From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Arijit Das Sent: 24 August 2005 16:42 To: [email protected]; [email protected] Subject: Sharing Variables among Processes... Its about sharing a Perl Variable among parent and child processes. Do you know of any design pattern or technique by which this can be achieved? What I want is this... $shared_var = 10; if ($pid = fork) { sleep 10; print "$shared_var\n"; # Should show the child's changes... } elsif (defined $pid) { $shared_var = 12; exit 0; } I want the change in the shared variable to be reflected to the parent process immediately...basically, same variable in memory should be changed. In general, you can't share Perl variables between multiple processes. There are mechanisms for sharing data between process using IPC (inter process communication) which include platform dependent features like shared memory or memory mapped files (you don't say which platform you are using), or more general techniques like sockets.
You can share Perl variables between threads, however, if your Perl is built with thread support. You don't say what you are trying to accomplish. Why do you think that you need to share a Perl variable between 2 processes? HTH -- Brian Raven ----------------------------------------------------------------------- The information contained in this e-mail is confidential and solely for the intended addressee(s). Unauthorised reproduction, disclosure, modification, and/or distribution of this email may be unlawful. If you have received this email in error, please notify the sender immediately and delete it from your system. The views expressed in this message do not necessarily reflect those of LIFFE Holdings Plc or any of its subsidiary companies. ----------------------------------------------------------------------- _______________________________________________ ActivePerl mailing list [email protected] To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
