ad2f82898a
and merge lib_streamsem.c to lib_stream.c Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
/****************************************************************************
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* libs/libc/stdio/lib_libflushall.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 <stdbool.h>
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#include <fcntl.h>
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#include <errno.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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/****************************************************************************
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* Name: lib_flushall
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*
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* Description:
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* Called either (1) by the OS when a task exits, or (2) from fflush()
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* when a NULL stream argument is provided.
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*
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****************************************************************************/
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int lib_flushall(FAR struct streamlist *list)
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{
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int lasterrno = OK;
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int ret;
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/* Make sure that there are streams associated with this thread */
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if (list)
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{
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FAR FILE *stream;
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/* Process each stream in the thread's stream list */
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lib_stream_semtake(list);
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stream = list->sl_head;
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for (; stream != NULL; stream = stream->fs_next)
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{
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/* If the stream is opened for writing, then flush all of
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* the pending write data in the stream.
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*/
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if ((stream->fs_oflags & O_WROK) != 0)
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{
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/* Flush the writable FILE */
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ret = lib_fflush(stream, true);
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if (ret < 0)
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{
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/* An error occurred during the flush AND/OR we were unable
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* to flush all of the buffered write data. Remember the
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* last errcode.
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*/
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lasterrno = ret;
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}
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}
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}
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lib_stream_semgive(list);
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}
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/* If any flush failed, return the errorcode of the last failed flush */
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return lasterrno;
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}
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