Perl 5 version 32.0 documentation


  • shmctl ID,CMD,ARG

    Calls the System V IPC function shmctl. You'll probably have to say

    1. use IPC::SysV;

    first to get the correct constant definitions. If CMD is IPC_STAT , then ARG must be a variable that will hold the returned shmid_ds structure. Returns like ioctl: undef for error; " but true" for zero; and the actual return value otherwise. See also SysV IPC in perlipc and the documentation for IPC::SysV .

    Portability issues: shmctl in perlport.