test/jdk/java/util/concurrent/tck/ConcurrentLinkedDequeTest.java

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

*** 938,948 ****
              } catch (NullPointerException success) {}
          }
      }
  
      void runAsync(Runnable r1, Runnable r2) {
!         boolean b = ThreadLocalRandom.current().nextBoolean();
          CompletableFuture<Void> f1 = CompletableFuture.runAsync(b ? r1 : r2);
          CompletableFuture<Void> f2 = CompletableFuture.runAsync(b ? r2 : r1);
          f1.join();
          f2.join();
      }
--- 938,948 ----
              } catch (NullPointerException success) {}
          }
      }
  
      void runAsync(Runnable r1, Runnable r2) {
!         boolean b = randomBoolean();
          CompletableFuture<Void> f1 = CompletableFuture.runAsync(b ? r1 : r2);
          CompletableFuture<Void> f2 = CompletableFuture.runAsync(b ? r2 : r1);
          f1.join();
          f2.join();
      }
*** 1001,1014 ****
  
              runAsync(getter, adder);
          }
      }
  
-     <T> T chooseRandomly(T... choices) {
-         return choices[ThreadLocalRandom.current().nextInt(choices.length)];
-     }
- 
      /**
       * Non-traversing Deque operations (that return null) are linearizable.
       * Don't return null when the deque is observably never empty.
       * https://bugs.openjdk.java.net/browse/JDK-8189387
       * ant -Djsr166.expensiveTests=true -Djsr166.tckTestClass=ConcurrentLinkedDequeTest -Djsr166.methodFilter=testBug8189387 tck
--- 1001,1010 ----