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Java > Java SE, EE, ME > java > util > concurrent > Semaphore

java.util.concurrent
Class Semaphore

java.lang.Object
  extended by java.util.concurrent.Semaphore
All Implemented Interfaces:
Serializable
See Also:
Top Examples, release, acquire, tryAcquire, Lock, release(), acquire() 
public void acquire()
             throws InterruptedException
See Also:
Thread.interrupt(), release()
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public void acquire(int permits)
             throws InterruptedException
See Also:
Thread.interrupt(), IllegalArgumentException, release()
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public void acquireUninterruptibly()
See Also:
interrupted, release()
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public void acquireUninterruptibly(int permits)
See Also:
IllegalArgumentException, interrupted, release
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public int availablePermits()
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public int drainPermits()
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protected Collection<Thread> getQueuedThreads()
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public final int getQueueLength()
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public final boolean hasQueuedThreads()
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public boolean isFair()
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protected void reducePermits(int reduction)
See Also:
IllegalArgumentException
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public void release()
See Also:
acquire()
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public void release(int permits)
See Also:
IllegalArgumentException, acquire
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public Semaphore(int permits)
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public Semaphore(int permits,
                 boolean fair)
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public String toString()
See Also:
Object
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public boolean tryAcquire()
See Also:
tryAcquire(0, TimeUnit.SECONDS)
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public boolean tryAcquire(int permits)
See Also:
IllegalArgumentException, tryAcquire(permits, 0, TimeUnit.SECONDS)
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public boolean tryAcquire(int permits,
                          long timeout,
                          TimeUnit unit)
                   throws InterruptedException
See Also:
Thread.interrupt(), IllegalArgumentException, release()
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public boolean tryAcquire(long timeout,
                          TimeUnit unit)
                   throws InterruptedException
See Also:
Thread.interrupt(), release()
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