SysV IPC message control operations

Daftar Isi

• msgctl ID,CMD,ARG

  Calls the System V IPC function msgctl(2). You'll probably have to say

   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_dsstructure. Returns like ioctl: the undefined value for error,"0 but true" for zero, or the actual return value otherwise. See alsoSysV IPC in perlipc and the documentation for IPC::SysV andIPC::Semaphore.

  Portability issues: msgctl in perlport.