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

java.util.concurrent.Semaphore.availablePermits()
Returns the current number of permits available in this semaphore.
This method is typically used for debugging and testing purposes. @return the number of permits available in this semaphore

            catch ( Exception ignore )
            {
                // ignore
            }


            Assert.assertTrue(semaphore.availablePermits() == 0);
            Assert.assertFalse(selector.hasLeadership());


            selector.requeue();
            Assert.assertTrue(timing.multiple(4).acquireSemaphore(semaphore));
        }

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            catch ( Exception ignore )
            {
                // ignore
            }


            Assert.assertTrue(semaphore.availablePermits() == 0);
            Assert.assertFalse(selector.hasLeadership());


            selector.requeue();
            Assert.assertTrue(timing.multiple(4).acquireSemaphore(semaphore));
        }

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                                try
                                {
                                    if ( isFirst.compareAndSet(true, false) )
                                    {
                                        semaphore.release(THREAD_QTY - 1);
                                        while ( semaphore.availablePermits() > 0 )
                                        {
                                            Thread.sleep(100);
                                        }
                                    }
                                    else

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                async.run();
            }
        });


        // drain checkpoint permits
        checkpoint.acquireUninterruptibly(checkpoint.availablePermits());
        // block NodeStore.retrieve()
        retrieve.acquireUninterruptibly();
        t.start();


        // wait until async update called checkpoint

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    @Test
    public void releasesPermit() throws Exception {
        final Semaphore semaphore = new Semaphore(1);
        assertThat("semaphore begins with single permit",
                semaphore.availablePermits(), is(1));
        semaphore.acquire(1);
        assertThat("semaphore has no available permits",
                semaphore.availablePermits(), is(0));
        new PermitReleasingCallback<>(semaphore).call(new Object());
        assertThat("callback releases a permit",

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        final Semaphore semaphore = new Semaphore(1);
        assertThat("semaphore begins with single permit",
                semaphore.availablePermits(), is(1));
        semaphore.acquire(1);
        assertThat("semaphore has no available permits",
                semaphore.availablePermits(), is(0));
        new PermitReleasingCallback<>(semaphore).call(new Object());
        assertThat("callback releases a permit",
                semaphore.availablePermits(), is(1));
    }
}

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        semaphore.acquire(1);
        assertThat("semaphore has no available permits",
                semaphore.availablePermits(), is(0));
        new PermitReleasingCallback<>(semaphore).call(new Object());
        assertThat("callback releases a permit",
                semaphore.availablePermits(), is(1));
    }
}

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    }


    // Wait until all puts are finished.
    if (!outstandingPutSemaphore.tryAcquire(_maxOutstandingWrites, _timeout, _timeoutUnit))
    {
      _log.error("Put timed out with {} outstanding writes", _maxOutstandingWrites - outstandingPutSemaphore.availablePermits());
      throw new TimeoutException();
    }


    FutureCallback<None> shutdownCallback = new FutureCallback<None>();
    _store.shutdown(shutdownCallback);

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                async.run();
            }
        });


        // drain checkpoint permits
        checkpoint.acquireUninterruptibly(checkpoint.availablePermits());
        // block NodeStore.retrieve()
        retrieve.acquireUninterruptibly();
        t.start();


        // wait until async update called checkpoint

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            server.stop();


            // test foreground retry
            client.checkExists().forPath("/hey");
            Assert.assertTrue(semaphore.tryAcquire(MAX_RETRIES, timing.forWaiting().seconds(), TimeUnit.SECONDS), "Remaining leases: " + semaphore.availablePermits());


            // make sure we're reconnected
            client.getZookeeperClient().setRetryPolicy(new RetryOneTime(100));
            client.checkExists().forPath("/hey");

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