cleanup.h

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#ifndef CLEANUP_H_
#define CLEANUP_H_
 
#include "mythmetaexp.h"
 
class META_PUBLIC CleanupProc
{
  public:
    virtual void doClean() = 0;
    virtual ~CleanupProc() = default;
};
 
class META_PUBLIC CleanupHooks
{
  public:
    static CleanupHooks *getInstance();
 
  public:
    void addHook(CleanupProc *clean_proc);
    void removeHook(CleanupProc *clean_proc);
    void cleanup();
 
  private:
    CleanupHooks();
    ~CleanupHooks();
    class CleanupHooksImp *m_imp {nullptr};
};
 
template <typename T>
class META_PUBLIC SimpleCleanup : public CleanupProc
{
  public:
    explicit SimpleCleanup(T *inst) : m_inst(inst)
    {
        CleanupHooks::getInstance()->addHook(this);
    }
 
    ~SimpleCleanup() override
    {
        CleanupHooks::getInstance()->removeHook(this);
    }
 
    void doClean() override // CleanupProc
    {
        m_inst->cleanup();
    }
 
  private:
    T *m_inst {nullptr};
};
 
#endif // CLEANUP_H_