lib/phash/image.rb in pHash-1.0.0 vs lib/phash/image.rb in pHash-1.0.1

@@ -7,16 +7,16 @@
   # param hash of type ulong64 (must be 64-bit variable)
   # return int value - -1 for failure, 1 for success
   #
   # int ph_dct_imagehash(const char* file, ulong64 &hash);
   #
-  attach_function :ph_dct_imagehash, [:string, :pointer], :int
+  attach_function :ph_dct_imagehash, [:string, :pointer], :int, :blocking => true
 
   # no info in pHash.h
   #
   # int ph_hamming_distance(const ulong64 hash1,const ulong64 hash2);
   #
-  attach_function :ph_hamming_distance, [:uint64, :uint64], :int
+  attach_function :ph_hamming_distance, [:uint64, :uint64], :int, :blocking => true
 
   class << self
     # Get image file hash using <tt>ph_dct_imagehash</tt>
     def image_hash(path)
       hash_p = FFI::MemoryPointer.new :ulong_long