92 lines
3.2 KiB
C
92 lines
3.2 KiB
C
/****************************************************************************
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* libs/libc/pthread/pthread_create.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 <assert.h>
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#include <nuttx/pthread.h>
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pthread_startup
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*
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* Description:
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* This function is the user space pthread startup function. Its purpose
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* is to catch the return from the pthread main function so that
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* pthread_exit() can be called from user space
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*
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* Input Parameters:
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* entry - The user-space address of the pthread entry point
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* arg - Standard argument for the pthread entry point
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*
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* Returned Value:
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* None. This function does not return.
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*
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****************************************************************************/
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static void pthread_startup(pthread_startroutine_t entry,
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pthread_addr_t arg)
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{
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DEBUGASSERT(entry != NULL);
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/* Pass control to the thread entry point. Handle any returned value. */
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pthread_exit(entry(arg));
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pthread_create
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*
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* Description:
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* This function creates and activates a new thread with specified
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* attributes. It is simply a wrapper around the nx_pthread_create system
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* call.
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*
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* Input Parameters:
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* thread
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* attr
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* pthread_entry
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* arg
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*
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* Returned Value:
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* OK (0) on success; a (non-negated) errno value on failure. The errno
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* variable is not set.
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*
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****************************************************************************/
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int pthread_create(FAR pthread_t *thread, FAR const pthread_attr_t *attr,
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pthread_startroutine_t pthread_entry, pthread_addr_t arg)
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{
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return nx_pthread_create(pthread_startup, thread, attr, pthread_entry,
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arg);
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}
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