2 * Copyright 2013 Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef FOLLY_STATS_MULTILEVELTIMESERIES_DEFS_H_
18 #define FOLLY_STATS_MULTILEVELTIMESERIES_DEFS_H_
20 #include <glog/logging.h>
24 template <typename VT, typename TT>
25 MultiLevelTimeSeries<VT, TT>::MultiLevelTimeSeries(
28 const TimeType levelDurations[])
29 : numBuckets_(numBuckets),
33 CHECK_GT(numLevels, 0);
34 CHECK(levelDurations);
36 levels_.reserve(numLevels);
37 for (int i = 0; i < numLevels; ++i) {
38 if (levelDurations[i] == TT(0)) {
39 CHECK_EQ(i, numLevels - 1);
41 CHECK(levelDurations[i-1] < levelDurations[i]);
43 levels_.emplace_back(numBuckets, levelDurations[i]);
47 template <typename VT, typename TT>
48 void MultiLevelTimeSeries<VT, TT>::addValue(TimeType now,
49 const ValueType& val) {
50 addValueAggregated(now, val, 1);
53 template <typename VT, typename TT>
54 void MultiLevelTimeSeries<VT, TT>::addValue(TimeType now,
57 addValueAggregated(now, val * times, times);
60 template <typename VT, typename TT>
61 void MultiLevelTimeSeries<VT, TT>::addValueAggregated(TimeType now,
64 if (cachedTime_ != now) {
69 cachedCount_ += nsamples;
72 template <typename VT, typename TT>
73 void MultiLevelTimeSeries<VT, TT>::update(TimeType now) {
75 for (int i = 0; i < levels_.size(); ++i) {
76 levels_[i].update(now);
80 template <typename VT, typename TT>
81 void MultiLevelTimeSeries<VT, TT>::flush() {
82 // update all the underlying levels
83 if (cachedCount_ > 0) {
84 for (int i = 0; i < levels_.size(); ++i) {
85 levels_[i].addValueAggregated(cachedTime_, cachedSum_, cachedCount_);
92 template <typename VT, typename TT>
93 void MultiLevelTimeSeries<VT, TT>::clear() {
94 for (auto & level : levels_) {
98 cachedTime_ = TimeType(0);
105 #endif // FOLLY_STATS_MULTILEVELTIMESERIES_DEFS_H_