I a perl code have seen the REAPER has used as a signal handler for SIGCHLD signal .
$SIG{CHLD} = \&REAPER;
The function also not defined in the code . Can any one deeply explain the internal operation on the `REAPER` .
Thanks in advance.
views:
122answers:
2
+2
A:
Read : PerlIPC-Perl interprocess communication (signals, fifos, pipes, safe subprocesses, sockets, and semaphores).
Read: "Reaping Zombies" from Chapter 16.01 in "Perl Programming third Edition" by Larry Wall
Nikhil Jain
2010-08-27 07:50:04
That just shows how to write your own `REAPER` but the OP complains it isn't written in his code.
Philip Potter
2010-08-27 07:55:13
@Karthi: Both links will help you to understand how it is working. It might be possible it is used for Zombies but for that case also REAPER function should be there.
Nikhil Jain
2010-08-27 08:18:46
@Philip Potter: if it is not written, the code won't work.
Grrrr
2010-08-27 08:48:33
That's true. Thanks:)
Nikhil Jain
2010-08-27 08:58:45
@Nikhil - please do not link to pirated copies of books (your second link)
DVK
2010-08-27 10:46:08
@DVK: ok, will not do next time, thanks for telling me.
Nikhil Jain
2010-08-27 10:50:48
I never realised that was a pirate site. naively I'd just assumed it was something to do with O'Reilly!
Martin Smith
2010-08-27 11:02:15
@Martin - `.ua` = O'Ukraine.
DVK
2010-08-27 11:09:43
@Martin Smith: Exactly, I also never realised it.
Nikhil Jain
2010-08-27 11:13:42
+2
A:
All Our perls have run
Here but now they're hung
Children don't fear the reaper
Nor Do the wind, the sun or the rain
We can be like they are
Come on process, Don't fear the Reaper
Baby take My file, Don't fear the Reaper
We'll be able to crash, Don't fear the Reaper
Baby it's your code
REAPER is just a placeholder name for code you have to write yourself. See perlipc for more details.
Eric Strom
2010-08-27 13:14:32