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134 lines
4.6 KiB
134 lines
4.6 KiB
/************************************************************************ |
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* include/queue.h |
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* |
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* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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************************************************************************/ |
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#ifndef __INCLUDE_QUEUE_H |
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#define __INCLUDE_QUEUE_H |
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/************************************************************************ |
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* Included Files |
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************************************************************************/ |
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#include <sys/types.h> |
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#ifdef __cplusplus |
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#include <cstddef> // NULL |
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#else |
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#include <stddef.h> // NULL |
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#endif |
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/************************************************************************ |
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* Pre-processor Definitions |
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************************************************************************/ |
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#define sq_init(q) do { (q)->head = NULL; (q)->tail = NULL; } while (0) |
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#define dq_init(q) do { (q)->head = NULL; (q)->tail = NULL; } while (0) |
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#define sq_next(p) ((p)->flink) |
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#define dq_next(p) ((p)->flink) |
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#define dq_prev(p) ((p)->blink) |
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#define sq_empty(q) ((q)->head == NULL) |
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#define dq_empty(q) ((q)->head == NULL) |
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#define sq_peek(q) ((q)->head) |
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#define dq_peek(q) ((q)->head) |
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// Required for Linux |
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#define FAR |
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/************************************************************************ |
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* Global Type Declarations |
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************************************************************************/ |
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struct sq_entry_s { |
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FAR struct sq_entry_s *flink; |
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}; |
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typedef struct sq_entry_s sq_entry_t; |
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struct dq_entry_s { |
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FAR struct dq_entry_s *flink; |
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FAR struct dq_entry_s *blink; |
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}; |
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typedef struct dq_entry_s dq_entry_t; |
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struct sq_queue_s { |
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FAR sq_entry_t *head; |
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FAR sq_entry_t *tail; |
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}; |
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typedef struct sq_queue_s sq_queue_t; |
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struct dq_queue_s { |
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FAR dq_entry_t *head; |
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FAR dq_entry_t *tail; |
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}; |
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typedef struct dq_queue_s dq_queue_t; |
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/************************************************************************ |
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* Global Function Prototypes |
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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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#else |
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#define EXTERN extern |
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#endif |
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EXTERN void sq_addfirst(FAR sq_entry_t *node, sq_queue_t *queue); |
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EXTERN void dq_addfirst(FAR dq_entry_t *node, dq_queue_t *queue); |
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EXTERN void sq_addlast(FAR sq_entry_t *node, sq_queue_t *queue); |
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EXTERN void dq_addlast(FAR dq_entry_t *node, dq_queue_t *queue); |
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EXTERN void sq_addafter(FAR sq_entry_t *prev, FAR sq_entry_t *node, |
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sq_queue_t *queue); |
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EXTERN void dq_addafter(FAR dq_entry_t *prev, FAR dq_entry_t *node, |
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dq_queue_t *queue); |
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EXTERN void dq_addbefore(FAR dq_entry_t *next, FAR dq_entry_t *node, |
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dq_queue_t *queue); |
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EXTERN FAR sq_entry_t *sq_remafter(FAR sq_entry_t *node, sq_queue_t *queue); |
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EXTERN void sq_rem(FAR sq_entry_t *node, sq_queue_t *queue); |
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EXTERN void dq_rem(FAR dq_entry_t *node, dq_queue_t *queue); |
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EXTERN FAR sq_entry_t *sq_remlast(sq_queue_t *queue); |
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EXTERN FAR dq_entry_t *dq_remlast(dq_queue_t *queue); |
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EXTERN FAR sq_entry_t *sq_remfirst(sq_queue_t *queue); |
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EXTERN FAR dq_entry_t *dq_remfirst(dq_queue_t *queue); |
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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 /* __INCLUDE_QUEUE_H_ */ |
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