70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/****************************************************************************
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* sched/mqueue/mq_getattr.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 <mqueue.h>
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#include <nuttx/mqueue.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mq_getattr
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*
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* Description:
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* This functions gets status information and attributes
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* associated with the specified message queue.
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*
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* Input Parameters:
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* mqdes - Message queue descriptor
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* mq_stat - Buffer in which to return attributes
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*
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* Returned Value:
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* 0 (OK) if attributes provided, -1 (ERROR) otherwise.
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*
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* Assumptions:
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*
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****************************************************************************/
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int mq_getattr(mqd_t mqdes, struct mq_attr *mq_stat)
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{
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int ret = ERROR;
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if (mqdes && mq_stat)
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{
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/* Return the attributes */
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mq_stat->mq_maxmsg = mqdes->msgq->maxmsgs;
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mq_stat->mq_msgsize = mqdes->msgq->maxmsgsize;
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mq_stat->mq_flags = mqdes->oflags;
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mq_stat->mq_curmsgs = mqdes->msgq->nmsgs;
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ret = OK;
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}
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return ret;
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}
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