ssp_list.c

来自「abstract rtos」· C语言 代码 · 共 105 行

#ifdef __cplusplus
extern "C"{
#endif 


#include "syscfg.h"
#include "sys/sys_pub.h"

#include "aos.h"






static AOS_INLINE void __list_add(struct aos_list *new_node,
			      struct aos_list *prev,
			      struct aos_list *next)
{
	next->prev = new_node;
	new_node->next = next;
	new_node->prev = prev;
	prev->next = new_node;
}

static AOS_INLINE void __list_del(struct aos_list *prev, struct aos_list *next)
{
	next->prev = prev;
	prev->next = next;
}



VOID aos_list_init( struct aos_list *list )
{
    if(AOS_ADDR_INVALID(list))
    {
        AOS_ASSERT(0);
        return;
    }
    list->prev = list;
    list->next = list;
}

VOID aos_list_add_head( struct aos_list *list, struct aos_list *node )
{
    if(AOS_ADDR_INVALID(list)
    || AOS_ADDR_INVALID(node))
    {
        AOS_ASSERT(0);
        return;
    }
	__list_add(node, list, list->next);
}

VOID aos_list_add_tail( struct aos_list *list, struct aos_list *node )
{
    if(AOS_ADDR_INVALID(list)
    || AOS_ADDR_INVALID(node))
    {
        AOS_ASSERT(0);
        return;
    }
	__list_add(node, list->prev, list);
}

struct aos_list *aos_list_fetch( struct aos_list *list )
{
    struct aos_list *node = NULL;

    if(AOS_ADDR_INVALID(list))
    {
        AOS_ASSERT(0);
        return NULL;
    }

    if( list->next != list )
    {
        node = list->next;        
    	__list_del(node->prev, node->next);
    	node->next = NULL;
    	node->prev = NULL;
    }
    return node;
}

VOID aos_list_delete( struct aos_list *node )
{
    if(AOS_ADDR_INVALID(node))
    {
        AOS_ASSERT(0);
        return;
    }
    
	__list_del(node->prev, node->next);
	node->next = NULL;
	node->prev = NULL;
}


#ifdef __cplusplus
}
#endif