diff options
Diffstat (limited to 'src/vlib/counter.c')
| -rw-r--r-- | src/vlib/counter.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/vlib/counter.c b/src/vlib/counter.c index 558bbe0e990..c134229b751 100644 --- a/src/vlib/counter.c +++ b/src/vlib/counter.c @@ -119,6 +119,44 @@ vlib_validate_combined_counter (vlib_combined_counter_main_t * cm, u32 index) 3 /*STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED */ ); } +int + vlib_validate_combined_counter_will_expand + (vlib_combined_counter_main_t * cm, u32 index) +{ + vlib_thread_main_t *tm = vlib_get_thread_main (); + int i; + void *oldheap = vlib_stats_push_heap (cm->counters); + + /* Possibly once in recorded history */ + if (PREDICT_FALSE (vec_len (cm->counters) == 0)) + { + vlib_stats_pop_heap (cm, oldheap, index, + 3 /*STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED */ ); + return 1; + } + + for (i = 0; i < tm->n_vlib_mains; i++) + { + /* Trivially OK, and proves that index >= vec_len(...) */ + if (index < vec_len (cm->counters[i])) + continue; + if (_vec_resize_will_expand + (cm->counters[i], + index - vec_len (cm->counters[i]) /* length_increment */ , + sizeof (cm->counters[i]) /* data_bytes */ , + 0 /* header_bytes */ , + CLIB_CACHE_LINE_BYTES /* data_alignment */ )) + { + vlib_stats_pop_heap (cm, oldheap, index, + 3 /*STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED */ ); + return 1; + } + } + vlib_stats_pop_heap (cm, oldheap, index, + 3 /*STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED */ ); + return 0; +} + void vlib_free_combined_counter (vlib_combined_counter_main_t * cm) { |