diff options
author | Danny Holman <dholman@gymli.org> | 2023-11-26 18:52:57 -0600 |
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committer | Danny Holman <dholman@gymli.org> | 2023-11-26 18:52:57 -0600 |
commit | 9c3e0a9de7c57bf3435f07e6f2decb2f0e317776 (patch) | |
tree | 97d85efc41cdf0c218b139eb8b85405498f7431c /include | |
parent | 6b399c882d7d6b8a548f8739ef35bc11e576a47a (diff) |
kernel: list: add a linked-list implementation
Add a linked-list implementation using the kmalloc system.
Signed-off-by: Danny Holman <dholman@gymli.org>
Diffstat (limited to 'include')
-rw-r--r-- | include/kernel/list.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/kernel/list.h b/include/kernel/list.h new file mode 100644 index 0000000..cc78a4f --- /dev/null +++ b/include/kernel/list.h @@ -0,0 +1,31 @@ +#ifndef LIST_H +#define LIST_H + +#include <stddef.h> + +struct list_head { + struct list_head *next; + struct list_head *prev; +}; + +static inline void list_add(struct list_head *new, struct list_head *head) { + new->prev = head; + new->next = head->next; + + head->next = new; + if (head->prev != NULL) + head->prev->next = new; +} + +static inline void list_del(struct list_head *item) { + struct list_head *next = item->next; + struct list_head *prev = item->prev; + if (next != NULL) + next->prev = prev; + if (prev != NULL) + prev->next = next; + item->next = NULL; + item->prev = NULL; +} + +#endif |