Package com.google.gerrit.server.git

Class WorkQueue.TaskParker.NoOp

java.lang.Object

com.google.gerrit.server.git.WorkQueue.TaskListener.NoOp

com.google.gerrit.server.git.WorkQueue.TaskParker.NoOp

All Implemented Interfaces:

WorkQueue.TaskListener, WorkQueue.TaskParker

Enclosing interface:

WorkQueue.TaskParker

public static class WorkQueue.TaskParker.NoOp
extends WorkQueue.TaskListener.NoOp
implements WorkQueue.TaskParker

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.gerrit.server.git.WorkQueue.TaskListener

WorkQueue.TaskListener.NoOp

Nested classes/interfaces inherited from interface com.google.gerrit.server.git.WorkQueue.TaskParker

WorkQueue.TaskParker.NoOp

Constructor Summary

Constructors

Constructor	Description
NoOp()

Method Summary

Modifier and Type	Method	Description
boolean	isReadyToStart(WorkQueue.Task<?> task)	Determine whether a WorkQueue.Task is ready to run or whether it should get parked.
void	onNotReadyToStart(WorkQueue.Task<?> task)	This method will be called after this WorkQueue.TaskParker returns true from WorkQueue.TaskParker.isReadyToStart(Task) and another WorkQueue.TaskParker returns false, thus preventing the start.

Methods inherited from class com.google.gerrit.server.git.WorkQueue.TaskListener.NoOp

onStart, onStop

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.gerrit.server.git.WorkQueue.TaskListener

onStart, onStop

Constructor Details

NoOp

public NoOp()

Method Details

isReadyToStart

public boolean isReadyToStart(WorkQueue.Task<?> task)

Description copied from interface: WorkQueue.TaskParker

Determine whether a WorkQueue.Task is ready to run or whether it should get parked.

Tasks that are not ready to run will get parked and will not run until all WorkQueue.TaskParkers return true from this method for the WorkQueue.Task. This method may be called more than once, but will always be followed by a call to WorkQueue.TaskParker.onNotReadyToStart(Task) before being called again.

Resources should be acquired in this method via non-blocking means to avoid delaying the executor from calling WorkQueue.TaskParker.onNotReadyToStart(Task) on other WorkQueue.TaskParkers holding resources.

Specified by:

isReadyToStart in interface WorkQueue.TaskParker

Parameters:

task - the WorkQueue.Task being considered for starting/parking

Returns:

a boolean indicating if the given WorkQueue.Task is ready to run (true) or should be parked (false)

onNotReadyToStart

public void onNotReadyToStart(WorkQueue.Task<?> task)

Description copied from interface: WorkQueue.TaskParker

This method will be called after this WorkQueue.TaskParker returns true from WorkQueue.TaskParker.isReadyToStart(Task) and another WorkQueue.TaskParker returns false, thus preventing the start.

Implementors should use this method to free any resources acquired in WorkQueue.TaskParker.isReadyToStart(Task) based on the expectation that the task would start. Those resources can be re-acquired when WorkQueue.TaskParker.isReadyToStart(Task) is called again later.

Specified by:

onNotReadyToStart in interface WorkQueue.TaskParker

Parameters:

task - the WorkQueue.Task that was prevented from starting by another WorkQueue.TaskParker