Perl 5 version 12.1 documentation
shmctl
- shmctl ID,CMD,ARG
Calls the System V IPC function shmctl. 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 returnedshmid_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 andIPC::SysV
documentation.