org.ballerinalang.bre.bvm

Class InitWorkerResponseContext

java.lang.Object

org.ballerinalang.bre.bvm.InitWorkerResponseContext

All Implemented Interfaces:

WorkerResponseContext

public class InitWorkerResponseContext
extends Object
implements WorkerResponseContext

This is an implementation of a WorkerResponseContext which doesn't do anything.

Since:

0.965.0

Constructor Summary

Constructors

Constructor and Description
InitWorkerResponseContext(WorkerExecutionContext targetCtx)

Method Summary

Modifier and Type	Method and Description
WorkerDataChannel	getWorkerDataChannel(String name) Creates and returns the data channels used to communicate between the workers.
boolean	isErrored()
WorkerExecutionContext	joinTargetContextInfo(WorkerExecutionContext targetCtx, int[] retRegIndexes) Joins a new target worker execution context to the current response context.
WorkerExecutionContext	signal(WorkerSignal signal) This is called by the workers to signal the response context of any signal that needs to be passed into.

Methods inherited from class java.lang.Object

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

Constructor Detail

InitWorkerResponseContext

public InitWorkerResponseContext(WorkerExecutionContext targetCtx)

Method Detail

signal

public WorkerExecutionContext signal(WorkerSignal signal)

Description copied from interface: WorkerResponseContext

This is called by the workers to signal the response context of any signal that needs to be passed into. For example, a worker returning, or reporting an error upstream.

Specified by:

signal in interface WorkerResponseContext

Parameters:

signal - the signal to be passed in

Returns:

the worker execution context, if not null, that should be executed after returning from this call, this is used to re-use the same calling thread to execute the following worker execution

isErrored

public boolean isErrored()

joinTargetContextInfo

public WorkerExecutionContext joinTargetContextInfo(WorkerExecutionContext targetCtx,
                                                    int[] retRegIndexes)

Description copied from interface: WorkerResponseContext

Joins a new target worker execution context to the current response context. This will add a new interested party to the current response, which will be notified immediately if the response is already fulfilled, by returning a worker execution context to execute, which would be the calling context itself if there's no error (or else, after the error is resolved, the final executable worker execution context), or else, it will return null, and the caller should be notified later, by resuming the worker execution context later, when the response is fulfilled.

Specified by:

joinTargetContextInfo in interface WorkerResponseContext

Parameters:

targetCtx - the target worker execution context

retRegIndexes - the return registry locations of the target execution context where the current worker execution context should report to

Returns:

the worker execution context that should be executed after the join

getWorkerDataChannel

public WorkerDataChannel getWorkerDataChannel(String name)

Description copied from interface: WorkerResponseContext

Creates and returns the data channels used to communicate between the workers.

Specified by:

getWorkerDataChannel in interface WorkerResponseContext

Parameters:

name - the unique name of the data channel name requested

Returns:

the data channel