150 lines
4.5 KiB
C
150 lines
4.5 KiB
C
/****************************************************************************
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* sched/tls/task_uninitinfo.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/nuttx.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/mutex.h>
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#include <nuttx/list.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_uninit_stream
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*
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* Description:
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* This function is called when a TCB is destroyed. Note that it does not
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* close the files by releasing the inode. That happens separately when
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* the file descriptor list is freed.
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*
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****************************************************************************/
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#ifdef CONFIG_FILE_STREAM
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static void task_uninit_stream(FAR struct task_group_s *group)
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{
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FAR struct streamlist *list;
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FAR struct file_struct *stream;
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FAR sq_entry_t *curr;
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FAR sq_entry_t *next;
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DEBUGASSERT(group && group->tg_info);
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list = &group->tg_info->ta_streamlist;
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stream = list->sl_std;
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/* Destroy the mutex and release the filelist */
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nxmutex_destroy(&list->sl_lock);
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/* Destroy stdin, stdout and stderr stream */
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#ifndef CONFIG_STDIO_DISABLE_BUFFERING
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nxrmutex_destroy(&stream[0].fs_lock);
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nxrmutex_destroy(&stream[1].fs_lock);
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nxrmutex_destroy(&stream[2].fs_lock);
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#endif
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/* Release each stream in the list */
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sq_for_every_safe(&list->sl_queue, curr, next)
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{
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stream = container_of(curr, struct file_struct, fs_entry);
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#ifndef CONFIG_STDIO_DISABLE_BUFFERING
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/* Destroy the mutex that protects the IO buffer */
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nxrmutex_destroy(&stream->fs_lock);
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#endif
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/* Release the stream */
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#ifdef CONFIG_BUILD_KERNEL
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/* If the exiting group is unprivileged, then it has an address
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* environment. Don't bother to release the memory in this case...
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* There is no point since the memory lies in the user heap which
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* will be destroyed anyway. But if this is a privileged group,
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* when we still have to release the memory using the kernel
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* allocator.
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*/
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if ((group->tg_flags & GROUP_FLAG_PRIVILEGED) != 0)
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#endif
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{
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group_free(group, stream);
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}
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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_uninit_info
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*
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* Description:
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* Uninitilize and free 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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* None.
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*
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****************************************************************************/
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void task_uninit_info(FAR struct task_group_s *group)
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{
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FAR struct task_info_s *info = group->tg_info;
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#ifdef CONFIG_PTHREAD_ATFORK
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/* Remove the functions that registered with pthread_atfork() */
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FAR struct list_node *list = &info->ta_atfork;
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FAR struct pthread_atfork_s *entry;
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while (!list_is_empty(list))
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{
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entry = list_first_entry(list,
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struct pthread_atfork_s, node);
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list_delete_init(&entry->node);
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lib_free(entry);
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}
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#endif
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#ifdef CONFIG_FILE_STREAM
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/* Free resource held by the stream list */
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task_uninit_stream(group);
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#endif /* CONFIG_FILE_STREAM */
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nxmutex_destroy(&info->ta_lock);
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#ifdef CONFIG_MM_KERNEL_HEAP
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group_free(group, info);
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#endif
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}
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