Package org.apache.tomcat.util.threads
Class TaskQueue
- java.lang.Object
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- java.util.AbstractCollection<E>
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- java.util.AbstractQueue<E>
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- java.util.concurrent.LinkedBlockingQueue<java.lang.Runnable>
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- org.apache.tomcat.util.threads.TaskQueue
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Iterable<java.lang.Runnable>
,java.util.Collection<java.lang.Runnable>
,java.util.concurrent.BlockingQueue<java.lang.Runnable>
,java.util.Queue<java.lang.Runnable>
public class TaskQueue extends java.util.concurrent.LinkedBlockingQueue<java.lang.Runnable>
As task queue specifically designed to run with a thread pool executor. The task queue is optimised to properly utilize threads within a thread pool executor. If you use a normal queue, the executor will spawn threads when there are idle threads and you wont be able to force items onto the queue itself.- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected static StringManager
sm
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
force(java.lang.Runnable o)
boolean
force(java.lang.Runnable o, long timeout, java.util.concurrent.TimeUnit unit)
boolean
offer(java.lang.Runnable o)
java.lang.Runnable
poll(long timeout, java.util.concurrent.TimeUnit unit)
int
remainingCapacity()
void
setForcedRemainingCapacity(java.lang.Integer forcedRemainingCapacity)
void
setParent(ThreadPoolExecutor tp)
java.lang.Runnable
take()
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Methods inherited from class java.util.concurrent.LinkedBlockingQueue
clear, contains, drainTo, drainTo, forEach, iterator, offer, peek, poll, put, remove, removeAll, removeIf, retainAll, size, spliterator, toArray, toArray, toString
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Field Detail
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sm
protected static final StringManager sm
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Method Detail
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setParent
public void setParent(ThreadPoolExecutor tp)
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force
public boolean force(java.lang.Runnable o)
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force
public boolean force(java.lang.Runnable o, long timeout, java.util.concurrent.TimeUnit unit) throws java.lang.InterruptedException
- Throws:
java.lang.InterruptedException
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offer
public boolean offer(java.lang.Runnable o)
- Specified by:
offer
in interfacejava.util.concurrent.BlockingQueue<java.lang.Runnable>
- Specified by:
offer
in interfacejava.util.Queue<java.lang.Runnable>
- Overrides:
offer
in classjava.util.concurrent.LinkedBlockingQueue<java.lang.Runnable>
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poll
public java.lang.Runnable poll(long timeout, java.util.concurrent.TimeUnit unit) throws java.lang.InterruptedException
- Specified by:
poll
in interfacejava.util.concurrent.BlockingQueue<java.lang.Runnable>
- Overrides:
poll
in classjava.util.concurrent.LinkedBlockingQueue<java.lang.Runnable>
- Throws:
java.lang.InterruptedException
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take
public java.lang.Runnable take() throws java.lang.InterruptedException
- Specified by:
take
in interfacejava.util.concurrent.BlockingQueue<java.lang.Runnable>
- Overrides:
take
in classjava.util.concurrent.LinkedBlockingQueue<java.lang.Runnable>
- Throws:
java.lang.InterruptedException
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remainingCapacity
public int remainingCapacity()
- Specified by:
remainingCapacity
in interfacejava.util.concurrent.BlockingQueue<java.lang.Runnable>
- Overrides:
remainingCapacity
in classjava.util.concurrent.LinkedBlockingQueue<java.lang.Runnable>
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setForcedRemainingCapacity
public void setForcedRemainingCapacity(java.lang.Integer forcedRemainingCapacity)
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