Your mytest routine will run concurrently, but you have a race condition. You should pass the value of $j into the thread at thread creation time instead of accessing a global variable. As your threads run, there is a chance that two threads will try to use the same value in $j to move a file. Also, there is little sense in using threads for IO operations, as IO operations that use the full bandwidth of the bus available seldom benefit from parallelization.

In reply to Re: Did I create a concurrent program? by Corion
in thread Did I create a concurrent program? by jweden1

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