| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #ifndef ART_LIBARTBASE_BASE_STATS_H_ |
| #define ART_LIBARTBASE_BASE_STATS_H_ |
| |
| #include <unordered_map> |
| #include <string> |
| |
| #include "globals.h" |
| |
| namespace art { |
| |
| class VariableIndentationOutputStream; |
| |
| // Simple structure to record tree of statistical values. |
| class Stats { |
| public: |
| double Value() const { return value_; } |
| size_t Count() const { return count_; } |
| Stats& operator[](const char* name) { return children_[name]; } |
| const std::unordered_map<const char*, Stats>& Children() const { return children_; } |
| |
| void AddBytes(double bytes, size_t count = 1) { Add(bytes, count); } |
| void AddBits(double bits, size_t count = 1) { Add(bits / kBitsPerByte, count); } |
| void AddSeconds(double s, size_t count = 1) { Add(s, count); } |
| void AddNanoSeconds(double ns, size_t count = 1) { Add(ns / 1000000000.0, count); } |
| |
| double SumChildrenValues() const { |
| double sum = 0.0; |
| for (auto it : children_) { |
| sum += it.second.Value(); |
| } |
| return sum; |
| } |
| |
| inline void DumpSizes(VariableIndentationOutputStream& os, std::string_view name) const; |
| |
| private: |
| void Add(double value, size_t count = 1) { |
| value_ += value; |
| count_ += count; |
| } |
| |
| inline void Dump(VariableIndentationOutputStream& os, |
| std::string_view name, |
| double total, |
| double unit_size, |
| const char* unit) const; |
| |
| double value_ = 0.0; // Commutative sum of the collected statistic in basic units. |
| size_t count_ = 0; // The number of samples for this node. |
| std::unordered_map<const char*, Stats> children_; |
| }; |
| |
| } // namespace art |
| |
| #endif // ART_LIBARTBASE_BASE_STATS_H_ |