Method decreaseRef

rtgui/thumbnail.cc:789–803

}

void Thumbnail::decreaseRef ()
{
    {
        MyMutex::MyLock lock(mutex);

        if ( ref == 0 ) {
            return;
        }

        if ( --ref != 0 ) {
            return;
        }
    }
    cachemgr->closeThumbnail (this);
}

void Thumbnail::getThumbnailSize(int &w, int &h, const rtengine::procparams::ProcParams *pparams)
{