Interfaces

FrescoInstrumenter.Instrumenter

Classes

FrescoInstrumenter

Packages | Classes

public static interface

FrescoInstrumenter.Instrumenter

| com.facebook.imagepipeline.instrumentation.FrescoInstrumenter.Instrumenter |

Class Overview

Allows to capture unit of works across different threads.

Summary

Public Methods
abstract Runnable
Called when a unit of work is about to be scheduled.

abstract boolean
Allows to know in advance if the custom instrumenter desires to receive continuation updates.

abstract void
Reports a failure while executing work.

abstract Object
Called before scheduling a new unit work.

abstract Object
Captures the beginning of the continuation for stolen work.

abstract void
Captures the end of the continuation for stolen work.

Public Methods

public abstract Runnable decorateRunnable(Runnable runnable, String tag)

Called when a unit of work is about to be scheduled.

Parameters

Returns

the wrapped input runnable or just the input one.

public abstract boolean isTracing()

Allows to know in advance if the custom instrumenter desires to receive continuation updates. This can be used to avoid un-necessary work if the subscriber will not use the information provided.

Returns

true to specify interest in handling the updates, false otherwise.

public abstract void markFailure(Object token, Throwable th)

Reports a failure while executing work.

onEndWork(Object) still needs to be invoked.

Parameters

public abstract Object onBeforeSubmitWork(String tag)

Called before scheduling a new unit work.

Parameters

| tag | name. |

Returns

a token object that allows to track work units.

public abstract Object onBeginWork(Object token, String tag)

Captures the beginning of the continuation for stolen work.

Parameters

public abstract void onEndWork(Object token)

Captures the end of the continuation for stolen work.

Parameters

| token | returned by onBeginWork(Object, String). |

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