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Asked: 2026-05-23T09:23:54+00:00

I’m implementing a parallel, performance-critical algorithm with multiple threads. I assign all threads some

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I’m implementing a parallel, performance-critical algorithm with multiple threads. I assign all threads some data to work on. When all those threads have finished to work on their data, I assign all threads new data, and the cycle continues. (This is what I refer to as thread “clocking” since it’s somewhat similar to CPU clocking.)

What I came up with so far is using a master thread that stores an integer. At the beginning of each cycle, I set the integer to the number of slave threads. When a slave thread is done, it decrements the master thread’s integer. Once that integer reaches zero, I start a new cycle.

Is this a good approach, or are there more efficient ways of doing the same thing?

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1 Answer

  1. Editorial Team

    You’d be better off using a Phaser (if you have Java 7), or CyclicBarrier for Java 5+.

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