Examples of java.util.concurrent.Semaphore.acquire()

java.util.concurrent.Semaphore.acquire()
Acquires a permit from this semaphore, blocking until one is available, or the thread is {@linkplain Thread#interrupt interrupted}.
Acquires a permit, if one is available and returns immediately, reducing the number of available permits by one.
If no permit is available then the current thread becomes disabled for thread scheduling purposes and lies dormant until one of two things happens:
- Some other thread invokes the {@link #release} method for thissemaphore and the current thread is next to be assigned a permit; or
- Some other thread {@linkplain Thread#interrupt interrupts}the current thread.
If the current thread:
- has its interrupted status set on entry to this method; or
- is {@linkplain Thread#interrupt interrupted} while waitingfor a permit,
then {@link InterruptedException} is thrown and the current thread'sinterrupted status is cleared. @throws InterruptedException if the current thread is interrupted

        }


        LOG.info("Sample done.");
        sampleTimeDone.countDown();


        workerDone.acquire();
        if (workerError[0] != null) {
            throw workerError[0];
        }
    }
}

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      }
    });
    subscriberClient.subscribe("test");
    RedisClient.Pipeline publisherClient = new RedisClient("localhost", 6379).pipeline();
    for (int i = 0; i < CALLS * 10; i++) {
      semaphore.acquire();
      SettableFuture<Object> future = SettableFuture.create();
      futureRef.set(future);
      publisherClient.publish(test, hello);
    }
    semaphore.acquire(50);

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      semaphore.acquire();
      SettableFuture<Object> future = SettableFuture.create();
      futureRef.set(future);
      publisherClient.publish(test, hello);
    }
    semaphore.acquire(50);
    long end = System.currentTimeMillis();
    System.out.println("Pub/sub pipelined: " + (CALLS * 10 * 1000) / (end - start) + " calls per second");
  }


}

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              redisClient.execute(title, command);
              long commandend = System.nanoTime();
              int bin = (int) ((commandend - commandstart) / NANOS_PER_MILLI);
              bins.get(bin).incrementAndGet();
            } else {
              semaphore.acquire(1);
              ListenableFuture<? extends Reply> pipeline = redisClient.pipeline(title, command);
              pipeline.addListener(new Runnable() {
                @Override
                public void run() {
                  long commandend = System.nanoTime();

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                  semaphore.release();
                }
              }, es);
            }
          }
          semaphore.acquire(P);
          redisClient.close();
          return null;
        }
      });
    }

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    if (System.getenv().containsKey("CI") || System.getProperty("CI") != null) return;
    long start = System.currentTimeMillis();
    RedisClientBase client = connect("localhost", 6379).get();
    final Semaphore semaphore = new Semaphore(100);
    for (int i = 0; i < CALLS; i++) {
      semaphore.acquire();
      client.send(new Command("SET", Encoding.numToBytes(i), "value")).ensure(new Runnable() {
        @Override
        public void run() {
          semaphore.release();
        }

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        public void run() {
          semaphore.release();
        }
      });
    }
    semaphore.acquire(50);
    System.out.println("Netty4 pipelined: " + CALLS  * 1000 / (System.currentTimeMillis() - start));
  }
}

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                  semaphore.release();
                }
              };
              long start = System.currentTimeMillis();
              while (System.currentTimeMillis() - start < 5000) {
                semaphore.acquire();
                String current = String.valueOf(total.getAndIncrement());
                redisClient.set(current, current).ensure(release);
              }
              semaphore.acquire(100);
              done.countDown();

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              while (System.currentTimeMillis() - start < 5000) {
                semaphore.acquire();
                String current = String.valueOf(total.getAndIncrement());
                redisClient.set(current, current).ensure(release);
              }
              semaphore.acquire(100);
              done.countDown();
            } catch (InterruptedException e) {
              e.printStackTrace();
            }
          }

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                  semaphore.release();
                }
              };
              long start = System.currentTimeMillis();
              while (System.currentTimeMillis() - start < 5000) {
                semaphore.acquire();
                final String current = String.valueOf(total.getAndIncrement());
                redisClient.set(current, current).ensure(release).onSuccess(new Block<StatusReply>() {
                  @Override
                  public void apply(StatusReply statusReply) {
                    redisClient.get(current).onSuccess(new Block<BulkReply>() {

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