Hi x-lours, Thanks for this suggestion. However, isn't the use semaphore is more towards synchronization of threads (or processes)? I am using Thread::Queue to sync and communicate between threads. And, so synchronization and communication is not an issue. My main worry is about this behavior referred on this page: "It means that every time you start a thread all data structures are copied to the new thread. And when I say all, I mean all. This e.g. includes package stashes, global variables, lexicals in scope. Everything!" Thanks

In reply to Re^2: Avoiding data copying in threads by ganeshPerlStarter
in thread Avoiding data copying in threads by ganeshPerlStarter

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