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/*
* Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file msgbuf_pool.c
* @brief Implementation of hICN packet pool.
*/
#include "../base/pool.h"
#include "msgbuf_pool.h"
#define PACKET_POOL_DEFAULT_INIT_SIZE 1024
msgbuf_pool_t *
_msgbuf_pool_create(size_t init_size, size_t max_size)
{
msgbuf_pool_t * msgbuf_pool = malloc(sizeof(msgbuf_pool_t));
if (init_size == 0)
init_size = PACKET_POOL_DEFAULT_INIT_SIZE;
pool_init(msgbuf_pool->buffers, init_size, 0);
return msgbuf_pool;
}
void
msgbuf_pool_free(msgbuf_pool_t * msgbuf_pool)
{
pool_free(msgbuf_pool->buffers);
free(msgbuf_pool);
}
int
msgbuf_pool_get(msgbuf_pool_t * msgbuf_pool, msgbuf_t * msgbuf)
{
pool_get(msgbuf_pool->buffers, msgbuf);
return 0;
}
void
msgbuf_pool_put(msgbuf_pool_t * msgbuf_pool, msgbuf_t * msgbuf)
{
pool_put(msgbuf_pool->buffers, msgbuf);
}
int
msgbuf_pool_getn(msgbuf_pool_t * msgbuf_pool, msgbuf_t ** msgbuf, size_t n)
{
for (unsigned i = 0; i < n; i++) {
if (!msgbuf_pool_get(msgbuf_pool, msgbuf[i])) {
for (unsigned j = 0; j < i; j++) {
msgbuf_pool_put(msgbuf_pool, msgbuf[j]);
return 0;
}
break;
}
}
return -1;
}
off_t
msgbuf_pool_get_id(msgbuf_pool_t * msgbuf_pool, msgbuf_t * msgbuf)
{
return msgbuf - msgbuf_pool->buffers;
}
msgbuf_t *
msgbuf_pool_at(const msgbuf_pool_t * msgbuf_pool, off_t id)
{
return msgbuf_pool->buffers + id;
}
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