nuttx/libs/libc/queue/sq_remafter.c
Xiang Xiao 40ef5bc6db libc: Move queue.h from include to include/nuttx
to avoid the conflict with libuv's queue.h

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-09-26 08:04:58 +02:00

61 lines
2.0 KiB
C

/****************************************************************************
* libs/libc/queue/sq_remafter.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 <nuttx/queue.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: sq_remafter
*
* Description:
* sq_remafter removes the entry following 'node' from the 'queue'.
* Returns a reference to the removed entry.
*
****************************************************************************/
FAR sq_entry_t *sq_remafter(FAR sq_entry_t *node, sq_queue_t *queue)
{
FAR sq_entry_t *ret = node->flink;
if (queue->head && ret)
{
if (queue->tail == ret)
{
queue->tail = node;
node->flink = NULL;
}
else
{
node->flink = ret->flink;
}
ret->flink = NULL;
}
return ret;
}