Memory-mapped file tuning.

modules/juce_core/native/juce_posix_SharedCode.h

@@ -567,9 +567,14 @@ void MemoryMappedFile::openInternal (const File& file, AccessMode mode)
                         (off_t) range.getStart());
 
         if (m != MAP_FAILED)
+        {
             address = m;
+            madvise (m, (size_t) range.getLength(), MADV_SEQUENTIAL);
+        }
         else
+        {
             range = Range<int64>();
+        }
     }
 }
 

modules/juce_core/native/juce_win32_Files.cpp

@@ -334,7 +334,7 @@ void MemoryMappedFile::openInternal (const File& file, AccessMode mode)
     }
 
     HANDLE h = CreateFile (file.getFullPathName().toWideCharPointer(), accessMode, FILE_SHARE_READ, 0,
-                           createType, FILE_ATTRIBUTE_NORMAL, 0);
+                           createType, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, 0);
 
     if (h != INVALID_HANDLE_VALUE)
     {