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NAME

       PerlIO::mmap - Memory mapped IO

SYNOPSIS

        open my $fh, '<:mmap', $filename;

DESCRIPTION

       This layer does "read" and "write" operations by mmap()ing the file if possible, but falls
       back to the default behavior if not.

IMPLEMENTATION NOTE

       "PerlIO::mmap" only exists to use XSLoader to load C code that provides support for using
       memory mapped IO. One does not need to explicitly "use PerlIO::mmap;".