/**************************************************************************** * sched/pthread/pthread.h * * Copyright (C) 2007-2009, 2011, 2013-2014 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ #ifndef __SCHED_PTHREAD_PTHREAD_H #define __SCHED_PTHREAD_PTHREAD_H /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /**************************************************************************** * Public Type Declarations ****************************************************************************/ /* The following defines an entry in the pthread logic's local data set. * Note that this structure is used to implemented a singly linked list. * This structure is used (instead of, say, a binary search tree) because * the data set will be searched using the pid as a key -- a process IDs will * always be created in a montonically increasing fashion. */ struct join_s { FAR struct join_s *next; /* Implements link list */ uint8_t crefs; /* Reference count */ bool started; /* true: pthread started. */ bool detached; /* true: pthread_detached'ed */ bool terminated; /* true: detach'ed+exit'ed */ pthread_t thread; /* Includes pid */ sem_t exit_sem; /* Implements join */ sem_t data_sem; /* Implements join */ pthread_addr_t exit_value; /* Returned data */ }; /**************************************************************************** * Public Data ****************************************************************************/ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /**************************************************************************** * Public Function Prototypes ****************************************************************************/ struct pthread_tcb_s; /* Forward reference */ struct task_group_s; /* Forward reference */ void weak_function pthread_initialize(void); int pthread_schedsetup(FAR struct pthread_tcb_s *tcb, int priority, start_t start, pthread_startroutine_t entry); int pthread_completejoin(pid_t pid, FAR void *exit_value); void pthread_destroyjoin(FAR struct task_group_s *group, FAR struct join_s *pjoin); FAR struct join_s *pthread_findjoininfo(FAR struct task_group_s *group, pid_t pid); void pthread_release(FAR struct task_group_s *group); int pthread_givesemaphore(sem_t *sem); int pthread_takesemaphore(sem_t *sem); #ifdef CONFIG_MUTEX_TYPES int pthread_mutexattr_verifytype(int type); #endif #undef EXTERN #ifdef __cplusplus } #endif #endif /* __SCHED_PTHREAD_PTHREAD_H */