perl-Sys-Mmap: perl-Sys-Mmap (uses mmap to map in a file as a Perl variable) perl-Sys-Mmap: perl-Sys-Mmap: The mmap module uses the POSIX mmap call to map in a file as a Perl perl-Sys-Mmap: variable. Memory access by mmap may be shared between threads or perl-Sys-Mmap: forked processes, and may be a disc file that has been mapped into perl-Sys-Mmap: memory. perl-Sys-Mmap: perl-Sys-Mmap: perl-Sys-Mmap: perl-Sys-Mmap: perl-Sys-Mmap: