PerlIO::mmap

Section: Perl Programmers Reference Guide (3pm)
Updated: 2021-03-31
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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;".