You are viewing the version of this documentation from Perl blead. This is the main development branch of Perl. (git commit cf7cc0a627da2ab1c0e64ac5a77bd2ca9c1a4e52)
semget KEY,NSEMS,FLAGS

Calls the System V IPC function semget(2). Returns the semaphore id, or the undefined value on error. See also "SysV IPC" in perlipc and the documentation for IPC::SysV and IPC::Semaphore.

Portability issues: "semget" in perlport.