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| author | Antonio Borneo <borneo.antonio@gmail.com> | 2021-12-16 11:25:32 +0100 |
|---|---|---|
| committer | Antonio Borneo <borneo.antonio@gmail.com> | 2022-02-14 15:10:41 +0000 |
| commit | a11fe473eaee235a51dba7900c08cc7629ed2794 (patch) | |
| tree | 8fd8a5e4bbbc440db9d4935d38238c96367bf05b /src/helper | |
| parent | 16cc853bcfbcc8dba6eadd91b434c05387034c0a (diff) | |
| download | riscv-openocd-a11fe473eaee235a51dba7900c08cc7629ed2794.zip riscv-openocd-a11fe473eaee235a51dba7900c08cc7629ed2794.tar.gz riscv-openocd-a11fe473eaee235a51dba7900c08cc7629ed2794.tar.bz2 | |
helper/list: add list_for_each_entry_direction()
Use a bool flag to specify if the list should be forward or
backward iterated.
Change-Id: Ied19d049f46cdcb7f50137d459cc7c02014526bc
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6784
Tested-by: jenkins
Diffstat (limited to 'src/helper')
| -rw-r--r-- | src/helper/list.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/helper/list.h b/src/helper/list.h index a7cd4ad..552a320 100644 --- a/src/helper/list.h +++ b/src/helper/list.h @@ -657,6 +657,20 @@ static inline void list_splice_tail_init(struct list_head *list, pos = list_prev_entry(pos, member)) /** + * list_for_each_entry_direction - iterate forward/backward over list of given type + * @param forward the iterate direction, true for forward, false for backward. + * @param pos the type * to use as a loop cursor. + * @param head the head for your list. + * @param member the name of the list_head within the struct. + */ +#define list_for_each_entry_direction(forward, pos, head, member) \ + for (pos = forward ? list_first_entry(head, typeof(*pos), member) \ + : list_last_entry(head, typeof(*pos), member); \ + !list_entry_is_head(pos, head, member); \ + pos = forward ? list_next_entry(pos, member) \ + : list_prev_entry(pos, member)) + +/** * list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue() * @param pos the type * to use as a start point * @param head the head of the list |