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