Cedric Roux
1b029be058
Introduce the function nr_rlc_activate_avg_time_to_tx() to activate/deactivate collection of avg time to tx stats (which may have an impact on realtime processing, so better not compute them when not needed). Fix a little bug in time_average_get_average() for when there is not stat.
137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include "time_stat.h"
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#include <time.h>
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#include <stdlib.h>
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#include <string.h>
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#include "common/utils/LOG/log.h"
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time_average_t *time_average_new(int duration, int initial_size)
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{
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time_average_t *ret;
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/* let's only accept power of two initial_size */
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if (initial_size & (initial_size - 1)) {
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LOG_E(UTIL, "time_average_new: illegal initial_size %d, use power of two\n", initial_size);
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exit(1);
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}
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ret = calloc(1, sizeof(time_average_t));
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if (ret == NULL) {
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LOG_E(UTIL, "out of memory\n");
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exit(1);
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}
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ret->duration = duration;
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ret->r.head = initial_size - 1;
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ret->r.maxsize = initial_size;
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ret->r.buffer = calloc(initial_size, sizeof(time_value_t));
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if (ret->r.buffer == NULL) {
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LOG_E(UTIL, "out of memory\n");
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exit(1);
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}
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return ret;
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}
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void time_average_free(time_average_t *t)
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{
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free(t->r.buffer);
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free(t);
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}
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void time_average_reset(time_average_t *t)
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{
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t->r.head = t->r.maxsize - 1;
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t->r.tail = 0;
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t->r.size = 0;
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t->accumulated_value = 0;
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}
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static void remove_old(time_average_t *t, uint64_t time)
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{
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/* remove old events */
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while (t->r.size && t->r.buffer[t->r.tail].time < time - t->duration) {
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t->accumulated_value -= t->r.buffer[t->r.tail].value;
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t->r.size--;
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t->r.tail++;
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t->r.tail %= t->r.maxsize;
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}
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}
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void time_average_add(time_average_t *t, uint64_t time, uint64_t value)
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{
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remove_old(t, time);
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if (t->r.size == t->r.maxsize) {
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t->r.maxsize *= 2;
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t->r.buffer = realloc(t->r.buffer, t->r.maxsize * sizeof(time_value_t));
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if (t->r.buffer == NULL) {
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LOG_E(UTIL, "out of memory\n");
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exit(1);
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}
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if (t->r.head < t->r.tail) {
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memcpy(&t->r.buffer[t->r.size], &t->r.buffer[0], (t->r.head + 1) * sizeof(time_value_t));
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t->r.head += t->r.size;
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}
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}
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t->r.head++;
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t->r.head %= t->r.maxsize;
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t->r.buffer[t->r.head].time = time;
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t->r.buffer[t->r.head].value = value;
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t->r.size++;
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t->accumulated_value += value;
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}
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double time_average_get_average(time_average_t *t, uint64_t time)
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{
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remove_old(t, time);
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if (t->r.size == 0)
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return 0;
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return (double)t->accumulated_value / t->r.size;
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}
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uint64_t time_average_now(void)
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{
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struct timespec t;
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uint64_t ret;
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if (clock_gettime(CLOCK_REALTIME, &t)) {
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LOG_E(UTIL, "clock_gettime failed\n");
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exit(1);
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}
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ret = (uint64_t)t.tv_sec * (uint64_t)1000000 + t.tv_nsec / 1000;
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/* round up if necessary */
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if (t.tv_nsec % 1000 >= 500)
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ret++;
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return ret;
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}
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