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IPC::SysV

Perl 5 version 10.0 documentation
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IPC::SysV

NAME

IPC::SysV - SysV IPC constants

SYNOPSIS

  1. use IPC::SysV qw(IPC_STAT IPC_PRIVATE);

DESCRIPTION

IPC::SysV defines and conditionally exports all the constants defined in your system include files which are needed by the SysV IPC calls. Common ones include

  1. IPC_CREATE IPC_EXCL IPC_NOWAIT IPC_PRIVATE IPC_RMID IPC_SET IPC_STAT
  2. GETVAL SETVAL GETPID GETNCNT GETZCNT GETALL SETALL
  3. SEM_A SEM_R SEM_UNDO
  4. SHM_RDONLY SHM_RND SHMLBA

and auxiliary ones

  1. S_IRUSR S_IWUSR S_IRWXU
  2. S_IRGRP S_IWGRP S_IRWXG
  3. S_IROTH S_IWOTH S_IRWXO

but your system might have more.

  • ftok( PATH, ID )

    Return a key based on PATH and ID, which can be used as a key for msgget, semget and shmget. See ftok

SEE ALSO

IPC::Msg, IPC::Semaphore, ftok

AUTHORS

Graham Barr <gbarr@pobox.com> Jarkko Hietaniemi <jhi@iki.fi>

COPYRIGHT

Copyright (c) 1997 Graham Barr. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.