nuttx/sched/tls/task_uninitinfo.c
chao an 954bffcbd7 sched/tls: inline group info in flat mode to improve performance
inline group info in flat mode to improve the task create/destroy performance

Signed-off-by: chao an <anchao@lixiang.com>
2024-03-01 17:27:26 +08:00

149 lines
4.5 KiB
C

/****************************************************************************
* sched/tls/task_uninitinfo.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/kmalloc.h>
#include <nuttx/mutex.h>
#include <nuttx/list.h>
#include "tls.h"
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: task_uninit_stream
*
* Description:
* This function is called when a TCB is destroyed. Note that it does not
* close the files by releasing the inode. That happens separately when
* the file descriptor list is freed.
*
****************************************************************************/
#ifdef CONFIG_FILE_STREAM
static void task_uninit_stream(FAR struct task_group_s *group)
{
FAR struct streamlist *list;
FAR struct file_struct *stream;
DEBUGASSERT(group && group->tg_info);
list = &group->tg_info->ta_streamlist;
stream = list->sl_std;
/* Destroy the mutex and release the filelist */
nxmutex_destroy(&list->sl_lock);
/* Destroy stdin, stdout and stderr stream */
#ifndef CONFIG_STDIO_DISABLE_BUFFERING
nxrmutex_destroy(&stream[0].fs_lock);
nxrmutex_destroy(&stream[1].fs_lock);
nxrmutex_destroy(&stream[2].fs_lock);
#endif
/* Release each stream in the list */
list->sl_tail = NULL;
while (list->sl_head != NULL)
{
stream = list->sl_head;
list->sl_head = stream->fs_next;
#ifndef CONFIG_STDIO_DISABLE_BUFFERING
/* Destroy the mutex that protects the IO buffer */
nxrmutex_destroy(&stream->fs_lock);
#endif
/* Release the stream */
#ifdef CONFIG_BUILD_KERNEL
/* If the exiting group is unprivileged, then it has an address
* environment. Don't bother to release the memory in this case...
* There is no point since the memory lies in the user heap which
* will be destroyed anyway. But if this is a privileged group,
* when we still have to release the memory using the kernel
* allocator.
*/
if ((group->tg_flags & GROUP_FLAG_PRIVILEGED) != 0)
#endif
{
group_free(group, stream);
}
}
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: task_uninit_info
*
* Description:
* Uninitilize and free task_info_s structure.
*
* Input Parameters:
* - group: The group of new task
*
* Returned Value:
* None.
*
****************************************************************************/
void task_uninit_info(FAR struct task_group_s *group)
{
FAR struct task_info_s *info = group->tg_info;
#ifdef CONFIG_PTHREAD_ATFORK
/* Remove the functions that registered with pthread_atfork() */
FAR struct list_node *list = &info->ta_atfork;
FAR struct pthread_atfork_s *entry;
while (!list_is_empty(list))
{
entry = list_first_entry(list,
struct pthread_atfork_s, node);
list_delete_init(&entry->node);
lib_free(entry);
}
#endif
#ifdef CONFIG_FILE_STREAM
/* Free resource held by the stream list */
task_uninit_stream(group);
#endif /* CONFIG_FILE_STREAM */
nxmutex_destroy(&info->ta_lock);
#ifdef CONFIG_MM_KERNEL_HEAP
group_free(group, info);
#endif
}