150 lines
4.4 KiB
C
150 lines
4.4 KiB
C
/****************************************************************************
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* sched/tls/task_initinfo.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 <errno.h>
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#include <fcntl.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/mutex.h>
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#include "tls.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: task_init_stream
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*
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* Description:
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* This function is called when a new task is allocated. It initializes
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* the streamlist instance that is stored in the task group.
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*
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****************************************************************************/
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#ifdef CONFIG_FILE_STREAM
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static void task_init_stream(FAR struct streamlist *list)
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{
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FAR struct file_struct *stream = list->sl_std;
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int i;
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/* Initialize the list access mutex */
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nxmutex_init(&list->sl_lock);
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sq_init(&list->sl_queue);
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/* Initialize stdin, stdout and stderr stream */
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for (i = 0; i < 3; i++)
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{
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nxrmutex_init(&stream[i].fs_lock);
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#if !defined(CONFIG_STDIO_DISABLE_BUFFERING) && CONFIG_STDIO_BUFFER_SIZE > 0
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/* Set up pointers */
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stream[i].fs_bufstart = stream[i].fs_buffer;
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stream[i].fs_bufend = stream[i].fs_bufstart +
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CONFIG_STDIO_BUFFER_SIZE;
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stream[i].fs_bufpos = stream[i].fs_bufstart;
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stream[i].fs_bufread = stream[i].fs_bufstart;
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stream[i].fs_flags = __FS_FLAG_UBF; /* Fake setvbuf and fclose */
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# ifdef CONFIG_STDIO_LINEBUFFER
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/* Setup buffer flags */
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stream[i].fs_flags |= __FS_FLAG_LBF; /* Line buffering */
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# endif /* CONFIG_STDIO_LINEBUFFER */
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/* Save the file description and open flags. Setting the
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* file descriptor locks this stream.
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*/
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stream[i].fs_cookie = (FAR void *)(intptr_t)i;
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stream[i].fs_oflags = i ? O_WROK : O_RDONLY;
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/* Assign custom callbacks to NULL. */
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stream[i].fs_iofunc.read = NULL;
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stream[i].fs_iofunc.write = NULL;
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stream[i].fs_iofunc.seek = NULL;
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stream[i].fs_iofunc.close = NULL;
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#endif /* !CONFIG_STDIO_DISABLE_BUFFERING && CONFIG_STDIO_BUFFER_SIZE > 0 */
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}
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: task_init_info
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*
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* Description:
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* Allocate and initialize task_info_s structure.
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*
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* Input Parameters:
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* - group: The group of new task
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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int task_init_info(FAR struct task_group_s *group)
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{
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FAR struct task_info_s *info;
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/* Allocate task info for group */
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#ifdef CONFIG_MM_KERNEL_HEAP
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info = group_zalloc(group, sizeof(struct task_info_s));
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if (info == NULL)
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{
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return -ENOMEM;
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}
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#else
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info = &group->tg_info_;
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#endif
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/* Initialize user space mutex */
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nxmutex_init(&info->ta_lock);
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group->tg_info = info;
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#ifdef CONFIG_PTHREAD_ATFORK
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list_initialize(&info->ta_atfork);
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#endif
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#ifdef CONFIG_FILE_STREAM
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/* Initialize file streams for the task group */
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task_init_stream(&info->ta_streamlist);
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#endif
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return OK;
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}
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