comparison data/fft/FFTDataServer.h @ 547:806e3c72b5df

* fix deadlock in fft memory cache usage

         col = x & m_cacheWidthMask;
         int c = x >> m_cacheWidthPower;
         m_cacheVectorLock.lockForRead();
         CacheBlock *cb(m_caches.at(c));
         if (cb) {
-            if (cb->memoryCache) return cb->memoryCache;
+            if (cb->memoryCache) {
+                m_cacheVectorLock.unlock();
+                return cb->memoryCache;
+            }
             if (cb->fileCacheWriter) {
                 QThread *me = QThread::currentThread();
                 CacheBlock::ThreadReaderMap &map = cb->fileCacheReader;
                 if (map.find(me) == map.end()) {
                     m_cacheVectorLock.unlock();