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msgctl

Perl 5 version 10.1 documentation
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msgctl

  • msgctl ID,CMD,ARG

    Calls the System V IPC function msgctl(2). 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 msqid_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, IPC::SysV , and IPC::Semaphore documentation.