diff options
Diffstat (limited to 'src/vppinfra/llist.h')
| -rw-r--r-- | src/vppinfra/llist.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/vppinfra/llist.h b/src/vppinfra/llist.h index d521a725fc3..25fb95ff66e 100644 --- a/src/vppinfra/llist.h +++ b/src/vppinfra/llist.h @@ -52,6 +52,22 @@ typedef struct clib_llist_anchor */ #define clib_llist_entry_index(LP,E) ((E) - (LP)) /** + * Get prev list entry index + * + * @param E pool entry + * @name list anchor name + * @return previous index + */ +#define clib_llist_prev_index(E,name) _lprev(E,name) +/** + * Get next list entry index + * + * @param E pool entry + * @name list anchor name + * @return next index + */ +#define clib_llist_next_index(E,name) _lnext(E,name) +/** * Get next pool entry * * @param LP linked list pool @@ -248,6 +264,28 @@ do { \ } \ } while (0) /** + * Walk list starting at head safe + * + * @param LP linked list pool + * @param name list anchor name + * @param HI head index + * @param EI entry index iterator + * @param body code to be executed + */ +#define clib_llist_foreach_safe(LP,name,H,E,body) \ +do { \ + clib_llist_index_t _ll_var (HI) = clib_llist_entry_index (LP, H); \ + clib_llist_index_t _ll_var (EI), _ll_var (NI); \ + _ll_var (EI) = _lnext ((H),name); \ + while (_ll_var (EI) != _ll_var (HI)) \ + { \ + (E) = pool_elt_at_index (LP, _ll_var (EI)); \ + _ll_var (NI) = _lnext ((E),name); \ + do { body; } while (0); \ + _ll_var (EI) = _ll_var (NI); \ + } \ +} while (0) +/** * Walk list starting at head in reverse order * * @param LP linked list pool |