85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/****************************************************************************
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* mm/iob/iob_statistics.c
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*
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* SPDX-License-Identifier: Apache-2.0
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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/mm/iob.h>
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#include "iob.h"
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#if !defined(CONFIG_DISABLE_MOUNTPOINT) && defined(CONFIG_FS_PROCFS) && \
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!defined(CONFIG_FS_PROCFS_EXCLUDE_IOBINFO)
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: iob_getuserstats
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*
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* Description:
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* Return a reference to the IOB usage statistics for the IOB
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* consumer/producer
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*
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* Input Parameters:
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* stats - point to IOB usage statistics
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*
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* Returned Value:
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* None.
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*
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****************************************************************************/
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void iob_getstats(FAR struct iob_stats_s *stats)
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{
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stats->ntotal = CONFIG_IOB_NBUFFERS;
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nxsem_get_value(&g_iob_sem, &stats->nfree);
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if (stats->nfree < 0)
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{
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stats->nwait = -stats->nfree;
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stats->nfree = 0;
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}
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else
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{
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stats->nwait = 0;
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}
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#if CONFIG_IOB_THROTTLE > 0
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nxsem_get_value(&g_throttle_sem, &stats->nthrottle);
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if (stats->nthrottle < 0)
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{
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stats->nthrottle = -stats->nthrottle;
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}
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else
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#endif
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{
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stats->nthrottle = 0;
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}
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}
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#endif /* !CONFIG_DISABLE_MOUNTPOINT && CONFIG_FS_PROCFS &&
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* !CONFIG_FS_PROCFS_EXCLUDE_IOBINFO */
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