nuttx/libs/libc/queue/dq_addlast.c

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/****************************************************************************
* libs/libc/queue/dq_addlast.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <queue.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: dq_addlast
*
* Description:
* dq_addlast adds 'node' to the end of 'queue'
*
****************************************************************************/
void dq_addlast(FAR dq_entry_t *node, dq_queue_t *queue)
{
node->flink = NULL;
node->blink = queue->tail;
if (!queue->head)
{
queue->head = node;
queue->tail = node;
}
else
{
queue->tail->flink = node;
queue->tail = node;
}
}