c++ 单例对象的释放

来源：互联网发布：linux监控软件对比编辑：程序博客网时间：2024/04/28 13:56

class ark_StageDataTable
{
public:
static ark_StageDataTable* instance();

virtual ~ark_StageDataTable();

};

class ark_releaseDataTable
{
public:
virtual ~ark_releaseDataTable();
};

static ark_releaseDataTable s;
static ark_StageDataTable *_instans_stageDataTable = NULL;

ark_releaseDataTable::~ark_releaseDataTable()
{
   if(_instans_stageDataTable)
   {
       delete _instans_stageDataTable;
   }
}
ark_StageDataTable::ark_StageDataTable()
{

}
ark_StageDataTable::~ark_StageDataTable()
{
}
ark_StageDataTable* ark_StageDataTable::instance()
{
   if(!_instans_stageDataTable)
   {
       _instans_stageDataTable = new ark_StageDataTable();
       _instans_stageDataTable->_ark_DecodeCSV();
       //_instans_stageDataTable->_ark_DecodeWelcome();
       return _instans_stageDataTable;
   }
   return _instans_stageDataTable;
}

当程序退出时，ark_releaseDataTable类的s对象析构会调用其析构函数，从而把单例给释放了

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