--- jsr166/src/test/loops/CancelledProducerConsumerLoops.java 2009/10/29 23:09:07 1.5 +++ jsr166/src/test/loops/CancelledProducerConsumerLoops.java 2016/12/31 19:16:42 1.17 @@ -1,12 +1,24 @@ /* * Written by Doug Lea with assistance from members of JCP JSR-166 * Expert Group and released to the public domain, as explained at - * http://creativecommons.org/licenses/publicdomain + * http://creativecommons.org/publicdomain/zero/1.0/ */ -import java.util.concurrent.*; + +import java.util.concurrent.BrokenBarrierException; +import java.util.concurrent.Callable; +import java.util.concurrent.CyclicBarrier; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.ArrayBlockingQueue; +import java.util.concurrent.BlockingQueue; +import java.util.concurrent.Future; +import java.util.concurrent.LinkedBlockingQueue; +import java.util.concurrent.LinkedTransferQueue; +import java.util.concurrent.SynchronousQueue; +import java.util.concurrent.TimeUnit; public class CancelledProducerConsumerLoops { - static final int CAPACITY = 100; + static final int CAPACITY = 100; static final long TIMEOUT = 100; static final ExecutorService pool = Executors.newCachedThreadPool(); @@ -26,19 +38,19 @@ public class CancelledProducerConsumerLo try { oneTest(i, iters); } - catch(BrokenBarrierException bb) { + catch (BrokenBarrierException bb) { // OK, ignore } Thread.sleep(100); } pool.shutdown(); - } + } static void oneRun(BlockingQueue q, int npairs, int iters) throws Exception { LoopHelpers.BarrierTimer timer = new LoopHelpers.BarrierTimer(); CyclicBarrier barrier = new CyclicBarrier(npairs * 2 + 1, timer); - Future[] prods = new Future[npairs]; - Future[] cons = new Future[npairs]; + Future[] prods = new Future[npairs]; + Future[] cons = new Future[npairs]; for (int i = 0; i < npairs; ++i) { prods[i] = pool.submit(new Producer(q, barrier, iters)); @@ -72,7 +84,7 @@ public class CancelledProducerConsumerLo long endTime = System.nanoTime(); long time = endTime - timer.startTime; if (print) { - double secs = (double)(time) / 1000000000.0; + double secs = (double) time / 1000000000.0; System.out.println("\t " + secs + "s run time"); } } @@ -87,12 +99,14 @@ public class CancelledProducerConsumerLo System.out.print("LinkedBlockingQueue "); oneRun(new LinkedBlockingQueue(CAPACITY), pairs, iters); + if (print) + System.out.print("LinkedTransferQueue "); + oneRun(new LinkedTransferQueue(), pairs, iters); if (print) System.out.print("SynchronousQueue "); oneRun(new SynchronousQueue(), pairs, iters / 8); - if (print) System.out.print("SynchronousQueue(fair) "); oneRun(new SynchronousQueue(true), pairs, iters / 8); @@ -104,11 +118,11 @@ public class CancelledProducerConsumerLo */ } - static abstract class Stage implements Callable { + abstract static class Stage implements Callable { final BlockingQueue queue; final CyclicBarrier barrier; final int iters; - Stage (BlockingQueue q, CyclicBarrier b, int iters) { + Stage(BlockingQueue q, CyclicBarrier b, int iters) { queue = q; barrier = b; this.iters = iters; @@ -153,6 +167,4 @@ public class CancelledProducerConsumerLo return new Integer(s); } } - - }