120 lines
4.4 KiB
C
120 lines
4.4 KiB
C
/****************************************************************************
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* sched/pthread/pthread.h
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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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#ifndef __SCHED_PTHREAD_PTHREAD_H
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#define __SCHED_PTHREAD_PTHREAD_H
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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 <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <pthread.h>
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#include <sched.h>
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#include <nuttx/compiler.h>
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/****************************************************************************
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* Public Type Declarations
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****************************************************************************/
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/* The following defines an entry in the pthread logic's local data set.
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* Note that this structure is used to implemented a singly linked list.
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* This structure is used (instead of, say, a binary search tree) because
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* the data set will be searched using the pid as a key -- a process IDs will
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* always be created in a montonically increasing fashion.
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*/
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struct join_s
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{
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FAR struct join_s *next; /* Implements link list */
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uint8_t crefs; /* Reference count */
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bool started; /* true: pthread started. */
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bool detached; /* true: pthread_detached'ed */
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bool terminated; /* true: detach'ed+exit'ed */
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pthread_t thread; /* Includes pid */
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sem_t exit_sem; /* Implements join */
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sem_t data_sem; /* Implements join */
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pthread_addr_t exit_value; /* Returned data */
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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struct pthread_tcb_s; /* Forward reference */
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struct task_group_s; /* Forward reference */
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int pthread_setup_scheduler(FAR struct pthread_tcb_s *tcb, int priority,
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start_t start, pthread_startroutine_t entry);
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int pthread_completejoin(pid_t pid, FAR void *exit_value);
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void pthread_destroyjoin(FAR struct task_group_s *group,
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FAR struct join_s *pjoin);
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FAR struct join_s *pthread_findjoininfo(FAR struct task_group_s *group,
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pid_t pid);
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void pthread_release(FAR struct task_group_s *group);
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int pthread_sem_take(FAR sem_t *sem, FAR const struct timespec *abs_timeout,
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bool intr);
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#ifdef CONFIG_PTHREAD_MUTEX_UNSAFE
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int pthread_sem_trytake(sem_t *sem);
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#endif
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int pthread_sem_give(sem_t *sem);
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#ifndef CONFIG_PTHREAD_MUTEX_UNSAFE
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int pthread_mutex_take(FAR struct pthread_mutex_s *mutex,
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FAR const struct timespec *abs_timeout, bool intr);
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int pthread_mutex_trytake(FAR struct pthread_mutex_s *mutex);
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int pthread_mutex_give(FAR struct pthread_mutex_s *mutex);
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void pthread_mutex_inconsistent(FAR struct tcb_s *tcb);
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#else
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# define pthread_mutex_take(m,abs_timeout,i) pthread_sem_take(&(m)->sem,(abs_timeout),(i))
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# define pthread_mutex_trytake(m) pthread_sem_trytake(&(m)->sem)
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# define pthread_mutex_give(m) pthread_sem_give(&(m)->sem)
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#endif
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#ifdef CONFIG_PTHREAD_MUTEX_TYPES
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int pthread_mutexattr_verifytype(int type);
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#endif
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __SCHED_PTHREAD_PTHREAD_H */
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