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  1. Apache Arrow
  2. ARROW-3662

[C++] Add a const overload to MemoryMappedFile::GetSize

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    • New Feature
    • Status: Resolved
    • Minor
    • Resolution: Fixed
    • 0.11.1
    • 0.12.0
    • C++

    Description

       

      While GetSize in general is not a const function, it can be on a MemoryMappedFile. I propose to add a const override directly to the MemoryMappedFile.

      Alternatively we could add a const version on the RandomAccessFile level which would fail, if a const size getting (e.g. without a seek) isn't possible, but it seems to me to be a potential source of hard-to-debug bugs and spurious failures. At would at least require a careful analysis of the platform support of different size getting options.

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              alendit Dimitri Vorona
              alendit Dimitri Vorona
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