Examples of java.util.concurrent.CyclicBarrier.await()

Class java.util.concurrent.CyclicBarrier

Examples of java.util.concurrent.CyclicBarrier.await()

java.util.concurrent.CyclicBarrier.await()
Waits until all {@linkplain #getParties parties} have invoked{@code await} on this barrier.
If the current thread is not the last to arrive then it is disabled for thread scheduling purposes and lies dormant until one of the following things happens:
- The last thread arrives; or
- Some other thread {@linkplain Thread#interrupt interrupts}the current thread; or
- Some other thread {@linkplain Thread#interrupt interrupts}one of the other waiting threads; or
- Some other thread times out while waiting for barrier; or
- Some other thread invokes {@link #reset} on this barrier.
If the current thread:
- has its interrupted status set on entry to this method; or
- is {@linkplain Thread#interrupt interrupted} while waiting
then {@link InterruptedException} is thrown and the current thread'sinterrupted status is cleared.
If the barrier is {@link #reset} while any thread is waiting,or if the barrier {@linkplain #isBroken is broken} when{@code await} is invoked, or while any thread is waiting, then{@link BrokenBarrierException} is thrown.
If any thread is {@linkplain Thread#interrupt interrupted} while waiting,then all other waiting threads will throw {@link BrokenBarrierException} and the barrier is placed in the brokenstate.
If the current thread is the last thread to arrive, and a non-null barrier action was supplied in the constructor, then the current thread runs the action before allowing the other threads to continue. If an exception occurs during the barrier action then that exception will be propagated in the current thread and the barrier is placed in the broken state. @return the arrival index of the current thread, where index{@code getParties() - 1} indicates the firstto arrive and zero indicates the last to arrive @throws InterruptedException if the current thread was interruptedwhile waiting @throws BrokenBarrierException if another thread wasinterrupted or timed out while the current thread was waiting, or the barrier was reset, or the barrier was broken when {@code await} was called, or the barrieraction (if present) failed due to an exception


         Future<Void> future = executorService.submit(new Callable<Void>(){
            @Override
            public Void call() throws Exception {
               try {
                  barrier.await();
                  log.tracef("Creating cache %s", name);
                  Cache<Object,Object> cache = cacheManager.getCache(name);
                  cache.put("a", "b");
                  return null;
               } catch (Throwable t) {

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               } catch (Throwable t) {
                  log.error("Got", t);
                  throw new RuntimeException(t);
               }  finally {
                  log.debug("Wait for all execution paths to finish");
                  barrier.await();
               }
            }
         });
         futures.add(future);
      }

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               }
            }
         });
         futures.add(future);
      }
      barrier.await(); // wait for all threads to be ready
      barrier.await(); // wait for all threads to finish


      log.debug("All threads finished, let's shutdown the executor and check whether any exceptions were reported");
      for (Future<Void> future : futures) future.get();
      executorService.shutdownNow();

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            }
         });
         futures.add(future);
      }
      barrier.await(); // wait for all threads to be ready
      barrier.await(); // wait for all threads to finish


      log.debug("All threads finished, let's shutdown the executor and check whether any exceptions were reported");
      for (Future<Void> future : futures) future.get();
      executorService.shutdownNow();
   }

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            return op.perform(cache0, key);
         }
      });


      // Wait for the entry to be wrapped on cache1
      beforeCommitCache1Barrier.await(10, TimeUnit.SECONDS);


      // Allow the state to be applied on cache1 (writing the old value for our entry)
      blockingRpcManager0.stopBlocking();


      // Wait for cache1 to finish applying the state, but don't allow the rebalance confirmation to be processed.

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      // Wait for cache1 to finish applying the state, but don't allow the rebalance confirmation to be processed.
      // (It would change the topology and it would trigger a retry for the command.)
      checkPoint.awaitStrict("pre_rebalance_confirmation_" + rebalanceTopologyId + "_from_" + address(1), 10, SECONDS);


      // Now allow the command to commit on cache1
      beforeCommitCache1Barrier.await(10, TimeUnit.SECONDS);


      // Wait for the command to finish and check that it didn't fail
      Object result = future.get(10, TimeUnit.SECONDS);
      assertEquals(op.getReturnValue(), result);
      log.tracef("%s operation is done", op);

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      // Wait for the value to be written on cache1
      afterCache1Barrier.await(10, TimeUnit.SECONDS);
      afterCache1Barrier.await(10, TimeUnit.SECONDS);


      // Allow the command to proceed on cache2
      beforeCache2Barrier.await(10, TimeUnit.SECONDS);
      beforeCache2Barrier.await(10, TimeUnit.SECONDS);


      // Check that the put command didn't fail
      Object result = future.get(10, TimeUnit.SECONDS);
      assertEquals(op.getReturnValue(), result);

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      afterCache1Barrier.await(10, TimeUnit.SECONDS);
      afterCache1Barrier.await(10, TimeUnit.SECONDS);


      // Allow the command to proceed on cache2
      beforeCache2Barrier.await(10, TimeUnit.SECONDS);
      beforeCache2Barrier.await(10, TimeUnit.SECONDS);


      // Check that the put command didn't fail
      Object result = future.get(10, TimeUnit.SECONDS);
      assertEquals(op.getReturnValue(), result);
      log.tracef("%s operation is done", op);

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               return conditional ? cache0.putIfAbsent(key, "v") : cache0.put(key, "v");
            }
         });


         // After the put command passed through EntryWrappingInterceptor, kill cache1
         distInterceptorBarrier.await(10, TimeUnit.SECONDS);
         cache1.stop();


         // Wait for the new topology to be installed and unblock the command
         TestingUtil.waitForRehashToComplete(cache0, cache2);
         distInterceptorBarrier.await(10, TimeUnit.SECONDS);

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         distInterceptorBarrier.await(10, TimeUnit.SECONDS);
         cache1.stop();


         // Wait for the new topology to be installed and unblock the command
         TestingUtil.waitForRehashToComplete(cache0, cache2);
         distInterceptorBarrier.await(10, TimeUnit.SECONDS);


         // StateTransferInterceptor retries the command, and it should block again in BlockingInterceptor.
         distInterceptorBarrier.await(10, TimeUnit.SECONDS);
         distInterceptorBarrier.await(10, TimeUnit.SECONDS);

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