CVShareable.cpp

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#include "CVShareable.h"
 
#ifdef CV_TRACK_ALIVE_SHARED_OBJECTS
 
#ifdef _MSC_VER
// To get rid of the really annoying warnings about template class exportation
#pragma warning(disable : 4530)
#endif
 
// system
#include <vector>
 
// set of all currently 'alived' shared objects
static std::vector<CCShareable*> s_aliveSharedObjects;
 
unsigned CCShareable::GetAliveCount() { return s_aliveSharedObjects.size(); }
 
#endif
 
CCShareable::CCShareable() : m_linkCount(0) {
#ifdef CV_TRACK_ALIVE_SHARED_OBJECTS
    s_aliveSharedObjects.push_back(this);
#endif
}
 
void CCShareable::link() { ++m_linkCount; }
 
void CCShareable::release() {
    if (m_linkCount > 1)
        --m_linkCount;
    else
        delete this;
}
 
CCShareable::~CCShareable() {
#ifdef CV_TRACK_ALIVE_SHARED_OBJECTS
    std::vector<CCShareable*>::iterator it;
    for (it = s_aliveSharedObjects.begin(); it != s_aliveSharedObjects.end();
         ++it) {
        if (*it == this) {
            std::swap(*it, s_aliveSharedObjects.back());
            s_aliveSharedObjects.pop_back();
            return;
        }
    }
#endif
}