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fork and two separate processes
Interprocess Communication example from a Well House Consultants training course
More on Interprocess Communication [link] Source code: knife Module: P223
print ("forking stuff\n"); $mumnum = $$; # The parent identifies its own process ID from the $$ variable # and the process ID of the child from the value returned by the fork call # The child identifies its own process ID from the $$ variable after the fork # and the process ID of the parent by having it stored before the fork if (($newid = fork()) == 0 ) { print "Hello - kiddo here. Mummsy is numbered $mumnum and I am $$!\n"; sleep 8; print "tee hee - still wunning!\n"; } else { print "Hello - This is Mummsy $$. My child is called $newid!\n"; sleep 2; } print ("Process no. $$ completed\n"); __END__ wizard:pl graham$ perl knife forking stuff Hello - This is Mummsy 330. My child is called 331! Hello - kiddo here. Mummsy is numbered 330 and I am 331! Process no. 330 completed wizard:pl graham$ Learn about this subject
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This example comes from our "Interprocess Communication" training module. You'll find a description of the topic and some
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