slist.h

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/****************************************************************************
 *
 *  Copyright (c) 2017, Michael Becker (michael.f.becker@gmail.com)
 *
 *  This file is part of the FreeRTOS Add-ons project.
 *
 *  Source Code:
 *  https://github.com/michaelbecker/freertos-addons
 *
 *  Project Page:
 *  http://michaelbecker.github.io/freertos-addons/
 *
 *  On-line Documentation:
 *  http://michaelbecker.github.io/freertos-addons/docs/html/index.html
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a
 *  copy of this software and associated documentation files
 *  (the "Software"), to deal in the Software without restriction, including
 *  without limitation the rights to use, copy, modify, merge, publish,
 *  distribute, sublicense, and/or sell copies of the Software, and to
 *  permit persons to whom the Software is furnished to do so,subject to the
 *  following conditions:
 *
 *  + The above copyright notice and this permission notice shall be included
 *    in all copies or substantial portions of the Software.
 *  + Credit is appreciated, but not required, if you find this project
 *    useful enough to include in your application, product, device, etc.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 *  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 *  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 *  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 *  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 *  SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 ***************************************************************************/


#ifndef SLIST_H_
#define SLIST_H_


typedef struct SlNode_t_ {
    
    struct SlNode_t_ *Next;

} SlNode_t;


#define SlInitHead(_head) \
    (_head)->Next = NULL;


#define SlAddNodeToHead(_head, _node) \
    SlInsertNodeAfter(_head, _node)


void SlAddNodeToTail(   SlNode_t *Head,
                        SlNode_t *Node);


SlNode_t *SlRemoveNodeFromHead(SlNode_t *Head);


SlNode_t *SlRemoveNodeFromTail(SlNode_t *Head);


#define SlIsListEmpty(_head) \
    ((_head)->Next == NULL)


void SlInsertNodeAfter( SlNode_t *Marker,
                        SlNode_t *Node);


void SlInsertNodeBefore(SlNode_t *Head, 
                        SlNode_t *Marker, 
                        SlNode_t *Node);


void SlRemoveNode(  SlNode_t *Head, 
                    SlNode_t *Node);


#ifndef OFFSET_OF
#define OFFSET_OF(_type, _field)    \
    ((size_t)&((_type *)0)->_field)
#endif


#ifndef CONTAINING_RECORD
#define CONTAINING_RECORD(_address, _type, _field)  \
    ((_type *)((unsigned char *)(_address) - OFFSET_OF(_type, _field)))
#endif


#define SlForEachNode(_head, _node) \
    for ((_node) = (_head)->Next; (_node) != NULL; (_node) = (_node)->Next)


#endif