Package org.apache.ignite.spi.systemview.view.datastructures

Class SemaphoreView

java.lang.Object

org.apache.ignite.spi.systemview.view.datastructures.SemaphoreView

public class SemaphoreView
extends Object

IgniteSemaphore representation for a SystemView.

See Also:

Ignite.semaphore(String, int, boolean, boolean)

Field Summary

Fields

Modifier and Type	Field	Description
protected T	ds	Data structure instance.

Constructor Summary

Constructors

Constructor	Description
SemaphoreView(org.apache.ignite.internal.processors.datastructures.GridCacheRemovable ds)

Method Summary

Modifier and Type	Method	Description
long	availablePermits()
boolean	broken()
boolean	failoverSafe()
int	groupId()
String	groupName()
boolean	hasQueuedThreads()
String	name()
int	queueLength()
boolean	removed()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ds

protected final T extends org.apache.ignite.internal.processors.datastructures.AtomicDataStructureProxy ds

Data structure instance.

Constructor Detail

SemaphoreView

public SemaphoreView(org.apache.ignite.internal.processors.datastructures.GridCacheRemovable ds)

Parameters:

ds - Data structure instance.

Method Detail

availablePermits

public long availablePermits()

Returns:

Number of permits available.

See Also:

IgniteSemaphore.availablePermits()

hasQueuedThreads

public boolean hasQueuedThreads()

Returns:

True if there may be other threads waiting to acquire the lock.

See Also:

IgniteSemaphore.hasQueuedThreads()

queueLength

public int queueLength()

Returns:

The estimated number of nodes waiting for this lock.

See Also:

IgniteSemaphore.getQueueLength()

failoverSafe

public boolean failoverSafe()

Returns:

True if this semaphore is failover safe.

See Also:

IgniteSemaphore.isFailoverSafe()

broken

public boolean broken()

Returns:

True if a node failed on this semaphore and failoverSafe() flag was set to false, false otherwise.

See Also:

IgniteSemaphore.isBroken()

name

public String name()

Returns:

Name.

groupName

public String groupName()

Returns:

Group name.

groupId

public int groupId()

Returns:

Group id.

removed

public boolean removed()

Returns:

True is data structure removed.