Garbage.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
// STL
#include <unordered_set>
 
template <typename C>
class Garbage {
public:
    inline void add(C* item) {
        try {
            m_items.insert(item);
        } catch (const std::bad_alloc&) {
            // what can we do?!
        }
    }
 
 
    inline void remove(C* item) { m_items.erase(item); }
 
    inline void destroy(C* item) {
        m_items.erase(item);
        delete item;
    }
 
 
    ~Garbage() {
        // dispose of left over
        for (auto it = m_items.begin(); it != m_items.end(); ++it) delete *it;
        m_items.clear();
    }
 
    std::unordered_set<C*> m_items;
};