17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 */ 22 23 /* 24 * This file is available under and governed by the GNU General Public 25 * License version 2 only, as published by the Free Software Foundation. 26 * However, the following notice accompanied the original version of this 27 * file: 28 * 29 * Written by Doug Lea with assistance from members of JCP JSR-166 30 * Expert Group and released to the public domain, as explained at 31 * http://creativecommons.org/licenses/publicdomain 32 */ 33 34 /* 35 * @test 36 * @bug 4486658 37 * @compile CancelledLockLoops.java 38 * @run main/timeout=2800 CancelledLockLoops 39 * @summary tests lockInterruptibly. 40 * Checks for responsiveness of locks to interrupts. Runs under that 41 * assumption that ITERS_VALUE computations require more than TIMEOUT 42 * msecs to complete. 43 */ 44 45 import java.util.concurrent.*; 46 import java.util.concurrent.locks.*; 47 import java.util.*; 48 49 public final class CancelledLockLoops { 50 static final Random rng = new Random(); 51 static boolean print = false; 52 static final int ITERS = 1000000; 53 static final long TIMEOUT = 100; 54 55 public static void main(String[] args) throws Exception { 56 int maxThreads = 5; 57 if (args.length > 0) 58 maxThreads = Integer.parseInt(args[0]); 59 60 print = true; 61 62 for (int i = 2; i <= maxThreads; i += (i+1) >>> 1) { 63 System.out.print("Threads: " + i); 64 try { 65 new ReentrantLockLoop(i).test(); 66 } 67 catch(BrokenBarrierException bb) { 68 // OK, ignore 69 } 70 Thread.sleep(TIMEOUT); 71 } 72 } 73 74 static final class ReentrantLockLoop implements Runnable { 75 private int v = rng.nextInt(); 76 private int completed; 77 private volatile int result = 17; 78 private final ReentrantLock lock = new ReentrantLock(); 79 private final LoopHelpers.BarrierTimer timer = new LoopHelpers.BarrierTimer(); 80 private final CyclicBarrier barrier; 81 private final int nthreads; 82 ReentrantLockLoop(int nthreads) { 83 this.nthreads = nthreads; 84 barrier = new CyclicBarrier(nthreads+1, timer); 85 } 86 87 final void test() throws Exception { | 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 */ 22 23 /* 24 * This file is available under and governed by the GNU General Public 25 * License version 2 only, as published by the Free Software Foundation. 26 * However, the following notice accompanied the original version of this 27 * file: 28 * 29 * Written by Doug Lea with assistance from members of JCP JSR-166 30 * Expert Group and released to the public domain, as explained at 31 * http://creativecommons.org/licenses/publicdomain 32 */ 33 34 /* 35 * @test 36 * @bug 4486658 37 * @compile -source 1.5 CancelledLockLoops.java 38 * @run main/timeout=2800 CancelledLockLoops 39 * @summary tests lockInterruptibly. 40 * Checks for responsiveness of locks to interrupts. Runs under that 41 * assumption that ITERS_VALUE computations require more than TIMEOUT 42 * msecs to complete. 43 */ 44 45 import java.util.concurrent.*; 46 import java.util.concurrent.locks.*; 47 import java.util.*; 48 49 public final class CancelledLockLoops { 50 static final Random rng = new Random(); 51 static boolean print = false; 52 static final int ITERS = 1000000; 53 static final long TIMEOUT = 100; 54 55 public static void main(String[] args) throws Exception { 56 int maxThreads = 5; 57 if (args.length > 0) 58 maxThreads = Integer.parseInt(args[0]); 59 60 print = true; 61 62 for (int i = 2; i <= maxThreads; i += (i+1) >>> 1) { 63 System.out.print("Threads: " + i); 64 try { 65 new ReentrantLockLoop(i).test(); 66 } 67 catch (BrokenBarrierException bb) { 68 // OK, ignore 69 } 70 Thread.sleep(TIMEOUT); 71 } 72 } 73 74 static final class ReentrantLockLoop implements Runnable { 75 private int v = rng.nextInt(); 76 private int completed; 77 private volatile int result = 17; 78 private final ReentrantLock lock = new ReentrantLock(); 79 private final LoopHelpers.BarrierTimer timer = new LoopHelpers.BarrierTimer(); 80 private final CyclicBarrier barrier; 81 private final int nthreads; 82 ReentrantLockLoop(int nthreads) { 83 this.nthreads = nthreads; 84 barrier = new CyclicBarrier(nthreads+1, timer); 85 } 86 87 final void test() throws Exception { |