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/*
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
*
* 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.
*
* 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 NVGPU_LIST_H
#define NVGPU_LIST_H
#include <nvgpu/types.h>
struct nvgpu_list_node {
struct nvgpu_list_node *prev;
struct nvgpu_list_node *next;
};
static inline void nvgpu_init_list_node(struct nvgpu_list_node *node)
{
node->prev = node;
node->next = node;
}
static inline void nvgpu_list_add(struct nvgpu_list_node *new_node, struct nvgpu_list_node *head)
{
new_node->next = head->next;
new_node->next->prev = new_node;
new_node->prev = head;
head->next = new_node;
}
static inline void nvgpu_list_add_tail(struct nvgpu_list_node *new_node, struct nvgpu_list_node *head)
{
new_node->prev = head->prev;
new_node->prev->next = new_node;
new_node->next = head;
head->prev = new_node;
}
static inline void nvgpu_list_del(struct nvgpu_list_node *node)
{
node->prev->next = node->next;
node->next->prev = node->prev;
nvgpu_init_list_node(node);
}
static inline bool nvgpu_list_empty(struct nvgpu_list_node *head)
{
return head->next == head;
}
static inline void nvgpu_list_move(struct nvgpu_list_node *node, struct nvgpu_list_node *head)
{
nvgpu_list_del(node);
nvgpu_list_add(node, head);
}
static inline void nvgpu_list_replace_init(struct nvgpu_list_node *old_node, struct nvgpu_list_node *new_node)
{
new_node->next = old_node->next;
new_node->next->prev = new_node;
new_node->prev = old_node->prev;
new_node->prev->next = new_node;
nvgpu_init_list_node(old_node);
}
#define nvgpu_list_entry(ptr, type, member) \
type ## _from_ ## member(ptr)
#define nvgpu_list_next_entry(pos, type, member) \
nvgpu_list_entry((pos)->member.next, type, member)
#define nvgpu_list_first_entry(ptr, type, member) \
nvgpu_list_entry((ptr)->next, type, member)
#define nvgpu_list_last_entry(ptr, type, member) \
nvgpu_list_entry((ptr)->prev, type, member)
#define nvgpu_list_for_each_entry(pos, head, type, member) \
for (pos = nvgpu_list_first_entry(head, type, member); \
&pos->member != (head); \
pos = nvgpu_list_next_entry(pos, type, member))
#define nvgpu_list_for_each_entry_safe(pos, n, head, type, member) \
for (pos = nvgpu_list_first_entry(head, type, member), \
n = nvgpu_list_next_entry(pos, type, member); \
&pos->member != (head); \
pos = n, n = nvgpu_list_next_entry(n, type, member))
#endif /* NVGPU_LIST_H */
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