vclreferencebase.hxx

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#ifndef INCLUDED_VCL_Reference_HXX
#define INCLUDED_VCL_Reference_HXX

#include <vcl/dllapi.h>
#include <osl/interlck.h>

class VclBuilder;

class VCL_DLLPUBLIC VclReferenceBase
{
    mutable oslInterlockedCount mnRefCnt;

    template<typename T> friend class VclPtr;
    friend class ::VclBuilder; // needed by ::delete_by_window(vcl::Window *pWindow)

public:
    void acquire() const
    {
        osl_atomic_increment(&mnRefCnt);
    }

    void release() const
    {
        if (osl_atomic_decrement(&mnRefCnt) == 0)
            delete this;
    }
#ifdef DBG_UTIL
#ifndef _WIN32
    sal_Int32 getRefCount() const { return mnRefCnt; }
#endif
#endif


private:
    VclReferenceBase(const VclReferenceBase&) = delete;
    VclReferenceBase& operator=(const VclReferenceBase&) = delete;

    bool                        mbDisposed : 1;

protected:
                                VclReferenceBase();
    virtual                     ~VclReferenceBase();

    // This is only supposed to be called from disposeOnce
    virtual void                dispose();

public:
    // This is normally supposed to be called from VclPtr::disposeAndClear
    void                        disposeOnce();

    bool                        isDisposed() const { return mbDisposed; }

};
#endif