com.github.rholder.moar.concurrent.thread

Class BalancingThreadPoolExecutor

java.lang.Object

java.util.concurrent.AbstractExecutorService

com.github.rholder.moar.concurrent.thread.BalancingThreadPoolExecutor

All Implemented Interfaces:

java.util.concurrent.Executor, java.util.concurrent.ExecutorService

public class BalancingThreadPoolExecutor
extends java.util.concurrent.AbstractExecutorService

This is a rough implementation of an auto-balancing thread pool to optimize for the following condition: optimal pool size = N * U * (1 + (W/C)) where N is the number of CPU's, U is the desired utilization, W is the time each thread spends waiting, and C is the time each thread spends using the CPU.

Constructor Summary

Constructors

Constructor and Description
BalancingThreadPoolExecutor(java.util.concurrent.ThreadPoolExecutor threadPoolExecutor, ThreadProfiler threadProfiler, float targetUtilization, float smoothingWeight, int balanceAfter)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	awaitTermination(long timeout, java.util.concurrent.TimeUnit unit)
void	execute(java.lang.Runnable command)
boolean	isShutdown()
boolean	isTerminated()
void	shutdown()
java.util.List<java.lang.Runnable>	shutdownNow()

Methods inherited from class java.util.concurrent.AbstractExecutorService

invokeAll, invokeAll, invokeAny, invokeAny, newTaskFor, newTaskFor, submit, submit, submit

Methods inherited from class java.lang.Object

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

Constructor Detail

BalancingThreadPoolExecutor

public BalancingThreadPoolExecutor(java.util.concurrent.ThreadPoolExecutor threadPoolExecutor,
                           ThreadProfiler threadProfiler,
                           float targetUtilization,
                           float smoothingWeight,
                           int balanceAfter)

Method Detail

shutdown

public void shutdown()

shutdownNow

public java.util.List<java.lang.Runnable> shutdownNow()

isShutdown

public boolean isShutdown()

isTerminated

public boolean isTerminated()

awaitTermination

public boolean awaitTermination(long timeout,
                       java.util.concurrent.TimeUnit unit)
                         throws java.lang.InterruptedException

Throws:

java.lang.InterruptedException

execute

public void execute(java.lang.Runnable command)