comparison data/fft/FFTDataServer.h @ 215:a051929fef3b

* Attempt to improve management of FFT models that are not currently in use.
  I think these are some problems with this at the moment.

 
 #include <vector>
 #include <deque>
 
 class DenseTimeValueModel;
+class Model;
 class FFTCache;
 
 class FFTDataServer
 {
 public:

                                            size_t fillFromColumn = 0);
 
     static void claimInstance(FFTDataServer *);
     static void releaseInstance(FFTDataServer *);
 
+    static void modelAboutToBeDeleted(Model *);
+
     const DenseTimeValueModel *getModel() const { return m_model; }
     int        getChannel() const { return m_channel; }
     WindowType getWindowType() const { return m_windower.getType(); }
     size_t     getWindowSize() const { return m_windowSize; }
     size_t     getWindowIncrement() const { return m_windowIncrement; }

                                         size_t fftSize,
                                         bool polar);
 
     typedef std::pair<FFTDataServer *, int> ServerCountPair;
     typedef std::map<QString, ServerCountPair> ServerMap;
+    typedef std::deque<FFTDataServer *> ServerQueue;
 
     static ServerMap m_servers;
+    static ServerQueue m_releasedServers; // these are still in m_servers as well, with zero refcount
     static QMutex m_serverMapMutex;
     static FFTDataServer *findServer(QString); // call with serverMapMutex held
     static void purgeLimbo(int maxSize = 3); // call with serverMapMutex held
 };