@ManagedObject(value="A thread pool") public class QueuedThreadPool extends AbstractLifeCycle implements ThreadPool.SizedThreadPool, Dumpable
AbstractLifeCycle.AbstractLifeCycleListener
ThreadPool.SizedThreadPool
LifeCycle.Listener
FAILED, RUNNING, STARTED, STARTING, STOP_ON_FAILURE, STOPPED, STOPPING
Constructor and Description |
---|
QueuedThreadPool() |
QueuedThreadPool(int maxThreads) |
QueuedThreadPool(int maxThreads,
int minThreads) |
QueuedThreadPool(int maxThreads,
int minThreads,
int idleTimeout) |
QueuedThreadPool(int maxThreads,
int minThreads,
int idleTimeout,
java.util.concurrent.BlockingQueue<java.lang.Runnable> queue) |
QueuedThreadPool(int maxThreads,
int minThreads,
int idleTimeout,
java.util.concurrent.BlockingQueue<java.lang.Runnable> queue,
java.lang.ThreadGroup threadGroup) |
Modifier and Type | Method and Description |
---|---|
protected void |
doStart() |
protected void |
doStop() |
java.lang.String |
dump() |
void |
dump(java.lang.Appendable out,
java.lang.String indent) |
java.lang.String |
dumpThread(long id) |
void |
execute(java.lang.Runnable job) |
int |
getBusyThreads() |
int |
getIdleThreads() |
int |
getIdleTimeout()
Get the maximum thread idle time.
|
int |
getLowThreadsThreshold() |
int |
getMaxThreads()
Get the maximum number of threads.
|
int |
getMinThreads()
Get the minimum number of threads.
|
java.lang.String |
getName() |
protected java.util.concurrent.BlockingQueue<java.lang.Runnable> |
getQueue() |
int |
getQueueSize()
Get the size of the job queue.
|
int |
getThreads() |
int |
getThreadsPriority()
Get the priority of the pool threads.
|
boolean |
interruptThread(long id) |
boolean |
isDaemon() |
boolean |
isDetailedDump() |
boolean |
isLowOnThreads()
Returns whether this thread pool is low on threads.
|
void |
join()
Blocks until the thread pool is
stopped . |
protected java.lang.Thread |
newThread(java.lang.Runnable runnable) |
protected void |
runJob(java.lang.Runnable job)
Runs the given job in the
current thread . |
void |
setDaemon(boolean daemon)
Thread Pool should use Daemon Threading.
|
void |
setDetailedDump(boolean detailedDump) |
void |
setIdleTimeout(int idleTimeout)
Set the maximum thread idle time.
|
void |
setLowThreadsThreshold(int lowThreadsThreshold) |
void |
setMaxThreads(int maxThreads)
Set the maximum number of threads.
|
void |
setMinThreads(int minThreads)
Set the minimum number of threads.
|
void |
setName(java.lang.String name) |
void |
setQueue(java.util.concurrent.BlockingQueue<java.lang.Runnable> queue)
Deprecated.
pass the queue to the constructor instead
|
void |
setThreadsPriority(int priority)
Set the priority of the pool threads.
|
java.lang.String |
toString() |
addLifeCycleListener, getState, getState, getStopTimeout, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, setStopTimeout, start, stop
public QueuedThreadPool()
public QueuedThreadPool(@Name(value="maxThreads") int maxThreads, @Name(value="minThreads") int minThreads)
public QueuedThreadPool(@Name(value="maxThreads") int maxThreads, @Name(value="minThreads") int minThreads, @Name(value="idleTimeout") int idleTimeout)
public QueuedThreadPool(@Name(value="maxThreads") int maxThreads, @Name(value="minThreads") int minThreads, @Name(value="idleTimeout") int idleTimeout, @Name(value="queue") java.util.concurrent.BlockingQueue<java.lang.Runnable> queue)
public QueuedThreadPool(@Name(value="maxThreads") int maxThreads, @Name(value="minThreads") int minThreads, @Name(value="idleTimeout") int idleTimeout, @Name(value="queue") java.util.concurrent.BlockingQueue<java.lang.Runnable> queue, @Name(value="threadGroup") java.lang.ThreadGroup threadGroup)
protected void doStart() throws java.lang.Exception
doStart
in class AbstractLifeCycle
java.lang.Exception
protected void doStop() throws java.lang.Exception
doStop
in class AbstractLifeCycle
java.lang.Exception
public void setDaemon(boolean daemon)
daemon
- true to enable delegationThread.setDaemon(boolean)
public void setIdleTimeout(int idleTimeout)
idleTimeout
- Max idle time in ms.getIdleTimeout()
public void setMaxThreads(int maxThreads)
setMaxThreads
in interface ThreadPool.SizedThreadPool
maxThreads
- maximum number of threads.getMaxThreads()
public void setMinThreads(int minThreads)
setMinThreads
in interface ThreadPool.SizedThreadPool
minThreads
- minimum number of threadsgetMinThreads()
public void setName(java.lang.String name)
name
- Name of this thread pool to use when naming threads.public void setThreadsPriority(int priority)
priority
- the new thread priority.@ManagedAttribute(value="maximum time a thread may be idle in ms") public int getIdleTimeout()
setIdleTimeout(int)
@ManagedAttribute(value="maximum number of threads in the pool") public int getMaxThreads()
getMaxThreads
in interface ThreadPool.SizedThreadPool
setMaxThreads(int)
@ManagedAttribute(value="minimum number of threads in the pool") public int getMinThreads()
getMinThreads
in interface ThreadPool.SizedThreadPool
setMinThreads(int)
@ManagedAttribute(value="name of the thread pool") public java.lang.String getName()
@ManagedAttribute(value="priority of threads in the pool") public int getThreadsPriority()
@ManagedAttribute(value="size of the job queue") public int getQueueSize()
@ManagedAttribute(value="thread pool uses daemon threads") public boolean isDaemon()
Thread.setDaemon(boolean)
@ManagedAttribute(value="reports additional details in the dump") public boolean isDetailedDump()
public void setDetailedDump(boolean detailedDump)
@ManagedAttribute(value="threshold at which the pool is low on threads") public int getLowThreadsThreshold()
public void setLowThreadsThreshold(int lowThreadsThreshold)
public void execute(java.lang.Runnable job)
execute
in interface java.util.concurrent.Executor
public void join() throws java.lang.InterruptedException
stopped
.join
in interface ThreadPool
java.lang.InterruptedException
- if thread was interrupted@ManagedAttribute(value="number of threads in the pool") public int getThreads()
getThreads
in interface ThreadPool
@ManagedAttribute(value="number of idle threads in the pool") public int getIdleThreads()
getIdleThreads
in interface ThreadPool
@ManagedAttribute(value="number of busy threads in the pool") public int getBusyThreads()
@ManagedAttribute(value="thread pool is low on threads", readonly=true) public boolean isLowOnThreads()
Returns whether this thread pool is low on threads.
The current formula is:
maxThreads - threads + idleThreads - queueSize <= lowThreadsThreshold
isLowOnThreads
in interface ThreadPool
getLowThreadsThreshold()
protected java.lang.Thread newThread(java.lang.Runnable runnable)
@ManagedOperation(value="dumps thread pool state") public java.lang.String dump()
public void dump(java.lang.Appendable out, java.lang.String indent) throws java.io.IOException
public java.lang.String toString()
toString
in class java.lang.Object
protected void runJob(java.lang.Runnable job)
Runs the given job in the current thread
.
Subclasses may override to perform pre/post actions before/after the job is run.
job
- the job to runprotected java.util.concurrent.BlockingQueue<java.lang.Runnable> getQueue()
@Deprecated public void setQueue(java.util.concurrent.BlockingQueue<java.lang.Runnable> queue)
queue
- the job queue@ManagedOperation(value="interrupts a pool thread") public boolean interruptThread(@Name(value="id") long id)
id
- the thread ID to interrupt.@ManagedOperation(value="dumps a pool thread stack") public java.lang.String dumpThread(@Name(value="id") long id)
id
- the thread ID to interrupt.Copyright © 1995–2017 Webtide. All rights reserved.