74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*
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* File : waitqueue.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2018/06/26 Bernard Fix the wait queue issue when wakeup a soon
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* to blocked thread.
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*/
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#ifndef WAITQUEUE_H__
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#define WAITQUEUE_H__
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#include <rtthread.h>
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#define RT_WQ_FLAG_CLEAN 0x00
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#define RT_WQ_FLAG_WAKEUP 0x01
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struct rt_wqueue_node;
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typedef int (*rt_wqueue_func_t)(struct rt_wqueue_node *wait, void *key);
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struct rt_wqueue_node
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{
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rt_thread_t polling_thread;
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rt_list_t list;
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rt_wqueue_func_t wakeup;
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rt_uint32_t key;
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};
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typedef struct rt_wqueue_node rt_wqueue_node_t;
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int __wqueue_default_wake(struct rt_wqueue_node *wait, void *key);
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rt_inline void rt_wqueue_init(rt_wqueue_t *queue)
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{
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RT_ASSERT(queue != RT_NULL);
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queue->flag = RT_WQ_FLAG_CLEAN;
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rt_list_init(&(queue->waiting_list));
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}
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void rt_wqueue_add(rt_wqueue_t *queue, struct rt_wqueue_node *node);
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void rt_wqueue_remove(struct rt_wqueue_node *node);
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int rt_wqueue_wait(rt_wqueue_t *queue, int condition, int timeout);
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void rt_wqueue_wakeup(rt_wqueue_t *queue, void *key);
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#define DEFINE_WAIT_FUNC(name, function) \
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struct rt_wqueue_node name = { \
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rt_current_thread, \
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RT_LIST_OBJECT_INIT(((name).list)), \
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\
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function, \
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0 \
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}
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#define DEFINE_WAIT(name) DEFINE_WAIT_FUNC(name, __wqueue_default_wake)
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#endif
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