folly/stats/Histogram.cpp

   1 /*
   2  * Copyright 2017 Facebook, Inc.
   3  *
   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
   7  *
   8  *   http://www.apache.org/licenses/LICENSE-2.0
   9  *
  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.
  15  */
  16
  17 /*
  18  * This file contains explicit instantiations of stats template types.
  19  *
  20  * This allows most users to avoid having to include the template definition
  21  * header files.
  22  */
  23
  24 #include <folly/stats/Histogram.h>
  25 #include <folly/stats/Histogram-defs.h>
  26
  27 namespace folly {
  28
  29 template class Histogram<int64_t>;
  30 template class detail::HistogramBuckets<int64_t, Histogram<int64_t>::Bucket>;
  31
  32 // Histogram::getPercentileBucketIdx(), Histogram::getPercentileEstimate()
  33 // and Histogram::computeTotalCount()
  34 // are implemented using template methods.  Instantiate the default versions of
  35 // these methods too, so anyone using them won't also need to explicitly
  36 // include Histogram-defs.h
  37 template size_t detail::HistogramBuckets<int64_t, Histogram<int64_t>::Bucket>::
  38     getPercentileBucketIdx<Histogram<int64_t>::CountFromBucket>(
  39         double pct,
  40         Histogram<int64_t>::CountFromBucket countFromBucket,
  41         double* lowPct,
  42         double* highPct) const;
  43 template int64_t detail::HistogramBuckets<int64_t, Histogram<int64_t>::Bucket>
  44   ::getPercentileEstimate<Histogram<int64_t>::CountFromBucket,
  45                           Histogram<int64_t>::AvgFromBucket>(
  46     double pct,
  47     Histogram<int64_t>::CountFromBucket countFromBucket,
  48     Histogram<int64_t>::AvgFromBucket avgFromBucket) const;
  49 template uint64_t detail::HistogramBuckets<int64_t, Histogram<int64_t>::Bucket>
  50   ::computeTotalCount<Histogram<int64_t>::CountFromBucket>(
  51     Histogram<int64_t>::CountFromBucket countFromBucket) const;
  52
  53 } // folly