b7c451c5a4
Gregory Nutt has submitted the SGA and we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/****************************************************************************
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* libs/libc/misc/lib_streamsem.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 <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <errno.h>
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#include <nuttx/semaphore.h>
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#include <nuttx/fs/fs.h>
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#include "libc.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void stream_semtake(FAR struct streamlist *list)
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{
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int ret;
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/* Take the semaphore (perhaps waiting) */
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while ((ret = _SEM_WAIT(&list->sl_sem)) < 0)
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{
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/* The only case that an error should occr here is if
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* the wait was awakened by a signal.
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*/
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DEBUGASSERT(_SEM_ERRNO(ret) == EINTR || _SEM_ERRNO(ret) == ECANCELED);
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UNUSED(ret);
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}
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}
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void stream_semgive(FAR struct streamlist *list)
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{
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_SEM_POST(&list->sl_sem);
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}
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