//*****************************************************************************
// Copyright 2017-2020 Intel Corporation
//
// 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.
//*****************************************************************************

#pragma once

#include <iostream>
#include <limits>
#include <list>

#include "ngraph/pass/pass.hpp"

namespace ngraph
{
    namespace pass
    {
        class MemoryVisualize;
    }
}

class NGRAPH_API ngraph::pass::MemoryVisualize : public ModulePass
{
public:
    MemoryVisualize(const std::string& filename);
    virtual bool run_on_module(std::vector<std::shared_ptr<ngraph::Function>>&) override;

private:
    std::unordered_set<const descriptor::Tensor*>
        find_largest_op(const std::list<std::shared_ptr<Node>>& nodes);
    void draw_tensor_weight(std::ostream& file, const std::list<std::shared_ptr<Node>>& nodes);
    void draw_histogram(std::ostream& file, const std::list<std::shared_ptr<Node>>& nodes);
    void draw_op_influence(std::ostream& file, const std::list<std::shared_ptr<Node>>& nodes);
    int compute_op_weight(std::shared_ptr<Node> exop);

    static size_t memory_usage(std::shared_ptr<Node>);
    static size_t memory_footprint(std::shared_ptr<Node>);
    static size_t memory_footprint(const std::list<std::shared_ptr<Node>>&);

    const std::string m_filename;
};
