Perl 5 version 10.1 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: the undefined value for error, "0 but true" for zero, or the actual return value otherwise. See also "SysV IPC" in perlipc and IPC::SysV documentation.


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