public class CapacityManager extends Object
Constructor and Description |
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CapacityManager(int maxCapacity)
Creates a CapacityManager.
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Modifier and Type | Method and Description |
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boolean |
acquire()
Attempts to acquire a single capacity unit.
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boolean |
acquire(int capacity)
Attempts to acquire a given amount of capacity.
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int |
availableCapacity()
Returns the currently available capacity.
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int |
consumedCapacity()
Returns the currently consumed capacity.
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void |
release()
Releases a single unit of capacity back to the pool, making it available
to consumers.
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void |
release(int capacity)
Releases a given amount of capacity back to the pool, making it available
to consumers.
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public CapacityManager(int maxCapacity)
maxCapacity
- maximum capacity of this resource.
available capacity will initially be set to this value.
if a negative value is provided the capacity manager will operate in a no-op
passthrough mode in which all acquire calls will return true.public boolean acquire()
public boolean acquire(int capacity)
capacity
- capacity to acquireIllegalArgumentException
- if given capacity is negativepublic void release()
public void release(int capacity)
capacity
- capacity to releaseIllegalArgumentException
- if given capacity is negativepublic int consumedCapacity()
public int availableCapacity()
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