Package org.opendaylight.openflowplugin.applications.frsync.util

Class SemaphoreKeeperGuavaImpl<K>

java.lang.Object
org.opendaylight.openflowplugin.applications.frsync.util.SemaphoreKeeperGuavaImpl<K>
All Implemented Interfaces:
SemaphoreKeeper<K>
public class SemaphoreKeeperGuavaImpl<K> extends Object implements SemaphoreKeeper<K>

  • Constructor Details

    • SemaphoreKeeperGuavaImpl

      public SemaphoreKeeperGuavaImpl(int permits, boolean fair)

  • Method Details

    • summonGuard

      public Semaphore summonGuard(@NonNull K key)
      Description copied from interface: SemaphoreKeeper
      Create or load semaphore for key from cache.
      Specified by:
      summonGuard in interface SemaphoreKeeper<K>
      Parameters:
      key - semaphore identifier
      Returns:
      new or existing semaphore for given key, for one key there is always only one semaphore available

    • summonGuardAndAcquire

      public Semaphore summonGuardAndAcquire(@NonNull K key)
      Description copied from interface: SemaphoreKeeper
      Get guard and lock for key.
      Specified by:
      summonGuardAndAcquire in interface SemaphoreKeeper<K>
      Parameters:
      key - for which guard should be created and acquired
      Returns:
      semaphore guard

    • releaseGuard

      public void releaseGuard(@Nullable Semaphore guard)
      Description copied from interface: SemaphoreKeeper
      Unlock and release guard.
      Specified by:
      releaseGuard in interface SemaphoreKeeper<K>
      Parameters:
      guard - semaphore guard which should be released