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

java.util.concurrent.Semaphore.release()
Releases a permit, returning it to the semaphore.
Releases a permit, increasing the number of available permits by one. If any threads are trying to acquire a permit, then one is selected and given the permit that was just released. That thread is (re)enabled for thread scheduling purposes.
There is no requirement that a thread that releases a permit must have acquired that permit by calling {@link #acquire}. Correct usage of a semaphore is established by programming convention in the application.

        epl.endpointAdded((EndpointDescription)EasyMock.anyObject(), (String)EasyMock.anyObject());
        EasyMock.expectLastCall().andAnswer(new IAnswer<Object>() {


            public Object answer() throws Throwable {
                System.out.println("Call made !!!");
                sema.release();
                return null;
            }
            
        }).once();

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        ImportReference iref = c.createMock(ImportReference.class);
        
        EasyMock.expect(rsa.importService(EasyMock.eq(epd))).andAnswer(new IAnswer<ImportRegistration>( ) {


            public ImportRegistration answer() throws Throwable {
                sema.release();
                return ireg;
            }
        }).once();
        EasyMock.expect(ireg.getImportReference()).andReturn(iref).anyTimes();
        EasyMock.expect(iref.getImportedEndpoint()).andReturn(epd).anyTimes();

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          while (true) {
            BlockReader blockReader = null;
            try {
              blockReader = BlockReaderTestUtil.
                  getBlockReader(cluster, lblock, 0, TEST_FILE_LEN);
              sem.release();
              try {
                blockReader.readAll(buf, 0, TEST_FILE_LEN);
              } finally {
                sem.acquireUninterruptibly();
              }

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              } finally {
                sem.acquireUninterruptibly();
              }
            } catch (ClosedByInterruptException e) {
              LOG.info("got the expected ClosedByInterruptException", e);
              sem.release();
              break;
            } finally {
              if (blockReader != null) blockReader.close();
            }
            LOG.info("read another " + TEST_FILE_LEN + " bytes.");

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            LOG.info("read another " + TEST_FILE_LEN + " bytes.");
          }
        } catch (Throwable t) {
          LOG.error("getBlockReader failure", t);
          testFailed.set(true);
          sem.release();
        }
      }
    };
    Thread thread = new Thread(readerRunnable);
    thread.start();

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    // While the thread is reading, send it interrupts.
    // These should trigger a ClosedChannelException.
    while (thread.isAlive()) {
      sem.acquireUninterruptibly();
      thread.interrupt();
      sem.release();
    }
    Assert.assertFalse(testFailed.get());


    // We should be able to read from the file without
    // getting a ClosedChannelException.

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                }
                catch (IllegalArgumentException iae) {
                    m_log.log(LogService.LOG_ERROR, "Error writing out contents of RepositoryAdminUser", iae);
                    exceptions[0] = iae;
                }
                semaphore.release();
            }
        }.start();
        m_repository.writeLocal(in);
        try {
            if (!semaphore.tryAcquire(30, TimeUnit.SECONDS)) {

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                    logger.log(Level.WARNING, "Unable to load avatar sample " +
                               "shader. High quality avatars are not available.",
                               ex);
                    out.value = false;
                } finally {
                    done.release();
                }
            }
        });


        try {

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                     ClientMessage message = consumer.receive(5000);


                     Assert.assertNotNull(message);


                     message.acknowledge();
                     semop.release();
                     if (i % 1000 == 0)
                     {
                        session.commit();
                     }
                  }

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      Semaphore creationSemaphore = socketCreationMap.get(key);
      if ( sipStack.isLoggingEnabled()) {
              sipStack.getStackLogger().logDebug("leaveIOCriticalSection : " + key);
          }
      if (creationSemaphore != null) {
        creationSemaphore.release();
      }
    }
  }

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