87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/****************************************************************************
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* libs/libc/pthread/pthread_atfork.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/tls.h>
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#include <nuttx/lib/lib.h>
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#include <pthread.h>
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#include <errno.h>
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#include <stdlib.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pthread_atfork
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*
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* Description:
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* To register the methods that need to be executed when fork is called
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* by any thread in a process
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*
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* Input Parameters:
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* prepare - the method that is executed in the parent process before
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* fork() processing is started
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* parent - the method that is executed in the parent process after fork()
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* processing completes
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* child - the method that is executed in the child process after fork()
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* processing completes
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*
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* Returned Value:
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* On success, pthread_atfork() returns 0.
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* On error, pthread_atfork() returns errno.
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*
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* Assumptions:
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*
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****************************************************************************/
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int pthread_atfork(CODE void (*prepare)(void),
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CODE void (*parent)(void),
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CODE void (*child)(void))
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{
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#ifdef CONFIG_PTHREAD_ATFORK
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FAR struct task_info_s *info = task_get_info();
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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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(FAR struct pthread_atfork_s *)
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lib_malloc(sizeof(struct pthread_atfork_s));
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if (entry == NULL)
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{
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return ENOMEM;
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}
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list_initialize(&entry->node);
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entry->prepare = prepare;
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entry->parent = parent;
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entry->child = child;
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nxmutex_lock(&info->ta_lock);
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list_add_head(list, &entry->node);
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nxmutex_unlock(&info->ta_lock);
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#endif
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return OK;
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}
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