ecvSingleton.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
template <class T>
struct ecvSingleton {
    ecvSingleton() : instance(nullptr) {}
    ~ecvSingleton() { release(); }
    inline void release() {
        if (instance) {
            delete instance;
            instance = nullptr;
        }
    }
 
    T* instance;
};