February 2012
Intermediate to advanced
1184 pages
37h 17m
English
Content preview from Programming Perl, 4th Editionsemget
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semget 
semgetKEY,NSEMS,FLAGS
This function calls the System V IPC syscall
semget(2). Before calling, you should use IPC::SysV to get the correct constant definitions. The function
returns the semaphore ID, or undef if
there is an error.
See also the IPC::Semaphore module. This function is available only on machines
supporting System V IPC.’
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.