comparison data/fft/FFTDataServer.h @ 548:1469caaa8e67

* Finer locking in fft caches; fix displayed bin ranges in spectrogram

     };
 
     typedef std::vector<CacheBlock *> CacheVector;
     CacheVector m_caches;
     QReadWriteLock m_cacheVectorLock; // locks cache lookup, not use
+    QMutex m_cacheCreationMutex; // solely to serialise makeCache() calls
 
     FFTCacheReader *getCacheReader(size_t x, size_t &col) {
         Profiler profiler("FFTDataServer::getCacheReader");
         col = x & m_cacheWidthMask;
         int c = x >> m_cacheWidthPower;

         return getCacheWriter(x, col);
     }
 
     bool haveCache(size_t x) {
         int c = x >> m_cacheWidthPower;
-        return (m_caches[c] != 0);
+        return (m_caches.at(c) != 0);
     }
     
     bool makeCache(int c);
     bool makeCacheReader(int c);