55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/****************************************************************************
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* libs/libc/queue/sq_count.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/queue.h>
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#include <assert.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sq_count
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*
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* Description:
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* Return the number of nodes in the queue.
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*
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****************************************************************************/
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size_t sq_count(FAR sq_queue_t *queue)
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{
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FAR sq_entry_t *node;
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size_t count;
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DEBUGASSERT(queue != NULL);
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for (node = queue->head, count = 0;
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node != NULL;
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node = node->flink, count++);
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return count;
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}
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