PerlIO::mmap - phpMan

PerlIO::mmap(3pm)      Perl Programmers Reference Guide      PerlIO::mmap(3pm)
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;".
perl v5.26.3                      2018-03-01                 PerlIO::mmap(3pm)