2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vnet/util/refcount.h>
18 void __vlib_refcount_resize(vlib_refcount_per_cpu_t *per_cpu, u32 size)
20 u32 *new_counter = 0, *old_counter;
21 vec_validate(new_counter, size);
22 vlib_refcount_lock(per_cpu->counter_lock);
23 memcpy(new_counter, per_cpu->counters, vec_len(per_cpu->counters)*4);
24 old_counter = per_cpu->counters;
25 per_cpu->counters = new_counter;
26 vlib_refcount_unlock(per_cpu->counter_lock);
27 CLIB_MEMORY_BARRIER();
28 vec_free(old_counter);
31 u64 vlib_refcount_get(vlib_refcount_t *r, u32 index)
34 vlib_thread_main_t *tm = vlib_get_thread_main ();
36 for (thread_index = 0; thread_index < tm->n_vlib_mains; thread_index++) {
37 vlib_refcount_lock(r->per_cpu[thread_index].counter_lock);
38 if (index < vec_len(r->per_cpu[thread_index].counters))
40 count += r->per_cpu[thread_index].counters[index];
42 vlib_refcount_unlock(r->per_cpu[thread_index].counter_lock);