source: src/Common/Stats/Counter.h@ 675716e

//
// Cforall Version 1.0.0 Copyright (C) 2019 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// Counter.h --
//
// Author           : Thierry Delisle
// Created On       : Thu Feb 28 12::05:10 2019
// Last Modified By :
// Last Modified On :
// Update Count     :
//

#pragma once

#include <cstdint>
#include <iostream>
#include <string>

#include "Common/Stats/Base.h"

namespace Stats {
        namespace Counters {
                void print();

                extern Base::TreeImpl::Top top;

                class CounterGroup : public Base::Tree<top> {
                public:
                        CounterGroup(const std::string & name ) : Base::Tree<top>(name) {}
                        CounterGroup(const std::string & name, Base::Tree<top> * parent) : Base::Tree<top>(name, parent) {}

                        virtual void print(std::ostream & os) override { os << ""; }
                protected:
                        virtual ~CounterGroup() = default;
                };

                class SimpleCounter : public Base::Tree<top> {
                public:
                        SimpleCounter(const std::string & name ) : Base::Tree<top>(name) {}
                        SimpleCounter(const std::string & name, Base::Tree<top> * parent) : Base::Tree<top>(name, parent) {}

                        virtual void print(std::ostream & os) override { os << count; }

                        inline void operator++(int)          { count++;        }
                        inline void operator+=(size_t value) { count += value; }
                protected:
                        virtual ~SimpleCounter() = default;

                private:
                        size_t count = 0;
                };

                template<typename T>
                class AverageCounter : public Base::Tree<top> {
                public:
                        AverageCounter(const std::string & name ) : Base::Tree<top>(name), sum{} {}
                        AverageCounter(const std::string & name, Base::Tree<top> * parent) : Base::Tree<top>(name, parent), sum{} {}

                        virtual void print(std::ostream & os) { os << sum / count; }

                        inline void push(T value) {
                                sum += value;
                                count++;
                        }

                protected:
                        virtual ~AverageCounter() = default;

                private:
                        T sum;
                        size_t count = 1;
                };

                template<typename T>
                class MaxCounter : public Base::Tree<top> {
                public:
                        MaxCounter(const std::string & name ) : Base::Tree<top>(name), max{} {}
                        MaxCounter(const std::string & name, Base::Tree<top> * parent) : Base::Tree<top>(name, parent), max{} {}

                        virtual void print(std::ostream & os) { os << max; }

                        inline void push(T value) { max = std::max(max, value); }
                protected:
                        virtual ~MaxCounter() = default;

                private:
                        T max;
                };
        }
}