smile.util

Class MulticoreExecutor

java.lang.Object

smile.util.MulticoreExecutor

public class MulticoreExecutor
extends Object

Utility class to run tasks in a thread pool on multi-core systems.

Author:

Haifeng Li

Constructor Summary

Constructors

Constructor and Description
MulticoreExecutor()

Method Summary

Modifier and Type	Method and Description
static int	getThreadPoolSize() Returns the number of threads in the thread pool.
static <T> List<T>	run(Collection<? extends Callable<T>> tasks) Executes the given tasks serially or parallel depending on the number of cores of the system.
static void	shutdown() Shutdown the thread pool.

Methods inherited from class java.lang.Object

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

Constructor Detail

MulticoreExecutor

public MulticoreExecutor()

Method Detail

getThreadPoolSize

public static int getThreadPoolSize()

Returns the number of threads in the thread pool. 0 and 1 mean no thread pool.

Returns:

the number of threads in the thread pool

run

public static <T> List<T> run(Collection<? extends Callable<T>> tasks)
                       throws Exception

Executes the given tasks serially or parallel depending on the number of cores of the system. Returns a list of result objects of each task. The results of this method are undefined if the given collection is modified while this operation is in progress.

Parameters:

tasks - the collection of tasks.

Returns:

a list of result objects in the same sequential order as produced by the iterator for the given task list.

Throws:

Exception - if unable to compute a result.

shutdown

public static void shutdown()

Shutdown the thread pool.