Method impl

src/operations.cpp:716–723

copy_file implementation wrapper that preallocates storage for the target file before invoking the underlying copy implementation

{
    //! copy_file implementation wrapper that preallocates storage for the target file before invoking the underlying copy implementation
    static int impl(int infile, int outfile, uintmax_t size, std::size_t blksize)
    {
        int err = preallocate_storage(outfile, size);
        if (BOOST_UNLIKELY(err != 0))
            return err;

        return CopyFileData::impl(infile, outfile, size, blksize);
    }
};

// Min and max buffer sizes are selected to minimize the overhead from system calls.