diff options
Diffstat (limited to 'libbcachefs/util.h')
| -rw-r--r-- | libbcachefs/util.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/libbcachefs/util.h b/libbcachefs/util.h index b91b2dc8..a251bf9c 100644 --- a/libbcachefs/util.h +++ b/libbcachefs/util.h @@ -789,4 +789,28 @@ void sort_cmp_size(void *base, size_t num, size_t size, int (*cmp_func)(const void *, const void *, size_t), void (*swap_func)(void *, void *, size_t)); +/* just the memmove, doesn't update @_nr */ +#define __array_insert_item(_array, _nr, _pos) \ + memmove(&(_array)[(_pos) + 1], \ + &(_array)[(_pos)], \ + sizeof((_array)[0]) * ((_nr) - (_pos))) + +#define array_insert_item(_array, _nr, _pos, _new_item) \ +do { \ + __array_insert_item(_array, _nr, _pos); \ + (_nr)++; \ + (_array)[(_pos)] = (_new_item); \ +} while (0) + +#define array_remove_items(_array, _nr, _pos, _nr_to_remove) \ +do { \ + (_nr) -= (_nr_to_remove); \ + memmove(&(_array)[(_pos)], \ + &(_array)[(_pos) + (_nr_to_remove)], \ + sizeof((_array)[0]) * ((_nr) - (_pos))); \ +} while (0) + +#define array_remove_item(_array, _nr, _pos) \ + array_remove_items(_array, _nr, _pos, 1) + #endif /* _BCACHEFS_UTIL_H */ |