qobj_node *na = a, *nb = b;
return na->nid == nb->nid;
}
void qobj_reg(struct qobj_node *node, struct qobj_nodetype *type)
{
node->type = type;
do {
node->nid = (uint64_t)random();
node->nid ^= (uint64_t)random() << 32;
} while (!node->nid
|| hash_get(nodes, node, hash_alloc_intern) != node);
}
void qobj_unreg(struct qobj_node *node)
{
hash_release(nodes, node);
}
struct qobj_node *qobj_get(uint64_t id)
{
struct qobj_node dummy = {.nid = id};
return hash_lookup(nodes, &dummy);
}
void *qobj_get_typed(uint64_t id, struct qobj_nodetype *type)
{
struct qobj_node *node = qobj_get(id);
if (!node || node->type != type)
return NULL;
return (char *)node - node->type->node_member_offset;
}
void qobj_init(void)
{
if (!nodes)
nodes = hash_create(qobj_key, qobj_cmp);
}
void qobj_finish(void)
{
hash_clean(nodes, NULL);
hash_free(nodes);
nodes = NULL;
}
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