93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT 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 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file lists.h
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* @brief Thread queues/lists macros and structures.
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* @addtogroup internals
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* @{
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*/
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#ifndef _LISTS_H_
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#define _LISTS_H_
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typedef struct Thread Thread;
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/**
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* Threads queue initialization.
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*/
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#define queue_init(tqp) ((tqp)->p_next = (tqp)->p_prev = (Thread *)(tqp));
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/**
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* Macro evaluating to @p TRUE if the specified threads queue is empty.
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*/
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#define isempty(p) ((p)->p_next == (Thread *)(p))
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/**
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* Macro evaluating to @p TRUE if the specified threads queue is not empty.
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*/
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#define notempty(p) ((p)->p_next != (Thread *)(p))
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/**
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* @brief Data part of a static threads queue initializer.
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* @details This macro should be used when statically initializing a threads
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* queue that is part of a bigger structure.
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* @param name the name of the threads queue variable
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*/
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#define _THREADSQUEUE_DATA(name) {(Thread *)&name, (Thread *)&name}
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/**
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* @brief Static threads queue initializer.
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* @details Statically initialized threads queues require no explicit
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* initialization using @p queue_init().
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* @param name the name of the threads queue variable
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*/
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#define THREADSQUEUE_DECL(name) ThreadsQueue name = _THREADSQUEUE_DATA(name)
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/**
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* @brief Generic threads bidirectional linked list header and element.
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* @extends ThreadsList
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*/
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typedef struct {
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Thread *p_next; /**< First @p Thread in the queue, or
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@p ThreadQueue when empty.*/
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Thread *p_prev; /**< Last @p Thread in the queue, or
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@p ThreadQueue when empty.*/
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} ThreadsQueue;
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#if !CH_OPTIMIZE_SPEED
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#ifdef __cplusplus
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extern "C" {
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#endif
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void prio_insert(Thread *tp, ThreadsQueue *tqp);
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void queue_insert(Thread *tp, ThreadsQueue *tqp);
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Thread *fifo_remove(ThreadsQueue *tqp);
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Thread *lifo_remove(ThreadsQueue *tqp);
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Thread *dequeue(Thread *tp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !CH_OPTIMIZE_SPEED */
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#endif /* _LISTS_H_ */
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/** @} */
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