Package org.junit.platform.engine.support.hierarchical

Class ForkJoinPoolHierarchicalTestExecutorService

java.lang.Object

org.junit.platform.engine.support.hierarchical.ForkJoinPoolHierarchicalTestExecutorService

All Implemented Interfaces:

AutoCloseable, HierarchicalTestExecutorService

@API(status=EXPERIMENTAL,
     since="1.3")
public class ForkJoinPoolHierarchicalTestExecutorService
extends Object
implements HierarchicalTestExecutorService

A ForkJoinPool-based executor service that executes test tasks with the configured parallelism.

Since:

1.3

See Also:

• ForkJoinPool
• DefaultParallelExecutionConfigurationStrategy

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	ForkJoinPoolHierarchicalTestExecutorService.ExclusiveTask
(package private) static class	ForkJoinPoolHierarchicalTestExecutorService.WorkerThread
(package private) static class	ForkJoinPoolHierarchicalTestExecutorService.WorkerThreadFactory

Nested classes/interfaces inherited from interface org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutorService

HierarchicalTestExecutorService.TestTask

Field Summary

Fields

Modifier and Type	Field	Description
private final ForkJoinPool	forkJoinPool
private final int	parallelism

Constructor Summary

Constructors

Constructor	Description
ForkJoinPoolHierarchicalTestExecutorService(ConfigurationParameters configurationParameters)	Create a new ForkJoinPoolHierarchicalTestExecutorService based on the supplied ConfigurationParameters.
ForkJoinPoolHierarchicalTestExecutorService(ParallelExecutionConfiguration configuration)	Create a new ForkJoinPoolHierarchicalTestExecutorService based on the supplied ParallelExecutionConfiguration.

Method Summary

Modifier and Type	Method	Description
void	close()	Close this service and let it perform any required cleanup work.
private static ParallelExecutionConfiguration	createConfiguration(ConfigurationParameters configurationParameters)
private ForkJoinPool	createForkJoinPool(ParallelExecutionConfiguration configuration)
private void	executeNonConcurrentTasks(Deque<ForkJoinPoolHierarchicalTestExecutorService.ExclusiveTask> nonConcurrentTasks)
private void	forkConcurrentTasks(List<? extends HierarchicalTestExecutorService.TestTask> tasks, Deque<ForkJoinPoolHierarchicalTestExecutorService.ExclusiveTask> nonConcurrentTasks, Deque<ForkJoinPoolHierarchicalTestExecutorService.ExclusiveTask> concurrentTasksInReverseOrder)
void	invokeAll(List<? extends HierarchicalTestExecutorService.TestTask> tasks)	Invoke all supplied test tasks and block until their execution has finished.
private boolean	isAlreadyRunningInForkJoinPool()
private void	joinConcurrentTasksInReverseOrderToEnableWorkStealing(Deque<ForkJoinPoolHierarchicalTestExecutorService.ExclusiveTask> concurrentTasksInReverseOrder)
Future<Void>	submit(HierarchicalTestExecutorService.TestTask testTask)	Submit the supplied test task to be executed by this service.

Methods inherited from class java.lang.Object

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

Field Details

forkJoinPool

private final ForkJoinPool forkJoinPool

parallelism

private final int parallelism

Constructor Details

ForkJoinPoolHierarchicalTestExecutorService

public ForkJoinPoolHierarchicalTestExecutorService(ConfigurationParameters configurationParameters)

Create a new ForkJoinPoolHierarchicalTestExecutorService based on the supplied ConfigurationParameters.

See Also:

• DefaultParallelExecutionConfigurationStrategy

ForkJoinPoolHierarchicalTestExecutorService

@API(status=EXPERIMENTAL,
     since="1.7")
public ForkJoinPoolHierarchicalTestExecutorService(ParallelExecutionConfiguration configuration)

Create a new ForkJoinPoolHierarchicalTestExecutorService based on the supplied ParallelExecutionConfiguration.

Since:

1.7

Method Details

createConfiguration

private static ParallelExecutionConfiguration createConfiguration(ConfigurationParameters configurationParameters)

createForkJoinPool

private ForkJoinPool createForkJoinPool(ParallelExecutionConfiguration configuration)

submit

public Future<Void> submit(HierarchicalTestExecutorService.TestTask testTask)

Description copied from interface: HierarchicalTestExecutorService

Submit the supplied test task to be executed by this service.

Implementations may execute the task asynchronously as long as its execution mode is concurrent.

Implementations must generally acquire and release the task's resource lock before and after its execution unless they execute all tests in the same thread which upholds the same guarantees.

Specified by:

submit in interface HierarchicalTestExecutorService

Parameters:

testTask - the test task to be executed

Returns:

a future that the caller can use to wait for the task's execution to be finished

See Also:

• HierarchicalTestExecutorService.invokeAll(List)

isAlreadyRunningInForkJoinPool

private boolean isAlreadyRunningInForkJoinPool()

invokeAll

public void invokeAll(List<? extends HierarchicalTestExecutorService.TestTask> tasks)

Description copied from interface: HierarchicalTestExecutorService

Invoke all supplied test tasks and block until their execution has finished.

Implementations may execute one or multiple of the supplied tasks in parallel as long as their execution mode is concurrent.

Implementations must generally acquire and release each task's resource lock before and after its execution unless they execute all tests in the same thread which upholds the same guarantees.

Specified by:

invokeAll in interface HierarchicalTestExecutorService

Parameters:

tasks - the test tasks to be executed

See Also:

• HierarchicalTestExecutorService.submit(TestTask)

forkConcurrentTasks

private void forkConcurrentTasks(List<? extends HierarchicalTestExecutorService.TestTask> tasks,
 Deque<ForkJoinPoolHierarchicalTestExecutorService.ExclusiveTask> nonConcurrentTasks,
 Deque<ForkJoinPoolHierarchicalTestExecutorService.ExclusiveTask> concurrentTasksInReverseOrder)

executeNonConcurrentTasks

private void executeNonConcurrentTasks(Deque<ForkJoinPoolHierarchicalTestExecutorService.ExclusiveTask> nonConcurrentTasks)

joinConcurrentTasksInReverseOrderToEnableWorkStealing

private void joinConcurrentTasksInReverseOrderToEnableWorkStealing(Deque<ForkJoinPoolHierarchicalTestExecutorService.ExclusiveTask> concurrentTasksInReverseOrder)

close

public void close()

Description copied from interface: HierarchicalTestExecutorService

Close this service and let it perform any required cleanup work.

For example, thread-based implementations should usually close their thread pools in this method.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface HierarchicalTestExecutorService