nuttx/libs/libc/wqueue/wqueue.h

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/****************************************************************************
* libs/libc/wqueue/wqueue.h
*
* 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.
*
****************************************************************************/
#ifndef __LIBC_WQUEUE_WQUEUE_H
#define __LIBC_WQUEUE_WQUEUE_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <semaphore.h>
#include <pthread.h>
#include <nuttx/wqueue.h>
#if defined(CONFIG_LIBC_USRWORK) && !defined(__KERNEL__)
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Type Definitions
****************************************************************************/
/* This structure defines the state of one user-modework queue. */
struct usr_wqueue_s
{
struct sq_queue_s q; /* The queue of pending work */
sem_t lock; /* exclusive access to user-mode work queue */
sem_t wake; /* The wake-up semaphore of the usrthread */
};
/****************************************************************************
* Public Data
****************************************************************************/
/* The state of the user mode work queue */
extern struct usr_wqueue_s g_usrwork;
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#endif /* CONFIG_LIBC_USRWORK && !__KERNEL__*/
#endif /* __LIBC_WQUEUE_WQUEUE_H */