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GG-49287 Bulk decode of primitive arrays (vectorized float-vector deserialization) #78

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GG-49287 Bulk decode of primitive arrays (vectorized float-vector deserialization) #78

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7 changes: 6 additions & 1 deletion pygridgain/datatypes/primitive_arrays.py
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Original file line number Diff line number Diff line change
Expand Up @@ -185,7 +185,12 @@ def parse_not_null(cls, stream):

@classmethod
def to_python_not_null(cls, ctypes_object, **kwargs):
return [ctypes_object.data[i] for i in range(ctypes_object.length)]
# Bulk buffer decode instead of an element-wise Python list comprehension over the
# ctypes array (~the dominant client cost for large float vectors). Cast through bytes
# to the native element format (ctypes LittleEndianStructure reports e.g. '<f', which
# memoryview.tolist() rejects); correct on little-endian platforms.
mv = memoryview(ctypes_object.data)
return mv.cast('B').cast(mv.format.lstrip('<>=!@')).tolist()

@classmethod
def from_python_not_null(cls, stream, value, **kwargs):
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