com.vip.vjtools.vjkit.concurrent.threadpool

Class ThreadPoolBuilder.FixedThreadPoolBuilder

java.lang.Object

com.vip.vjtools.vjkit.concurrent.threadpool.ThreadPoolBuilder.FixedThreadPoolBuilder

Enclosing class:

ThreadPoolBuilder

public static class ThreadPoolBuilder.FixedThreadPoolBuilder
extends Object

创建FixedThreadPool.建议必须设置queueSize保证有界。 1. 任务提交时, 如果线程数还没达到poolSize即创建新线程并绑定任务(即poolSize次提交后线程总数必达到poolSize，不会重用之前的线程) poolSize默认为1，即singleThreadPool. 2. 第poolSize次任务提交后, 新增任务放入Queue中, Pool中的所有线程从Queue中take任务执行. Queue默认为无限长的LinkedBlockingQueue, 但建议设置queueSize换成有界的队列. 如果使用有界队列, 当队列满了之后,会调用RejectHandler进行处理, 默认为AbortPolicy，抛出RejectedExecutionException异常. 其他可选的Policy包括静默放弃当前任务(Discard)，放弃Queue里最老的任务(DisacardOldest)，或由主线程来直接执行(CallerRuns). 3. 因为线程全部为core线程，所以不会在空闲时回收.

Constructor Summary

Constructors

Constructor and Description
ThreadPoolBuilder.FixedThreadPoolBuilder()

Method Summary

Methods

Modifier and Type	Method and Description
ThreadPoolExecutor	build()
ThreadPoolBuilder.FixedThreadPoolBuilder	setDaemon(Boolean daemon) 与threadFactory互斥, 优先使用ThreadFactory 默认为NULL，不进行设置，使用JDK的默认值.
ThreadPoolBuilder.FixedThreadPoolBuilder	setPoolSize(int poolSize) Pool大小，默认为1，即singleThreadPool
ThreadPoolBuilder.FixedThreadPoolBuilder	setQueueSize(int queueSize) 不设置时默认为-1, 使用无限长的LinkedBlockingQueue.
ThreadPoolBuilder.FixedThreadPoolBuilder	setRejectHanlder(RejectedExecutionHandler rejectHandler)
ThreadPoolBuilder.FixedThreadPoolBuilder	setThreadFactory(ThreadFactory threadFactory) 与threadNamePrefix互斥, 优先使用ThreadFactory
ThreadPoolBuilder.FixedThreadPoolBuilder	setThreadNamePrefix(String threadNamePrefix) 与ThreadFactory互斥, 优先使用ThreadFactory

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadPoolBuilder.FixedThreadPoolBuilder

public ThreadPoolBuilder.FixedThreadPoolBuilder()

Method Detail

setPoolSize

public ThreadPoolBuilder.FixedThreadPoolBuilder setPoolSize(int poolSize)

Pool大小，默认为1，即singleThreadPool

setQueueSize

public ThreadPoolBuilder.FixedThreadPoolBuilder setQueueSize(int queueSize)

不设置时默认为-1, 使用无限长的LinkedBlockingQueue. 为正数时使用ArrayBlockingQueue.

setThreadFactory

public ThreadPoolBuilder.FixedThreadPoolBuilder setThreadFactory(ThreadFactory threadFactory)

与threadNamePrefix互斥, 优先使用ThreadFactory

setThreadNamePrefix

public ThreadPoolBuilder.FixedThreadPoolBuilder setThreadNamePrefix(String threadNamePrefix)

与ThreadFactory互斥, 优先使用ThreadFactory

setDaemon

public ThreadPoolBuilder.FixedThreadPoolBuilder setDaemon(Boolean daemon)

与threadFactory互斥, 优先使用ThreadFactory 默认为NULL，不进行设置，使用JDK的默认值.

setRejectHanlder

public ThreadPoolBuilder.FixedThreadPoolBuilder setRejectHanlder(RejectedExecutionHandler rejectHandler)

build

public ThreadPoolExecutor build()