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test/jdk/java/util/concurrent/FutureTask/CancelledFutureLoops.java

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8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
Reviewed-by: martin, alanb


 113                 if (!futures[i].cancel(true))
 114                     tooLate = true;
 115                 // Unbunch some of the cancels
 116                 if ( (i & 3) == 0)
 117                     Thread.sleep(1 + rnd.nextInt(5));
 118             }
 119 
 120             Object f0 = futures[0].get();
 121             if (!tooLate) {
 122                 for (int i = 1; i < nthreads; ++i) {
 123                     if (!futures[i].isDone() || !futures[i].isCancelled())
 124                         throw new Error("Only one thread should complete");
 125                 }
 126             }
 127             else
 128                 System.out.print("(cancelled too late) ");
 129 
 130             long endTime = System.nanoTime();
 131             long time = endTime - timer.startTime;
 132             if (print) {
 133                 double secs = (double)(time) / 1000000000.0;
 134                 System.out.println("\t " + secs + "s run time");
 135             }
 136 
 137         }
 138 
 139         public final Object call() throws Exception {
 140             barrier.await();
 141             int sum = v;
 142             int x = 0;
 143             int n = ITERS;
 144             while (n-- > 0) {
 145                 lock.lockInterruptibly();
 146                 try {
 147                     v = x = LoopHelpers.compute1(v);
 148                 }
 149                 finally {
 150                     lock.unlock();
 151                 }
 152                 sum += LoopHelpers.compute2(LoopHelpers.compute2(x));
 153             }


 113                 if (!futures[i].cancel(true))
 114                     tooLate = true;
 115                 // Unbunch some of the cancels
 116                 if ( (i & 3) == 0)
 117                     Thread.sleep(1 + rnd.nextInt(5));
 118             }
 119 
 120             Object f0 = futures[0].get();
 121             if (!tooLate) {
 122                 for (int i = 1; i < nthreads; ++i) {
 123                     if (!futures[i].isDone() || !futures[i].isCancelled())
 124                         throw new Error("Only one thread should complete");
 125                 }
 126             }
 127             else
 128                 System.out.print("(cancelled too late) ");
 129 
 130             long endTime = System.nanoTime();
 131             long time = endTime - timer.startTime;
 132             if (print) {
 133                 double secs = (double)time / 1000000000.0;
 134                 System.out.println("\t " + secs + "s run time");
 135             }
 136 
 137         }
 138 
 139         public final Object call() throws Exception {
 140             barrier.await();
 141             int sum = v;
 142             int x = 0;
 143             int n = ITERS;
 144             while (n-- > 0) {
 145                 lock.lockInterruptibly();
 146                 try {
 147                     v = x = LoopHelpers.compute1(v);
 148                 }
 149                 finally {
 150                     lock.unlock();
 151                 }
 152                 sum += LoopHelpers.compute2(LoopHelpers.compute2(x));
 153             }
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